Dr. Klaus Gerhard Puschmann
Dr. Klaus Gerhard Puschmann

Welcome to my personal homepage

*** Latest News  ***

 

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"Skylake-X/X299 - Live the Future now on macOS High Sierra 10.13 - [Successful Build/Extended Guide]" represents my new macOS 10.13 High Sierra Desktop Guide for Skylake-X/X299 now available on Tonymacx86:

https://www.tonymacx86.com/threads/skylake-x-x299-live-the-future-now-on-macos-high-sierra-10-13-successful-build-extended-guide.229353/ .

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"Skylake-X/X299 - Live the Future now on macOS Sierra 10.12 - [Successful Build/Extended Guide]" represents my new macOS 10.12 Sierra Desktop Guide for Skylake-X/X299 now available on Tonymacx86:

https://www.tonymacx86.com/threads/skylake-x-x299-live-the-future-now-on-macos-sierra-10-12-successful-build-extended-guide.229354/ .

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Conscious distraction of scientific progress and technical innovations in German Solar Physics?

 

Klaus Gerhard Puschmann on LinkedIn:

 

https://www.linkedin.com/pulse/conscious-distraction-scientific-progress-technical-german-puschmann

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iSPOR-S - The Perfect Customac Pro - macOS High Sierra 10.13 on X99 - Full Success

 

This X99 macOS High Sierra 10.13 desktop guide is the logical continuation of my successful macOS Sierra 10.12 guide and build: The Perfect Customac-Pro: X99-A II, i7-6950X, 128GB G.Skill TridentZ, Aorus GTX TI Xtreme (hereafter, Sierra Guide). At the same time, it will be my last guide based on X99 Systems, with X299 and Skylake-X ante portas. Due to the early beta stage of macOS High Sierra 10.13 (PB2), this guide might still marginally grow with time all along upcoming public beta releases. However, it is really amazing that apart from lacking yet to be released Nvidida 10.13 Webdrivers, my X99 system already works like a charm and behaves absolutely flawless and stable, like in case of a final release without any remaining issues yet to be solved.

 

https://www.tonymacx86.com/threads/the-perfect-customac-pro-macos-high-sierra-10-13-on-x99-full-success.227001/#post-1542680

 

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Scandal in Solar Physics - yet another disgusting effrontery by Dr. Rohan Eugene Louis, former junior post-doc at the Leibniz Institute for Astrophysics Potsdam (AIP).  

 

See https://www.linkedin.com/pulse/scandal-solar-physics-yet-another-disgusting-puschmann?published=t

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The polarization signature of photospheric magnetic fields in 3D MHD simulations and observations at disk center

 

C. Beck, D. Fabbian, R. Rezaei, K.G. Puschmann

 

The Astrophysical Journal, in press

 

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Scandal in German Solar Physics:

 

Another fraud comitted by the AIP Potsdam Dalton Brothers

 

Klaus Gerhard Puschmann on LinkedIn

 

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In memorial of Dr. Joachim Staiger

 

This morning I received the sad notification about the sudden demise of my estimated friend, colleague and mentor, Dr. Joachim Staiger (Kiepenheuer Institute of Solar Physics, Freiburg, Germany). Joachim was on the way to the Teide Observatory (OT) on Tenerife, when he suffered a heart attack in the train to Stuttgart airport. All subsequently committed efforts to save his life remained without success.

Farewell, Joe! It is a big loss for all of us, not only scientifically but especially from the human side. I hope that HELLRIDE on earth literally pathed your way straightaway to heaven.

 

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Apparently, the massive collective scientific bullying, intellectual robbery, malpractice, abuse, nepotism, misappropriation and corruption executed by specific German Solar Physics Institutions, their top-management and involved scientists seems to reach another peak by now.

 

In two weeks from now (14. January 2017) I will be homeless, left without anything. Many thanks to everybody making this happen! It is simply a personal nightmare and tragedy of infinite dimension!

 

In any case, I prefer being in this situation than being part of that corrupt mafia, which fully intentionally caused this terrible situation. Let's hope that justice will win one day. I will never loose hope and I will continue fighting. If there is any justice left on this planet I might be vindicated one day. It is really a nightmare to be hampered and blocked day by day by a mediocre lobby, which is afraid of the light and fully intentionally destroys my life in consequence.

 

Klaus Gerhard Puschmann on LinkedIn

 

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Against Injustice and Corruption in German Solar Physics -- Petition submitted to Dr. Angela Merkel (German Federal Chancellor), Dr. Johanna Wanka (German Federal Minister of Education and Science), Dr. Alexander Van der Bellen (Federal President-elect of Austria), Mr. Christian Kern (Federal Chancellor of Austria), Mr. Sebastian Kurz (Foreign Minister of Austria) and Dr. Reinhold Mitterlehner (Austrian Federal Minister of Science, Research and Economy).

 

Please say NO to injustice and corruption in German Solar Physics, Science and Research and please support and sign my change.org-petition. Your support will be more than appreciated and kept anonymous to outside unless you determine otherwise .

 

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Seeking for new job opportunities in 2017

 

My support to the Space Situational Awareness (SSA) Preparatory Programme Office - Space Weather and NEO Segment - OPS-L, ESA/ESOC in function of a Senior Optical Engineer surprisingly finished by the end  2016.

 

In consequence, I am seeking now for new job-opportunities in Business Sectors: Aerospace, Space Weather, Solar Physics, Science & Research, Optical Telescope and Post-Focus Instrumentation Development, Space Mission and Optical Payload Development, Optical Space Link/Communication Development, etc..

