Specify dark filter for darkflats

[swizzlr]

Users commonly have a dark filter (an opaque piece of plastic) in their filter wheel as an alternative to a mechanical shutter for taking darks. Adding a setting to the filter wheel options to specify a dark filter could allow the flats wizard to automatically cycle to this filter before taking darks, in order to reduce light leakage beyond simply covering the telescope’s objective lens. This filter could also be the default for dark and bias frames.

[Dale Ghent]

This is already possible in 1.11’s Advanced Sequencer.

[swizzlr]

Excellent, thank you!

[pdb]

I tried a few things with the advanced sequencer, but looks as this is not (yet?) possible in 1.11

• Needs a flat panel connected
• can then switch the light off, but can’t find anything to change the filter.
• Tried to do a filterswitch before the trained darkflat, but the filter changes back to the “color” filter when doing the exposure.

So an implementation of a filter as “shutter” would be appreciated. Mainly for the case when flats are taken with the wizzard. (I have a flatbox but that is controlled via a Pegasus Ultimate Powerbox V2 which would require me to write a special ascom driver.)

Regards,

Paul

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