Achieving a wide-field near-infrared camera for the Calar Alto 3.5-m telescope

Coryn A. L. Bailer-Jones; Peter Bizenberger; Clemens Storz

doi:10.1117/12.395447

16 August 2000 Achieving a wide-field near-infrared camera for the Calar Alto 3.5-m telescope

Coryn A. L. Bailer-Jones, Peter Bizenberger, Clemens Storz

Proceedings Volume 4008, Optical and IR Telescope Instrumentation and Detectors; (2000) https://doi.org/10.1117/12.395447
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

The ongoing development of large IR array detectors has enabled wide field, deep surveys to be undertaken. There are, however, a number of challenges in building an IR instrument which has both excellent optical quality and high sensitivity over a wide field. We discuss these problems in the context of building a wide field imaging camera for the 3.5m telescope at Calar Alto with the new 2K by 2K HgCdTe HAWAII-2 focal plane array. Our final design is a prime focus camera with a 15 feet field-of-view, called Omega 2000. To achieve excellent optical quality over the whole field, we have had to dispense with the reimaging optics and cold Lyot stop. We show that creative baffling schemes, including the use of undersized baffles, can compensate for the lost K band sensitivity. A moving baffle will be employed in Ogema 2000 to allow full transmission in the non-thermal J and H bands.

Citation Download Citation

Coryn A. L. Bailer-Jones, Peter Bizenberger, and Clemens Storz "Achieving a wide-field near-infrared camera for the Calar Alto 3.5-m telescope", Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); https://doi.org/10.1117/12.395447

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