AstroTechTalk – att

Version 373 (modified by Ralph Hofferbert, 6 years ago) (diff)
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The AstroTechTalk (ger) offers a place to discuss, for all interested colleagues and especially for the technical departments, the project leaders, the administration and the scientists as the ultimately users:

status of instrumentation projects
scientific tasks and features of the instruments in construction or planned
new possible involvements
technical innovations and developments
technical problems and their solutions
logistical problems and their solutions
how to improve operation and observation
project standards.

Time: Always Fridays 11:00 - 12:00 (during the construction work: 10:00 - 11:00)

Location: MPIA Hoersaal (during the construction work: HdA Auditorium)

Outline:

Announcements (news, visitors, etc.) (mainly in German)
Talk of about 30 min about a selected topic (German or English, will be announced)
Follow up discussion and questions (German or English, depending on the speaker)

Proposals for talks: Please send an email to "hofferbert -at- mpia.de" or "naranjo -at- mpia.de" - alternatively you might reach us by phone (06221-528209 or -290) or in person (room 211 or 018) at MPIA.

Date	Speaker	Topic
28.09.2018 (11hrs, MPIA Hoersaal)	Prashant Pathak (ESO)	Closed-loop correction of atmospheric dispersion for high-contrast coronography and astrometry On ground-based telescopes employing adaptive optics (AO) systems, atmospheric dispersion compensation is essential to deliver high-quality imaging, and critical for coronagraphy and high-precision astrometry. Imperfect compensation by an atmospheric dispersion compensator (ADC) can be addressed with a high-precision on-sky measurement of residual dispersion in a closed-loop control scheme. In this talk, Prashant Pathak will present a focal plane based technique, which utilizes the chromatic scaling of speckles to measure residual dispersion (atmospheric and optical) in the final science image. The residual dispersion can be accurately measured and subsequently corrected in a closed-loop control. On-sky residual dispersion of < 1 mas across H-band was demonstrated, which reduced from 8.4 mas before closing the loop. Presentation: English Slides: English Questions: German, English
05.10.2018
12.10.2018 (11hrs, MPIA Hoersaal)	Hans-Ulrich Kaeufl (ESO)	NEAR - Planet search around Alpha Centauri with VISIR
19.10.2018
26.10.2018 (11hrs, MPIA Hoersaal)	Armin Huber	Slide-Show - Life at VLT
02.11.2018	--	Bridging day after All Saints's Day
09.11.2018
16.11.2018
23.11.2018
30.11.2018
07.12.2018 (11hrs, MPIA Hoersaal)	Wolfgang Brandner	Test of general relativity with GRAVITY
14.12.2018
21.12.2018
28.12.2018	--	Christmas Break