Implementation of the control electronics for KMOS instrument

Hans-Joachim Hess; Ivica Ilijevski; Helmut Kravcar; Josef Richter; Josef Rühfel; Christoph Schwab

doi:10.1117/12.857988

15 July 2010 Implementation of the control electronics for KMOS instrument

Hans-Joachim Hess, Ivica Ilijevski, Helmut Kravcar, Josef Richter, Josef Rühfel, Christoph Schwab

Proceedings Volume 7735, Ground-based and Airborne Instrumentation for Astronomy III; 77352Q (2010) https://doi.org/10.1117/12.857988
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

The KMOS Instrument is built to be one of the second generation VLT instruments. It is a highly complex multi-object spectrograph for the near infrared. Nearly 60 cryogenic mechanisms have to be controlled. This includes 24 deployable Pick-Off arms, three filter and grating wheels as well as three focus stages and four lamps with an attenuator wheel. These mechanisms and a calibration unit are supervised by three control cabinets based on the VLT standards. To follow the rotation of the Nasmyth adaptor the cabinets are mounted into a Co-rotating structure. The presentation will highlight the requirements on the electronics control and how these are met by new technologies applying a compact and reliable signal distribution. To enable high density wiring within the given space envelope flex-rigid printed circuit board designs have been installed. In addition an electronic system that detects collisions between the moving Pick-Off arms will be presented for safe operations. The control system is designed to achieve two micron resolution as required by optomechanical and flexure constraints. Dedicated LVDT sensors are capable to identify the absolute positions of the Pick- Off arms. These contribute to a safe recovery procedure after power failure or accidental collision.

Citation Download Citation

Hans-Joachim Hess, Ivica Ilijevski, Helmut Kravcar, Josef Richter, Josef Rühfel, and Christoph Schwab "Implementation of the control electronics for KMOS instrument", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77352Q (15 July 2010); https://doi.org/10.1117/12.857988

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