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INDI Library v1.9.9 Released (30 Nov 2022)

Bi-monthly INDI Library released with new drivers and bug fixes.

Dark filter not selected when taking dark frames

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In the latest Ekos from git as of 2022-10-30, when setting up a sequence for capturing dark frames, the sequencer no longer records the filter selected. Then, when running the sequence, it's left on whatever filter was selected before.

In my filter wheel, in position 8, I have an opaque "dark" filter specifically for taking darks.

2 months 4 weeks ago #87790
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Kevin,

I think this is because it assumes you have a shutter to take darks.

If you want to use a filter to take a dark you will need to do it as a light frame, but I think this is likely to allow light leakage from the other filters.

Paul
Losmandy G11 with Gemini 2 controller
QSI 583/683 monochrome cameras with filter wheel
Starlight Xpress Lodestar X2 guide camera
Microtouch Focuser controlled using Arduino UNO emulating Feathertouch controller
Raspberry Pi 2GB with Raspberry Pi OS 64bit Bullseye
Last edit: 2 months 4 weeks ago by Paul.
2 months 4 weeks ago #87793

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This used to work perfectly fine in previous builds.
2 months 4 weeks ago #87794

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BTW I take my darks "in the dark", even with the dark filter in place. Just an extra level of darkness :)
2 months 4 weeks ago #87795

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In all previous released when taking darks, the filter is never recorded. There was a request to assigned a dark filter that's automatically set whenever a dark is taken, but this is not yet implemeted.
Jasem Mutlaq
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2 months 4 weeks ago #87806

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Am I going crazy? I swore it used to work! I guess I just imagined it. lol
2 months 4 weeks ago #87813

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It is unclear to me what purpose this would serve.
Is it because the camera does not have a shutter and a filter is being used as a replacement?

Paul
Losmandy G11 with Gemini 2 controller
QSI 583/683 monochrome cameras with filter wheel
Starlight Xpress Lodestar X2 guide camera
Microtouch Focuser controlled using Arduino UNO emulating Feathertouch controller
Raspberry Pi 2GB with Raspberry Pi OS 64bit Bullseye
2 months 4 weeks ago #87814

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Yes. My camera does not have a shutter. I have an ASI1600MM Pro with an 8-position filter wheel. I have 7 filters (LRGB, Ha, SII, OIII). I had an empty 8th slot, so I figured I'd put a opaque "dark" filter in there.
2 months 4 weeks ago #87815

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Kevin,

You should be able to produce the result you want by naming your object dark and selecting the opaque light filter.

Paul
Losmandy G11 with Gemini 2 controller
QSI 583/683 monochrome cameras with filter wheel
Starlight Xpress Lodestar X2 guide camera
Microtouch Focuser controlled using Arduino UNO emulating Feathertouch controller
Raspberry Pi 2GB with Raspberry Pi OS 64bit Bullseye
2 months 4 weeks ago #87817

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I'm in a situation similar to Kevin's with an ASI1600MM Pro and 8-position filter wheel and, a 'dark filter' in the 8th position. As I never could figure out how to make an automated use of the dark filter I reverted to the manual way where I would explicitly set the dark filter in the filter wheel tab of the INDI window and generate darks after that.

As mentioned earlier, it would be nice if the automated dark filter selection could be implemented in EKOS but, at least, there is a 'manual' solution.

Paul seems to have a solution worth investigating though.

Thanks,

Gilles
Last edit: 2 months 4 weeks ago by Gilles Gagnon. Reason: Added more info
2 months 4 weeks ago #87824

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Is it safe to assume that users who want to use a "dark filter" do not a scope cover, right? This way, I can add dark filter as an additional option to calibration dialog.
Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?
Add your observatory info
2 months 4 weeks ago #87858

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I use a DIY dark cover (Arduino based with Alnitak command set) but it's used more as an optics protector that a true dark cover so it may let light pass through. The "dark filter" would thus be an appreciated calibration add-on. Thanks!
2 months 3 weeks ago #87897

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