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Up: UKIRT Instruments | Next: IRCAM3

The CGS4 manual documents sensitivities and resolutions and general information necessary to take data using CGS4. You can move back to this table of contents using the CGS4 icon at the top and bottom of each section.

Before using CGS4 you should have read the "Introduction to CGS4" and the documents in the online manual below  and become familiar with the contents of the documents discussing recommended exposure times, configs, execs and general observing procedures.

Check the "Current Status" document to find out which gratings are currently available in CGS4, news and planned changes. Please note that the configuration for semester 98B is now available in this document. A tentative plan for semester 99A will also be available on this page. There is a link to the new predicted sensitivities on that page as well.

Contents:

1) Introduction

• Introduction to CGS4
• Optical layout
• Current status

2) How to prepare for your CGS4 run

•  Using UKIRT_PREP to prepare for CGS4 observing
•  Guide to CGS4 configs
•  Guide to CGS4 execs
•  Preparing for echelle observations

3) Operating CGS4

•  Brief instructions on how to run CGS4
•  Peakup rows
•  CGS4 latency
•  Array test information
•  The CGS4/IRPOL manual
•  Changing between CGS4 and IRCAM

4) General observing information

•  CGS4 sensitivities, resolution, wavelength coverage and pixel scales
•  Optimum and background limited exposure times
•  Mauna Kea OH lines
•  A guide to slit position angles
•  Arc spectra and flat exposure times
•  Using the subarrays
•  40 l/mm grating efficiency
•  CGS4 filters

5) Miscellaneous

•  Where to find CGS4 data files

6) Data reduction

•  The manual for portable CGS4 dr
•  Simple CGS4 reduction steps
•  Figaro cookbook for CGS4 data reduction
•  Correcting curvature in CGS4 spectra
•  Correcting sloping spectral lines
•  Reducing CGS4 data using IRAF

Up: UKIRT Instruments | Next: IRCAM3 

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