 

In particular, I am looking for a project manager or project/system/telescope/instrument scientist position in Aerospace or Science and Research with emphasis on Solar Physics, Space Weather or Near Earth Object (NEO) detection. 

 

Curriculum Vitae: https://www.klaus-gerhard-puschmann.de/curriculum-vitae/

Selected Publications: https://www.klaus-gerhard-puschmann.de/selected-publications/

Contact per E-Mail: kgp@live.de

 

Any positive feedback is highly appreciated.

 

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Introduction

This webpage replaces my former personal homepage at the Leibniz-Institut für Astrophysik Potsdam (AIP) which has been deleted by the AIP without any communication or advice after the institute did not extent my working contract surprisingly either on the last day of my former employment (28 February 2014) against all earlier commitments and inhibited my access to the institute and to my partly even personal data and codes that I created in a period of 13 years at different international institutions.

 

All promises of the respective group leader ("King" of the Einstein Tower - by the way, a telescope that his majesty promotes as the predecessor of next generation telescopes like GREGOR or EST, although the Einstein Tower soon will be celebrating its centennial..) over several years for providing me with a permanent position were nothing but smoke and mirrors. After offering me over several months at least a further temporal contract based on a third-party fond (SOLARNET), he revoked the offer on the last day of my former contract, on 28 February 2014. My temporary contract has been given subsequently to his young female and former PHD-student, apparently not having any comparable experience or qualification in the field of research or instrumentation. The members of the Optical Solar Physics Group of the AIP, the entourage of the king, simply kept their traps shut. 

 

Finally, in  the frame of a legal proceeding, the institute officially justified my marginal expulsion with the fact, that I apparently touched the GERMAN limit of 12 years for being employed as a Postdoc, although the further offered temporal contract based on a third-party fond would not have affected this marginal law at all, which is in any case of disadvantage for any employee. In their calculations, they considered the years when performing my thesis abroad from Germany (Austria, Spain), but at the same time they ignored the years of my post-doctoral employment in Spain over nearly four years. Therefore, instead of actually nearly 16 years of postdoctoral employment, they considered only 11 years, 11 months and a couple of days. A number certainly below the 12 year limit and therefore apparently adequate to justify my expulsion at latest possible occasion. In the last court hearing on 16 April 2015, in second instance, and after a juridical fight of more than one year, the respective judge in charge agreed on the revision of the respective law by the National Supreme Court of Germany. In consequence, the AIP offered me a gross commutation payment of 15.000 Euros for the case that I would agree in a court settlement. I finally accepted, to finance my further juridical fight and to minimize the financial risk and expenses. However, it required an enforceable copy of the court-settlement and an ultimate penalty of the execution of the account attachment of the AIP, to finally receive the commutation payment by the institute on 13 May 2015, with a total delay of 20 days!

 

Already in March 2014, we requested an Employment Reference Letter from the institute. It's first officially issued version was however meaningless, harmful and extremely deviating from reality, embezzling all my significant contributions, innovations, achievements and results with respect to the GREGOR Fabry-Perot Interferometer and the BLue Imaging Solar Spectrometer for the 1.5m GREGOR Solar Telescope, as well as their significance and relevance. Within nearly 10 months and again under huge private expenses for lawyers, a new version was negotiated with the help of the corresponding judge until 20 January 2015. The institute refused also to exhibit an international version of this Employment Reference Letter in English and attempted to achieve a prohibition of its distribution on my personal web page or in social media. Not even until 30 January 2015 the institute exhibited an official and signed version of the final Employment Reference Letter, very likely to get home its scientific evaluation that took place these days. Therefore, we finally asked the court to issue an enforceable copy of the court-settlement that we received on 3 February 2015. The final Employment Reference Letter dating back to the 28 February 2014 has been finally delivered by the AIP on 17 February 2015, with a total delay of nearly one year! For details see Section Employement Reference Letters on my homepage and my related post on LinkedIn.

 

Within an another tremendous legal proceeding of several months and huge private expenses for lawyers, II finally received also some copies of the above-mentioned data and codes. Unfortunately, part of these data and codes is still kept exclusively by the AIP. The institute obviously and seriously proposed to sign an agreement for a bilateral renunciation of the use of my observational data for scientific publications. On 16 April 2015, the institute promised another handover of unspecified observational data and codes but announced at the same time that part of my data and codes shall be even deleted if possible. I tried to prevent the worst case by means of another legal proceeding. I lost and in consequence the institute denied any handover of my data and codes at all! Really amazing, given the fact that I requested these data and codes already in spring 2014 and that the data material is exclusive and extremely costive. The expected observational results would have been another possibility to clearly demonstrate the excellent and complete performance and function of the GREGOR Fabry-Perot Interferometer (GFPI) by already 2013, including all technical innovations that I implemented as the Instrument Scientist of the GFPI and the BLue Imaging Solar Spectrometer (BLISS) between 2011 and 2013. The GFPI is a post-focus instrument for one of the largest solar telescopes worldwide (the 1.5m GREGOR Solar Telescope) that I developed at the Institut für Astrophysik of the Georg-August-University Göttingen (Germany) between 2004 and 2007, in collaboration with the local group leader. Ironically, the Optical Solar Physics Group of the AIP and its group leader have not been able to achieve any own significant observational or scientific results with the instrument so far, which results in a tremendous waste of public money (3 million Euros for the instrument, 20 Million Euros for the telescope) to the personal advantage of the respective group leader and in favor of his personal political ambitions. Apparently, in line with this aim, I also have been even dropped in 2014 from a set-list of authors for first science publications related to GREGOR and its Post-focus instrumentation. A set-list that had been fixed already during a GREGOR-meeting in Freiburg by the end of 2011 and that included so far only people with important contributions to the telescope and its post-focus instrumentation over many years. In contrary, I have been subsequently advised by the AIP to consider this set-list of authors in my future scientific publications. By the end of 2014, the AIP claimed that my drop has been be based on a common decision of the GREGOR consortium. Subsequently, it repeatedly refused any further statement, justification or disclose until today. The GREGOR consortium however states, that it just followed the author set-list suggestions imposed by the AIP in 2014, which in my opinion is simply ridiculous and lacks any base.

