Specifications

SBIG STF-8300 Manual
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of images of an object. These exposures can be taken unguided as
long as the "Snapshot time" does not exceed the length of time
before tracking errors of your clock drive become apparent. This
allows you to image and track without guiding or the need to
connect the CCD Relay port to your drive motors.
Track List - The Track List is an ASCII file generated by CCDOPS during
a Track and Accumulate session. The Track List logs all the
corrections made by CCDOPS for each of the images. Track lists
are required when flat fielding Track and Accumulate images.
Tri-Color - Tri-Color refers to color images created using three different
colors mixed into a balanced color image using red, green and blue
filters. An object is imaged three times, once with each color filter.
The three images are then co-added and color balanced with the
appropriate software.
Vignetting - Vignetting is obstruction of the light paths by parts of the
instrument. It results in an uneven illumination of the image plane.
The effects of vignetting can be corrected using flat field images.