DEIMOS user script post

Name

post_calib -- acquire calibration data for DEIMOS slitmask image(s)

Purpose

Given a list of DEIMOS images, acquire calibration data
(arcs and/or flats) for each image at the same physical
rotator position. This should produce calibration data
which better match the images.

Usage

post_calib [-nofcs] [-arctime <n>] [-flattime <n>] \
[-n_arcs <n>] [-n_flats <n>] [-lamps values] \
[<image1> <image2> ... <imageN>]

Arguments

imageN = name of image to calibrate

Switches

-nofcs = do not wait for FCS updates. This is useful when
calibrating in a configuration with no FCS setup defined
-arctime = specify an xposure time to use for arcs [integer, default=1]
-flattime = specify an exposure time to use for flats
[integer, default=12]
-n_arcs = number of arc exposures to take [integer; default=1]
-n_flats = number of quartz flat exposures to take [integer; default=3]
-lamps = specify a comma-separated list of arc lamps to use
for arc exposures [default is Ne,Ar,Kr,Xe]

Output

A report on the exposures is written to STDOUT on completion.

Side Effects

Will close the hatch if required. And leave it closed.

Restrictions

The rotator must be unlocked and under observer control.

Exit values

0 = normal completion
1 = wrong number of arguments

Example

1) Acquire calibrations for a sequence of images at the same
rotator positions at which the imatges were acquired:
post_calib d0927_0101.fits d0927_0104.fits d0927_0107.fits

1) Same, using non-standard flatfield time.
post_calib -flattime 6 d0927_0101.fits d0927_0104.fits d0927_0107.fits