Brain,
What you are asking is not clear - to me anyway.
Ekos is about collecting the data not processing it.
Are you asking that a master dark is automatically subtracted from each flat before being saved?
Paul

You have

Master bedroom
Master dark
vice president

but headmaster, the head teacher


so a dark used for calibration of a flat would be:

Flat dark

It will have the same exposure length as a flat.

I bias is a frame with exposure of zero seconds or very close to zero=0.001 seconds.

Also found this discussion about to proper naming:

www.cloudynights.com/topic/594366-does-a...eplace-a-bias-frame/

I'm open for suggestions.

Han

For what it's worth, I use a folder for flats and collect the darks for flats as a subfolder of the flats folder. I choose to spell it out here to distinguish them from darks for lights, which is generally just called darks.

In any case, just keep track of where you put your darks. After I have masters, I have all the exposure lengths in a single folder for a date, gain and temperature. If I need to do new flats, I calibrate them with the appropriate master dark. In my case, I have one narrowband flat exposure equal to my shortest light exposure. I then don't have to shoot different flats for that filter.

This would be a useful feature if combined with the calibrate facility. If I shoot flats with a set ADU requirement of say 30,000 then I get different exposure rates for each filter ranging from 0.3s upwards, problem is they are not 0.3s but in fact
L 0.313412s
R 0.683737s
G 1.582250s
B 0.790333s

So this becomes a bit of a pain to then make sure the right exposure is in the right place for the dark to be taken - be good to perhaps store this with say the focus value ? (last flat dark exposure per filter?)

I also think that could be a great function have a DARKFLAT option and an autamatin plan created with the same values of exposure of the flats for each filter. Acutally I have to make a DARK plan copiyng the exposure times from the flat plan.

Any news?

Any news?

I'll second this. I've gotten used to having dark flats as an option in other DSLR control programs and, from what I can tell, the recommendation is to use flat darks/dark flats for calibrating your flats for any CMOS based sensor rather than bias frames and scaling which would include my ZWO/ASI cameras.

For all practical purposes, I'm really just looking for a label on the files; near as I can tell, there is no standardized FITS imagetyp keyword for this, so it's really a convenience for me to organize my files correctly.

In that case I repeat my comment at the top of this thread: simply create darks with the same exposure time as your flats and then rename the folder from Dark to DarkFlat and rename the files in that directory in a similar way. I agree that it would be much more convenient to have the possibility to select a DarkFlat option in Ekos but until then this is a perfectly viable option. It is possible to write a bash script to do the renaming automagically if you want though it may be tricky if you have both Darks and DarkFlats in the same directory.

Well, Flat Darks are not different from other Darks, is it? But if you only want to easily see which type they are, just add the exposure time or a timestamp to the filename for those type of darks?

As an ASI camera user, who seems to be getting poor results using Flats at all I would like to suggest a couple of changes:

1. Flats - An option to set the number of significant digits for the exposure time, for instance, I don't want an auto-calculated exposure time of 0.534323 seconds, just make it 0.5 seconds, or 0.53 seconds.
2. Dark Flats, would be nice to have a check box in Flats to say also create Dark Flats, then when all the flats (after going through all the filters) in the sequence are done, bring the pop-up to cover the scope, allow user to select OK, and rerun the Flats sequence again (but without autocalculating the ADUs for each filter and just using the exposure time used for the flats.).

For (2) - it would be good if I only have to remove the flat light source and cover the scope once in the whole process (8 filters in the wheel).

The above would help me enormously in testing with different ADUs.

I seem to get best results with just Darks and Bias, despite having a ZWO camera (although it is a Pro, so has the 256MB buffer).

I take flat darks in Ekos as just regular darks and feed them into Weighted batch processing script and it figures out that these darks apply to flats because they have same exposure. Never felt a need for special feature in Ekos