 

Until today I suffer on the apparently collective bullying and even partly intellectual robbery executed by the respective group leader and the top management of the Leibniz Institut für Astrophysik (Potsdam). Unfortunately and in addition, there is an apparent stone wall of silence from the GREGOR consortium and the national and international solar physics community for nearly three years. Involved institutions, certain members of their top managements and a frequent number of national and international scientists seem to directly support the marginal and reprehensible acts of the respective group leader and the top-management of the Leibniz Institut für Astrophysik Potsdam (AIP). Over the recent months, all former and all subsequent issues have been addressed in detail to the Ombudsman of Science (Bonn) and the Investigation Committee of the Wilhelm Gottfried Leibniz-Association. However, both constitutions seem to be either biased or to lack the required authorization or competence for imposing adequate solutions, which finally rather resulted in a procrastination of the individual issues than in the desired solution.

 

Moreover, between March 2016 and November 2016, a series of GREGOR First-Science publications with a prominent set-list of authors, including several highly ranked scientists, post-docs and students from different national and international scientific institutions without, without major or without comparable contributions to the project, popped up on the arXiv pre-print server, revealing in addition a  post-focus instrument and telescope citation strategy totally off the charts. The same states to a large extent also for the scientific content and output as well as for the quality of the presented observational results. For several months until today, all my claims and requests remained without answer and have been simply ignored by the addressed institutions, constitutions and respective scientists but also by the Ombudsman of Science in Bonn, the Investigation Board of the Gottfried Wilhelm Leibniz Association and the respective Scientific Journals. Very recently, all related articles even have been officially published in Astronomische Nachrichten (AN) and Astronomy & Astrophysics (A&A), although I repeatedly requested the stop of the publishing process of the publications until a satisfying solution can be reached. This likely makes any ethics in Solar Physics more than highly questionable. In January 2017, even another marginal publication added to the series of GREGOR First-Science publications,  again with a post-focus instrument and telescope citation strategy totally off the charts. Also this articel is affected by the dubious author-list containing scientists without, without major or without comparable contributions to the project (see my related post on LinkedIn). However, the top of effrontery, fraud, intellectual robbery and appropriation of my former achievements, implementations hower has been reached within another publication of the Potsdam Dalton Brothers in January 2017, announcing a supposedly new data pipeline (sTools) for the GREGOR Fabry-Perót Interferometer, which however represents nothing else  than a dirty copy of iSPOR-DP. A fact that is not mentioned at all. Within this publiction, the Potsdam Dalton Brothers also illegally annect the Blue Imaging Channel (BIC) of the instrument in form of a supposedly "new" instrument called HIFI. Missing references and a citation strategy once more totally off the charts migth no have to be mentioned in addition but however illigally ascribe the BIC/HIFI as thier implementation and property  (See my related LinedIn post for further details). Also this publication is part of a long-lasting and massive collective scientific bullying executed against my person! I have to express my deepest protest against any science performed and published in this way! It is not only a disgrace for German Solar Physics but also for Solar Physics in general!

 

In fact, much more information about the apparent collective bullying and the misappropriation of my contributions, achievements and results related to the GREGOR Fabry-Perot Interferometer (GFPI) and the BLue Imaging Solar Spectrometer (BLISS)  can be found on LinkedIn, where I express my personal opinion in several posts (see Section LinkedIn Posts). Here, after distributing a step wise growing introduction during the recent months, I want to restrict myself to basic scientific facts.

 

 I regret, that my related personal work and corresponding personal projects are strongly hampered by the above mentioned unpleasant circumstances. Morever I had to perform any related work exclusively in private.  Apart from already published material, this current webpage provides further details on technical innovations and achievements related to the GREGOR Fabry-Perot Interferometer and the BLue Imaging Solar Spectrometer, which I implemented or achieved as the Instrument Scientist. Some latest scientific results presented here have been achieved after the private purchase of the required computing hardware by the end of 2014. iSPOR-S, the Imaging Spectropolarimetric Parallel Organized Reconstruction Server is perfectly suited to perform all required computational tasks for data reduction, image reconstruction, spectral deconvolution and data analysis within a reasonable computational time, which is based on my proper GFPI Data Pipeline iSPOR-DP, the Imaging Spectropolarimetric Parallel Organized Reconstruction Data Pipeline.

