Introduction

  1. Scope
  2. The Current State of Play
  3. General Information about the AAT and AAO
  4. Acknowledgements


Introduction The Telescope & Optics The Detectors
The Imaging Cameras An Imaging Cookbook The Data you Take Away
Exposure times OFFSET_RUN files CCD Windows Data Catalogs
On-line Reduction Filters Flat-fields Blank Fields Orientation Shutters

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1. Scope

The table below summarises the imaging systems currently available to AAT users. This manual will will provide details on the use of only the first 3 systems.  Observers considering the use of Taurus should contact the AAO astronomer resposnsible for Taurus for further information (currently Joss-Bland Hawthorn jbh@aaoepp.aao.gov.au).
CCD Imaging Systems on the AAT
   Scale
(mas/um)
Usual Detector FOV Comments
f/3.3 Prime Focus + Doublet/Triplet 16.29 TEK 1K (thinned),
24um pixels, 0.391"/pix
6.67'
Prime Focus + f/1 LBL Focal Reducer Thomson 1K (coated)
19um pixels, 0.98"/pix
16.7'
f/7.9 Cassegrain Focus (Direct)  6.70 Thomson 1K (coated)
19um pixels, 0.127"/pix
2.17'
f/7.9 Cassegrain + TAURUS-2 24.84 TEK 1K (thinned)
24um pixels, 0.596"/pix
10.17' Consult jbh@aaoepp
f/15 Cassegrain+ TAURUS-2 13.13 TEK 1K (thinned)
24um pixels, 0.315"/pix
5.38' Consult jbh@aaoepp

2. The Current State of Play

This manual describes the three imaging systems (ie. apart from TAURUS-2) currently offered at the AAT. However,  plans are being made to upgrade the Prime Focus imaging system by the installation of a 6 position filter wheel, a travelling slit shutter and an automated guide-probe head. This system may not be fully implemented until sometime in 1997, however observers may find that parts of it are implemented before that. When this system is installed, parts of this manual will become obselete (especially the bits dealing with riding in the cage), and other parts will have to be updated (like how you change filters in the OBSERVER software). This manual will be updated as these changes are made, so please watch this spot.

A second aspect of this upgrade, is that it will allow the use of larger CCDs with the doublet and triplet correctors, or the use of large visiting mosaics.  (As an example, a 2048x2048 CCD would  make the f/1 imaging system obsolete.)

3. General Information about the AAT and the AAO

General information on the Anglo-Australian Observatory, the Anglo-Australian Telescope and the United Kingdom Schmidt Telescope can be found in the  AAO Observer's Guide (AAO User Manual 1) and in the AAO's WWW home page in Epping  at http://www.aao.gov.au/aaohomepage.html, or its UK mirror site http://www.ast.cam.ac.uk/AAO

4. Acknowledgements

It must be pointed out that only a small fraction of the material in this manual is actually original. The section on the f/1 system is based heavily on Elaine Sadler's Notes for Users of the f/1 Imaging System. The sections on the optical performance of the AAT and the use of the Prime Focus cage are drawn almost verbatim from David Malin's Photography with the AAT manual. The sections on defining CCD windows come from the 1989 version of the User's Guide to CCD detectors at the AAT.  My main aim in putting this manual together was to pull all this information (together with a few insights of my own) into one location for the use of CCD imaging observers, who up until now have been fairly poorly served by the existing documentation


Introduction The Telescope & Optics The Detectors
The Imaging Cameras An Imaging Cookbook The Data you Take Away
Exposure times OFFSET_RUN files CCD Windows Data Catalogs
On-line Reduction Filters Flat-fields Blank Fields Orientation Shutters

Back Contents Next

Last Contents Next

This Page maintained by : Chris Tinney (cgt@aaoepp.aao.gov.au)
This Page last updated:  28 Feb 1996, by Chris Tinney