Starlight Xpress SXVR-H694C - Manual (Page 27)

Handbook for the SXVR-H694C Issue 1 March 2012
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correction. As we are mainly interested in the bias, any very short exposure dark
frame will give a good result. The dark subtracted images should then be averaged
together before use.
After the above procedures have been executed, the flat field will be ready for use.
Load up your image for processing, subtract the dark frame and then select ‘Apply
flat field’ in the ‘Merge’ menu. The result should be an image with very few signs of
the original artefacts and you can then process it in the normal way.
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The SXVR-H694C accessory ports
The SXVR-H694C is provided with two ports for use with accessories. The
Autoguider output port is a 6 way RJ11 socket, which is compatible with the standard
autoguider input of most telescope mounts. It provides 4 active-low opto-isolator
outputs and a common return line, capable of sinking a minimum of 5mA per output.
This socket may be used for telescope control if the SXVR-H694C is employed as an
autoguider, but is primarily intended to be the control output for the optional add-on
autoguider camera head, available for use with the SXVR-H694C.