 

 

 

Imaging Spectropolarimteric Parallel Organized Reconstruction Server iSPOR-S

 

Mainboard: Asus X99-A II

CPU: Intel I7-6950X (10core)

RAM: Crucial Ballistix Sport LT 128GB

Graphics: Gigabyte GeForce GTX 980 TI

SSD: Samsung 840 EVO 1TB

Raid: 3x WD RED 6TB (18TB)

Power Supply: Corsair

Monitor: Asus MX299

 

Operating System: MacOS Sierra 10.12.2

Imaging Spectropolarimetric Parallel Organized Reconstruction Data Pipeline iSPOR-DP

 

I sincerely hope that you will enjoy this personal webpage as a short resume of all the individual contributions, collaborations and projects I carried out so far or I was responsible for.

 

Every month it is simply amazing to see the frequent number of visitors of my personal homepage from all over the world. The figure below reflects both number and location of visitors registered by Google Analytics just for the period 20 January to 19 February 2016.  Thank you so much for all your extremely appreciated interest!

 

Before briefly summarizing my interests and skills below, I would like to hightlight here one of my recent observational discoveries. 

 

*** Sensationell Observational Discovery ***

Spicules and their on-disk counterparts - the main driver of solar chromospheric heating

The GREGOR Fabry-Perot Interferometer @VTT - Sensational Observational Discovery - Spicules, the main driver of solar chromospheric heating - 27 February 2016 - Klaus Gerhard Puschmann - Darmstadt, Germany - @copyright

Click the image above to see the sensational and outstanding movie and the important observational discovery achieved with the GREGOR Fabry-Pérot Interferometer, confirming Spicules as the main driver for the chromospheric heating of our Sun and sun-like stars, with an expected mass flux about 100 times that of the solar wind. A key question in Solar Physics that remained without an appropriate answer for centuries. Published by Klaus Puschmann on SCIENCE-MEDIA.ORG - 27 February 2016

 

 

For durther details follow this LINK but also see the recently published article (02/2016) cited below:

 

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Spicules and their on-disk counterparts - the main driver of solar chromospheric heating?

 

Klaus Gerhard Puschmann

 

2016arXiv160205185P

 

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Last technical innovations and observational results related to the GREGOR Fabry-Pérot Interferometer at the 1.5m GREGOR Solar Telescope that I achieved in 2013 have been summarized by myself within the recently published article (02/2016) cited below:

 

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The GREGOR Fabry Perot Interferometer (GFPI) - Technical Innovations and Results achieved in 2013

 

Klaus Gerhard Puschmann

 

2016arXiv160205783P

 

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Klaus Gerhard Puschmann - Interests and Skills:

Member of the SSA Preparatory Programme Office - OPS-L - ESA/ESOC - Space Weather Segment and NEO Segment [2014 - 2016]

Primary Focus: Development of the ESA L1 and L5 Lagrange Space Weather Missions which will consist of (1) a spectropolarimetric Fabry-Perot Imaging-Magnetograph and (2) an EUV Imager for Flare and CME now- and forecast, (3) a Coronagraph for the tracking of Coronal Mass Ejections (CMEs) and (4) a Heliospheric Imager for CME arrival time prediction and insitu-measurement payload. (5) A NEO imager for the observation and orbit characterization of inner earth-orbit objects is currently considered as optional remote sensing payload. Most of the suggested instruments will take their heritage from pervious missions like SOHO, STEREO or upcoming missions such as Solar Orbiter, but are expected to be optimised for enhanced operational space weather monitoring and forecast purposes with very high reliability and robustness demands, due to the need to operate particularly during severe space weather events. For details see S.Kraft, K.G. Puschmann, J.P. Luntama, ICSO, 2016



Secondary Focus on the 1m Near Earth Object flye-eye TELescope (NEOSTEL) development.The goal of the NEOSTEL project is to create a ground based network of telescopes for Near Earth Objects observation in the frame of the ESA Space Situational Awareness Programme.

 

Additional Contributions to the Development of ground-based Optical Telescopes (4-12m aperture class) for optical Space Link Communication.

 

See the Employment Reference Letter of the Director of Human Resources & Recruitment, RHEA Group/RHEA Systems for European Space Agency as well as the  personal reference letters of the Head of the Multidisciplinary Projects Unit and the Space Weather Space Segment Engineer of the Space Situational Awareness Office in the ESA Directorate of Operations, provided in Section "Employment Reference Letters".

 

 

Member - 1.5m Solar Telescope Project GREGOR [2003-2014] 

 

The 1.5m GREGOR solar telescope is Europe’s largest solar telescope and on third position worldwide.  GREGOR is designed as a Gregory system with three imaging mirrors. It posses an alt-azimuthal mounting and is protected by retractable dome. The telescope is built and operated at the Spanish Observatorium del Teide (OT) on Tenerife by a consortium of several German scientific institutions and their international partners. Its first light instrumentation includes the GREGOR Fabry-Perot Interferometer (GFPI), the GRating Infrared Spectro-polarimeter (GRIS) and the Broad-Band Imager (BBI). Its high-order adaptive optics system (GAOS) allows for diffraction-limited observations of the highly dynamic solar fine-structure and its related magnetic field at spatial scales down to 60 km on the solar surface. The impressive spatial resolution of the acquired images, spectra and magnetogramms will allow for the first time a direct comparison of the results with numerical simulations at smallest scales. As the Instrument Scientist of the GREGOR Fabry-Perot Interferometer and the BLue Imaging Solar Spectrometer my focus in the frame of the 1.5m GREGOR Solar Telescope Project was the development, deployment, verification and operation of the latter two instruments. 

