CFHT, Instruments,
Spectroscopy, Fabry-Perot.
Canada-France-Hawaii
Telescope
User's Manual for Scanning Fabry-Perot Spectrography
- R. Arsenault, P. Martin
- Version 3.02
- February, 2005
Table of
Contents
News
Foreword
1 Instrument Purpose and Performance
- 1.1 Why use it and What for?
- 1.2 The Instruments MOS, OSIS, and the AOB
- 1.3 The Fabry-Perot Etalons
- 1.4 The Detectors
- 1.5 Limiting Magnitude and Performance
- 1.6 Emission Lines versus Absorption
Lines
2 Your Observing Session: Pegasus
- 2.1 Taking an Exposure and Spectral
Scanning
- 2.2 Files Management
- 2.3 Quick Look and On the Spot Examination
of Data
- 2.4 Various Tools on Pegasus
3 Observing Procedures
- 3.1 Getting Started on the Sky
- 3.2 How to Scan
- 3.3 Calibrations
4 Future Prospects of Fabry-Perot
- 4.1 SIS Upgrade to OSIS: OSIS/FP
- 4.2 OASIS and PYTHEAS
- 4.3 MORGANE
5 Setup and Checklist
- 5.1 The Fabry-Perot in a Nut-shell
- 5.2 At the Instrument
- 5.3 On the Pegasus Session
Hyperlinks Index
News
(09/10/2003)
Deal All,
It's been a while since anything new was written here... The Fabry-Perot mode with
MOS is still offered, even if it has not been used as such for several years now.
During the last run, we used the EEV1 chip as a detector and it worked well.
However, it is a thinned chip; fringing can be an issue if
working in the red. We used it during the last MOS-FP run and
fringes with an amplitude of the order of 1-2% were seen around Halpha. Also, the
EEV1 pixels are only 13.5 microns compared to 21 microns for STIS2 (previous detector not
available anymore). The MIT 1 chip has now been tested on MOS and is the CCD to
be requested for 2005. It is a similar chip as EEV1 but does not have as bad of a
fringing problem in the red and the pixel size is 15 microns.
For further information, please contact the MOS-FP
instrument scientist.
Foreword
Although we usually do not have as much time as we would like to dedicate
to documentation and manuals, a few days has been spent thinking about
how to make this manual easy to use and most helpful to the observers.
We have tried to implement
a quick and easy help, fast keyword search feature. For instance the following
hyperlinks index, with topics chosen to provide quick answers to common
problems or typical procedures. The goal of this manual is clearly to help
astronomers get the best observations out of MOS/FP, OSIS/FP or AOB/FP,
by an adequate understanding of how these instruments work. If you feel
it does not reach this goal, please send your comments, suggestions
or criticisms (compliments are also appreciated). More information
on Fabry-Perot interferometers or the specifics of the instruments hosting
the Fabry-Perot etalons has been added as hyperlinks for the ones wishing
to read more about the details. The use of Hyperlinks often complicates
the printout of such manuals, although a special effort has been made to
keep the printing as straightforward as possible. However, it is
definitively
assumed that this manual will be accessed from a computer rather than being
read on a hardcopy.
Some observing procedures and general information can be found in the
small cookbook prepared to help the observers
during their mission.
Hyperlinks Index
- A
- B
- C
- Calibration Lamps
- CCD Control
- CFHT CCD's@
- CFHT Fabry-Perot Characteristics
- Checklist
- CS100 Settings
- CS100 Loop Control Problems
- D
- Data Cube
- Demo Pegasus Sessions
- Detectors
- E
- Exposure type
- F
- Fabry-Perot Finesse
Calculation
- Fabry-Perot Scanning Constant
Calculation
- Fabry-Perot Parallelism
Adjustment
- Fabry-Perot Introduction
- Fabry-Perot Module
- Filter slides (MOS and OSIS...)
- Filter List (CFHT)@
- Filter Control
- Field of View
- Focussing
- Focus change due to different
filters
- G
- H
- I
- Image Quality
- Image Scale
- J
- K
- L
- Logsheet
- M
- MOS/FP Schematic
- MORGANE
- N
- O
- Observation Preparation Form
- One Picture is worth a Thousand Words...
- OSIS
- OASIS
- P
- Path Difference
- PYTHEAS
- Q
- Queensgate Etalon Schematic
- R
- S
- Sampling
- SAOimage
- Scanning: Pegasus form
- Scanning Philosophy
- T
- Throughput
- U
- Useful Formulae 1
- Useful Formulae 2
- Username or Acquisition Account
- V
- W
- X
- Y
- Z
Please send comments to:
martin@cfht.hawaii.edu