User`s guide

FLAMINGOS at the MMT
DATE_OBS - UT date at the end of the night (YYYY-MM-DD)
EXP_TIME - Exposure time for integration. Must be an integer >= 3 seconds.
NREADS - Number of non-destructive reads per endpoint (currently must equal 1)
WEATHER - Sky conditions (1=photometric, 2=thin cirrus, 3=broken clouds,
4=overcast, 5=snowing, 6=fog).
WIND - Wind conditions (1=calm, 2=low, 3=moderate, 4=high, 5=closed).
In addition, after prompting you for all of these parameters, config.exposure.pl will ask if you want to
change the bias. In imaging mode, the bias should always be set to 1.0 V!
If you wish to change just the exposure time, or just the filename and don't want to run through the entire
list of parameters, you can use the following commands:
set.exposuretime.pl - Allows adjustment of integration time and number of reads.
set.filename.pl - Allows adjustment of the filebase and directory only.
set.bias.pl - Allows adjustment of the bias only. Type i for imaging, s for spectroscopy.
C. Taking Images at a Single Pointing
singleimage.pl - Take a single image at the current pointing, with the current configuration.
more.singleimages.pl <n> - Take n images at the current pointing, with the current
configuration, and stepping the image number. This comes in very handy when taking darks!
D. Taking Dithered Images
FLAMINGOS also has the ability to take a sequence of images using a set of pre-determined dither
patterns. In order to configure the dither pattern, run config.dither.mmt.pl. This allows you to change
the following parameters:
DPATTERN The desired dither pattern. Your choices are 2x2, 3x3, 4x4, 5x5, 5point+, 5pointx
D_SCALE Additional scale factor for the offsets. The default of D_SCALE = 1 will add a border to
your images of 10 arcseconds, or a total width of 20 arcseonds to the total field of view of
the final stacked image.
D_RPTPOS Number of times to repeat each dither position.
D_RPTPAT Number of times to repeat the entire dither pattern.
STARTPOS Starting position in the dither pattern (0=first position). This is very useful if the system
crashes or hangs mid-sequence.
USENUDGE Nudge pointing center on pattern repeats.
NUDGESIZE Radial size of nudge, randomly chosen in one of the cardinal directions.
THROW Radial length to other nod beam, for on-source / off-source imaging.
THROW_PA PA of other beam for nodding.
10/23