Image under @copyright of Klaus Gerhard Puschmann - Click to enlarge the image
Image under @copyright of Klaus Gerhard Puschmann - Click to enlarge the image

Instrumental Development GREGOR Fabry-Perot Interferometer & Blue Imaging Solar Spectrometer [2004-2014] - Instrument Scientist

The GREGOR Fabry-Perot Interferometer (GFPI), an imaging spectropolarimeter,  is one of three first-light instruments of the German 1.5-meter GREGOR solar telescope at the Observatorio del Teide, Tenerife, Spain. The instrument has been developed at the Institut für Astrophysik Göttingen between 2004 and 2007, in collaboration between the respective solar physics group leader and myself, and further developed, commissioned, scientifically verified and finalized by myself in Potsdam. With two tunable etalons in its Narrow-Band Channel (NBC) in a collimated mount and large-format, high-cadence CCD detectors with sophisticated computer hard- and software, the instrument is capable of spectral line scanning in less than a minute.  The field-of-view (FOV) of 50’’ × 38’’ (25’’ x 38’’ in vector spectropolarimetric mode) in both NBC and Broad-Band Channel (BBC) is well suited for sunspot observations. The spectral coverage in the spectroscopic mode extends from 530-860 nm (580-660 nm in vector spectropolarimetric mode) with a theoretical spectral resolution of R ≈ 250,000. The combination of fast spectropolarimetric narrow-band imaging  and post-factum image restoration has the potential for discovery science concerning the dynamic solar photospheric and chromospheric fine structure and its magnetic field at spatial scales down to 60 km on the solar surface. Within an innovative and novel Multi-wavelength Imaging Setup (MWIS) in the BBC and the Blue Imaging Channel (BIC),  Halpha-Lyot/G-Band/Ca II K-Lyot Filters can gather now photospheric and chromospheric information concerning solar small scale structures and their dynamics simultaneously to the spectroscopic and spectropolarimetric data recorded in the NBC of the instrument. The Blue Imaging Solar Spectrometer (BLISS) will be a twin of the GFPI and will provide narrow-band Spectral Line Scanning and Broadband Imaging in the wavelength range 380-530 nm. It will replace the BIC of the GFPI in the near future. I completed the design for this instrument  in 2013.

Image under @copyright of Klaus Gerhard Puschmann - Click to enlarge

The GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR solar telescope. The instrument is mounted in the 5th floor of the 1.5m GREGOR solar telescope building on five optical benches. The image shows part of the spectropolarimetric Narrow-Band Channel (NBC, 530-860 nm) and the Laser-Photomultiplier Channel for Etalon-Finesse adjustment. In the background one finds the BroadBand Channel (BBC, 530-860 nm), the Wight-Light Channel (WLC) for spectral calibration purposes, and the Blue Imaging Channel (BIC, 380-530 nm).

Image under @copyright of Klaus Gerhard Puschmann - Click to enlarge the image

The GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR solar telescope. The core of the system are two tunable and computer controlled etalons for spectral line scanning in collimated mounting at the direct vicinity of the secondary pupil of the instrument.

Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image

Optical design and setup of the GREGOR Fabry-Perot Interferometer including Halpha and Ca II K Lyot filter imaging.  I completed the optical design and setup in August 2013. Figure from right to left: Blue Imaging channel (BIC, blue light-beam), White-light channel (WLS, yellow light-beam), BroadBand Channel (BBC, light-red light beam), spectropolarimetric NarrowBand Channel (NBC, red light-beam), Laser/Photomultiplier Channel (Laser/MP, yellow light beam).  Halpha and Ca II K Lyot filter are denoted by orange color. Design based on calculations that I performed in geometrical optics. Graphic produced with Microsoft PowerPoint. 

Image @copyright Klaus Gerhard Puschmann. - Click to enlarge the image.

Deployed Lyot filters @ the GREGOR Fabry-Perot Interferometer. 

 

The Lyot filters are part of an innovative and novel multi-wavelength imaging system (MWIS) that gathers information about fine structure and dynamics in the solar photosphere and chromosphere simultaneously to the spectroscopic and spectropolarimetric measurements with the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope. I completed MWIS in August 2013. The Halpha Lyot-Filter is property of the Einsteinturm.

Click to enlarge the image

Between 2011 and 2013 I integrated the following Opto-mechanical Components into the GREGOR Fabry-Perot Interferometer (GFPI): Two Filter Sliders (upper left), each harbouring two interference filtersl; while in the narrow-band channel of the instrument, the filter slider allows the sequential scanning of spectral lines, the filter slider in the broadband channel allows the simultaneous recording of broadband images at the same wavelength range. 3-Mirror System (upper right) for observations > 650 nm, replacing the former pentaprism with a cutoff @ 650 nm; This allows for the first time the scanning of chromospheric sepctral lines like Halpha or Ca II IR. New Laser-Photomultiplier Channel (bottom) with a Laser-Beam Expander for better Finesse adjustment of the etalons (improved parallelicity of the etalon plates) and  improved spectral resolution of the instrument. The CAD-Designs have been perfromed and kindly provided by Dipl. Ing. S.M. Bauer (AIP).

 

Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image
Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image

Snapshot of the GUI of the instrument control software (ICS) for the GREGOR Fabry-Perot Interferometer (GFPI). I developed the GFPI-ICS in collaboration with T. Seelemann (LaVision, Göttingen, Germany) between 2004 and 2013.

