A new fiber slit assembly for the FOCES spectrograph

Hanna Kellermann; Frank Grupp; Anna Brucalassi; Florian Lang-Bardl; Christian Franik; Ulrich Hopp; Ralf Bender

doi:10.1117/12.2187975

11 September 2015 A new fiber slit assembly for the FOCES spectrograph

Hanna Kellermann, Frank Grupp, Anna Brucalassi, Florian Lang-Bardl, Christian Franik, Ulrich Hopp, Ralf Bender

Proceedings Volume 9605, Techniques and Instrumentation for Detection of Exoplanets VII; 96051R (2015) https://doi.org/10.1117/12.2187975
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

After successful operation at the Calar Alto telescope until 2009, and extensive lab tests at the Munich University Observatory the high resolution Échelle spectrograph FOCES (Fiber Optics Cassegrain Échelle Spectrograph) is now about to be reinstalled at the 2 m Wendelstein Observatory in the German Alps. For this new phase of operation FOCES will be equipped with new components that will improve time stability and wavelength calibration. With these modifications FOCES will meet the requirements for performing precision radial velocity measurements on a competitive level.

One of the key features of the upgraded spectrograph is the new calibration system, which uses a laser frequency comb as reference light source. Another aspect is the possibility to perform simultaneous wavelength calibration, while recording science data. For this purpose a new 4-fiber slit has been developed, which opens up the possibility to feed light from different sources at the same time through the entrance slit of the spectrograph. We present a detailed characterization of this new device, based on the results of extensive lab tests performed at the Munich University Observatory.

Citation Download Citation

Hanna Kellermann, Frank Grupp, Anna Brucalassi, Florian Lang-Bardl, Christian Franik, Ulrich Hopp, and Ralf Bender "A new fiber slit assembly for the FOCES spectrograph", Proc. SPIE 9605, Techniques and Instrumentation for Detection of Exoplanets VII, 96051R (11 September 2015); https://doi.org/10.1117/12.2187975

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available