 

The GFPI-ICS provides an extended and complex Graphical User Interface (GUI) and completely automated alignment, calibration and observation procedures, dramatically simplifying the usage of the extremely complex instrument.

Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image

The GUI of the GREGOR Fabry-Perot Interferometer Control software: First Spectrum ever observed with the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR solar telescope that I recorded in 2012. 

Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image

Flow chart of the communications between the GREGOR Fabry-Perot Interferometer control computer (DaVis) and internal and peripheral devices. PTU: programmable timing unit; CCD 1 & CCD 2: CCD detectors; FLC 1 & FLC 2: ferro-electric liquid crystals; CS100 (1) & CS100 (2): etalon controllers; FPI 1 & FPI 2 etalons; GTCS: GREGOR Telescope Central Server; GRIS: Grating Infrared Spectrograph.

Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image

Optical Design for the Integration of the BLue Imaging Solar Spectrometer (BLISS, 380-530 nm, optical elements marked with "a") into the GREGOR Fabry-Perot Interferometer (GFPI, 530-860 nm).

 

BLISS is essentially a clone of the GFPI, optimized for the wavelength range 380-530 nm. The presented design is based on calculations that I performed in geometrical optics. I produced the graphics by means of Microsoft PowerPoint.

 

 

Below one finds context information to both GREGOR Fabry-Perot Interferometer (GFPI) and BLue Imaging Solar Spectrometer (BLISS):

 

 

September 2006:

 

"From the Göttingen Fabry-Perot Interferometer to the GREGOR Fabry-Perot Interferometer" - Workshop "Modern Solar Facilities - Advanced Solar Science". Presentation of the finished design for the "GREGOR Fabry-Perot Interferometer". Description of new cameras, etalons, control software, opto-mechanical components, optical design. Please download the document below.

puschmann_web-small.pdf
PDF-Dokument [3.9 MB]

November 2012:

 

Status report - GEGOR Fabry-Perot Interferometer  - Colloquium @ Instituto de Astrofísica de Canarias. Please click here to see the talk.

Status report - GEGOR Fabry-Perot Interferometer - A similar talk held @ Kiepenheuer Institut für Sonnenphysik (KIS) - Freiburg, November 2012
puschmann_kis_2012_short_final_small.pdf
PDF-Dokument [5.2 MB]

"The GREGOR Fabry-Perot Interferometer - Comissioning and Science Verification" - ePoster present during the 1st SOLARNET -3rd EAST/ATST Meeting in Oslo, 5-8 August 2013. A pdf-file of the presentation can be downloaded below.

The GREGOR Fabry-Perot Interferometer (GFPI) - Technical Innovations and Results achieved in 2013.

Abstract: The present contribution provides a summary of not yet published technical innovations to the GREGOR Fabry-Perot Interferometer (GFPI) at the 1.5m GREGOR Solar Telescope (Europe's largest solar telescope) that I implemented in 2013 as the Instrument Scientist of the GFPI. It also represents an overview of first important and not yet published observational results that I achieved with the GFPI in 2013. The results and achievements can be considered as a milestone in the scientific verification and further development of the Instrument. Please download the document below.

The GREGOR Fabry-Perot Interferometer (GFPI) - Technical Innovations and Results achieved in 2013.
DOI: 10.13140/RG.2.1.4175.9849, published July 2015 on Researchgate
Puschmann-2015-rg-small.pdf
PDF-Dokument [2.7 MB]

 

Observational Highlights: Imaging, Spectroscopy & Polarimetry with the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope

First Context Imaging Data (G-band) @ full spatial sampling (corresponding to a spatial resolution of 60 km on the solar surface) that I observed in Spring 2013 with the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope. Subfield: Sunspot. The broad-band reconstruction has been performed with a modified version (Puschmann & Sailer, 2006, A&A 454, 1011) of the Göttingen broadband reconstruction code (de Boer, 1993, PHD-Thesis) accounting for the field dependent Adaptive Optics correction, which is part of the GFPI-Datapipeline (Puschmann & Beck, 2011, A&A 533, 21) iSPOR-DP, the Imaging Spectropolarimetric Parallel Organized Reconstruction Data Pipeline. e-Poster: "Synergies between ground and space based solar research", 1st SOLARNET meeting, Oslo, August 2013. For more details see Section Scientific Results 2012-2013 .

Raw image and Speckle reconstructed broad-band of the first context imaging Data (G-band) @ full spatial sampling (corresponding to a spatial resolution of 60 km on the solar surface) that I observed in Spring 2013 with the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope. Subfield: Quiet Sun. The broadband reconstruction has been performed with a modified version (Puschmann & Sailer, 2006, A&A 454, 1011) of the Göttingen broadband reconstruction code (de Boer, 1993, PHD-Thesis) accounting for the field dependent Adaptive Optics correction, which is part of the GFPI-Datapipeline (Puschmann & Beck, 2011, A&A 533, 21) iSPOR-DP, the Imaging Spectropolarimetric Parallel Organized Reconstruction Data Pipeline. e-Poster: "Synergies between ground and space based solar research", 1st SOLARNET meeting, Oslo, August 2013. For more details see Section Scientific Results 2012-2013 .

Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image

Multi-wavelenght Imaging System (MWIS) - GREGOR Fabry-Perot Interferometer (GFPI) @ the 1.5m GREGOR Solar Telescope. Simultaneus Observations in 5 different channels: GFPI Narrow Band Channel (NBC) - spectroscopy & polarimetry; GFPI Broad Band Channel (BBC)- Imaging; GFPI Halpha Lyot Channel (HLC) -imaging, GFPI Gband - CaIIK Lyot Channel (Bue Imaging Channel, BIC). For more details see Section Scientific Results 2012-2013 and Breaking News 2015

 

Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image

Observational Targets - August 2013 - GREGOR Fabry-Perot Interferometer @ 1.5m GREGOR Solar Telescope in spectroscopic and spectropolarimetric mode, accompanied by an innovative and novel multi-wavelength imaging setup (MWIS), including a G-band Interference filter and a Halpha- and CaIIK Lyot filter, respectively. The broadband reconstructions have been performed with a modified version (Puschmann & Sailer, 2006, A&A 454, 1011) of the Göttingen broadband reconstruction code (de Boer, 1993, PHD-Thesis) accounting for the field dependent correction of Adaptive Optics, which is part of the GFPI-Datapipeline (Puschmann & Beck, 2011, A&A 533, 21) iSPOR-DPImaging Spectropolarimetric Parallel Organized Reconstruction Data Pipeline. Targets: Sunspots and a quiet solar region at different heliocentric angles. The data have been processed on iSPOR-S, the Imaging Spectropolarimetric Parallel Organized Reconstruction Server. For more details see Section Scientific Results 2012-2013 and Breaking News 2015

Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image

Still image of a time series of the first Stokes I spectra @ full spatial sampling (corresponding to an unique spatial resolution of 60 km on the solar surface) that I recored with the GREGOR Fabry-Perot Interferometer @ 1.5m GREGOR Solar Telescope  on 14 August 2013. The spectral observations have been  accompanied by context imaging obtained within an innovative and novel Multi-Wavelength Imaging Setup (MWIS) of the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope, thus recording simultaneously photospheric and chromospheric small scale structure and their dynamics. From left to right and from top to bottom: Speckle reconstructed Broadband Image (630 nm; BB-SP) of the sunspot under investigation; Speckle-Deconvolved Narrowband Continuum Image (Fe I 630.2 nm line; NB-Cont), Narrowband Line-Core Image (Fe I 630.2 nm line; NB-Core), Line-of-Sight Velocity (Fe I 630.2 nm line; LoS Vel), Full-Width @ Half-Maximum (Fe I 630.2 nm line; FWHM) and Equivalent Width (Fe I 630.2 nm line; EQW); Speckle reconstructed G-band, Halpha Lyot- and CaIIK Lyot Images. For more details see Section Scientific Results 2012-2013 and Breaking News 2015

Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image

From 16 to 19 August 2013, I performed the first spectropolarimetric observations ever recorded with the GREGOR Fabry-Perot Interferometer  @ the 1.5m GREGOR Solar TelescopeThe spectropolarimetric observations have been  accompanied by context imaging obtained within an innovative and novel Multi-Wavelength Imaging Setup (MWIS) of the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope, simultaneously recording photospheric and chromospheric small scale structures, their dynamics and related magnetic fields. The processing of the data is in progress. However, due to the alt-azimuthal mount of GREGOR, a time-dependent telescope model is required in addition for a precise calibration of the spectropolarimetric observations. The available model (developed by a former AIP colleague) unfortunately turned out to be immature/incomplete at this point. For more details see Section Scientific Results 2012-2013 and Breaking News 2015

Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image

Polarimetric Calibration Measurement with the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope (August 2013), demonstrating the excellent performance of the vector polarimetric mode of the instrument, including the new and automated instrumental calibration procedure that has been implemented in the instrument control software within a collaboration of La Vision Göttingen and myself. However, due to the alt-azimuthal mount of GREGOR, a time-dependent telescope model is required in addition for a precise calibration of the spectropolarimetric observations. The available model (developed by a former AIP colleague) unfortunately turned out to be immature/incomplete at this point. For details of the related observations see Section: Scientific Work 2012-2013

Image @copyright Klaus Gerhard Puschmann - Click to enlarge the image

Breakthrough - 8 October 2013: First Ca II IR spectra ever observed with the GREGOR Fabry-Perot Interferometer. I accompanied my spectroscopic observations by context imaging within an innovative and novel Multi-Wavelength Imaging Setup (MWIS) of the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope. Until today, the context imaging data  are exclusively retained by the AIP. Not even within an extremely costly juridical fight of more than a year I received copies of my observational data.  The broadband reconstructions have been performed with a modified version (Puschmann & Sailer, 2006, A&A 454, 1011) of the Göttingen broadband reconstruction code (de Boer, 1993, PHD-Thesis) accounting for the field dependent correction of Adaptive Optics. The narrow-band data have been deconvolved using a modified version of a code developed by Krieg et al., 1999, A&A 343, 983 and K. Janssen, 2003, PHD-Thesis, which is based on the method of Keller & v.d. Luehe, 1992, A&A 261, 321. The codes are part of the GFPI-Datapipeline (Puschmann & Beck, 2011,A&A 533,21)

iSPOR-DP, Imaging Spectropolarimetric Parallel Organized Reconstruction Data Pipeline. The data have been processed on iSPOR-S, the Imaging Spectropolarimetric Parallel Organized Reconstruction Server. For more details see Section Scientific Results 2012-2013 and Breaking News 2015

Angular resolution comparison between spectroscopic Ca II IR (854.2 nm) observations performed with CRISP/SST and GFPI/GREGOR (2013).

Breakthrough - 7 October 2013: First  Halpha spectra ever observed with the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope. I accompanied my spectroscopic observations by context imaging within an innovative and novel Multi-Wavelength Imaging Setup (MWIS) of the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope. Until today, the context imaging data  are exclusively retained by the AIP. Not even within an extremely costly juridical fight of more than a year I received copies of my observational data.  The broad-band reconstructions have been performed with a modified version (Puschmann & Sailer, 2006, A&A 454, 1011) of the Göttingen broadband reconstruction code (de Boer, 1993, PHD-Thesis) accounting for the field dependent correction of Adaptive Optics. The narrow-band data have been deconvolved using a modified version of a code developed by Krieg et al., 1999, A&A 343, 983 and K. Janssen, 2003, PHD-Thesis, which is based on the method of Keller & v.d. Luehe, 1992, A&A 261, 321. The codes are part of the GFPI-Datapipeline (Puschmann & Beck, 2011, A&A 533, 21) iSPOR-DPImaging Spectropolarimetric Parallel Organized Reconstruction Data Pipeline. The data have been processed on iSPOR-S, the 

Imaging Spectropolarimetric Parallel Organized Reconstruction Server. For more details see Section Scientific Results 2012-2013 and Breaking News 2015

@copyright Klaus Gerhard Puschmann

Breakthrough October 2013! Time series of specific Halpha line-parameters calculated from my observations of a sunspot observed on 7 October 2013 with the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR solar telescope. Upper pannels - from left to right: Bisector Velocity @ 90% and 17% Line Depression; Bisector Width @ 17% Line Depression. Lower panels - from left to right: Broad-Band Intensity, Line-Wing Intensity, Intensity @ 50% Line Depression. The data have been processed on iSPOR-S, the Imaging Spectropolarimetric Parallel Organized Reconstruction Server. Most remarkable feature despite the perfectly resolved sunspot fine structure: Running umbral/penumbral waves. For more details see Section Scientific Results 2012-2013 and Breaking News 2015

 

Observational Highlights: Imaging, Spectroscopy & Polarimetry with the GREGOR Fabry-Perot Interferometer still deployed @ the German Vacuum Tower Telescope (VTT)

 

Time series of Halpha narrow-band spectra and broad-band images that I observed in 2006 with the GREGOR Fabry-Perot Interferometer (GFPI) @ the German Vacuum Tower Telescope (VTT). The presented movies are the results of a common investigation of Bruno Sanchez Andrade Nuno and myself under my directive and instructions. The broad-band reconstructions have been performed with a modified version (Puschmann & Sailer, 2006, A&A 454, 1011) of the Goettingen broadband reconstruction code (de Boer, 1993, PHD-Thesis) accounting for the field dependent correction of Adaptive Optics. The narrow-band data have been deconvolved using a modified version of a code developed by Krieg et al., 1999, A&A 343, 983 and K. Janssen, 2003, PHD-Thesis, which is based on the method of Keller & v.d. Luehe, 1992, A&A 261, 321. The codes are part of the GFPI-Datapipeline (Puschmann & Beck, 2011, A&A 533, 21) iSPOR-DP, the Imaging Spectropolarimetric Parallel Organized Reconstruction Data Pipeline. Upper Panel: Speckle-deconvolved Halpha line-core images; Middle Panel: Speckle-deconvolved Halpha line-wing images; Lower panel: Speckle-reconstructed Broad-band images @656 nm. B. Sanchez Andrade Nuno, K.G. Puschmann, Kneer, F. 2007, 2007msfa.conf..273S.

Time series of line parameters from spectropolarimetric observations of the Fe I 525 nm line I performed with the GREGOR Fabry-Perot Interferometer GFPI @ the German Vacuum Tower Telescope (VTT) in 2006. The broad-band reconstructions have been performed with a modified version (Puschmann & Sailer, 2006, A&A 454, 1011) of the Göttingen broadband reconstruction code (de Boer, 1993, PHD-Thesis) accounting for the field dependent correction of Adaptive Optics. The narrow-band data have been deconvolved using a modified version of a code developed by Krieg et al., 1999, A&A 343, 983 and K. Janssen, 2003, PHD-Thesis, which is based on the method of Keller & v.d. Luehe, 1992, A&A 261, 321. The codes are part of the GFPI-Datapipeline (Puschmann & Beck, 2011, A&A 533, 21) iSPOR-DP, the Imaging Spectropolarimetric Parallel Organized Reconstruction Data Pipeline. From left to right: Speckle reconstructed broad-band image; Speckle deconvolved narrow-band continuum intensity image; LOS-velocity map, Line-core intensity map, effective magnetic field map from weak field approximation. Region of interest: Dynamics of a magnetic network patch and the surrounding quiet Sun region (Puschmann et al. 2007, msfa.conf, 151p).

 

 

Spectral Line Inversion, Numerical Analysis, Mathematical Modeling

Results from a 3D geometrical semi-empirical modeling of an inner penumbral region of a sunspot subsequently applied to spectral line inversions of spectropolarimetric data obtained with the Solar Optical Telescope (SOT) onboard the Japanese Hinode Satellite: Electrical current density, twist, helicity, Wilson depression, plasma beta, total energy flux and the real geometrical height distribution of different physical parameters in a 2D FOV. The results have been obtained in collboration with Basilio Ruiz Cobo (IAC).

"A geometrical height-scale for sunspot penumbrae"; Seminar held @ AIP in May 2010
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