Author Topic: subframeselector with camera raws  (Read 4122 times)

Offline georg.viehoever

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subframeselector with camera raws
« on: 2014 November 02 12:20:09 »
- it would be nice if SubframeSelector would extract Date (UTC) from raw files (in my case: Canon CR2). It apparently can do so from the calibrated .fits files generated by BPP fromt he same .CR2 files, not not directly from the original CR2.
- Could we re-index files by date? This would help to identify problems that are caused by time, for instance changing weather conditions or dawn. Alternatively, allow plots to use the rank(date) as abzissa.

Georg
Georg (6 inch Newton, unmodified Canon EOS40D+80D, unguided EQ5 mount)

Offline mschuster

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Re: subframeselector with camera raws
« Reply #1 on: 2014 December 08 21:31:50 »
Georg,

Sorry I missed your post. Some comments (maybe I misunderstand what you are asking for):

- The script needs luminance to detect stars and fit star profiles, it won't work directly on CFA. Having the script accept CFA would require the script to have all Cal/BPP machinery. IMO not feasible, not maintainable.

- Simple time indexing is possible I think, but at least for me not too useful because I use an exposure scheduler, so basically all my subs are time approved. Criteria is complex (sun/moon rise/set times, twilight times, target transit times, pre/post mount flip avoidance, refocus overhead included, overhead for flats included, etc).

Mike

Offline georg.viehoever

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Re: subframeselector with camera raws
« Reply #2 on: 2014 December 08 22:06:39 »
Mike,
 I was hoping to use subframe selector to do a selection of raws before throwing them into BBP. I understand that it needs lum to produce exact results, but even if applied to RAWs sithout debayer it does help to find images with tracking errors, clouds, dusk, ...

Being able to plot with time on the x-axis would help to visualize time related issues, such as dawn, clouds etc.

Georg (6 inch Newton, unmodified Canon EOS40D+80D, unguided EQ5 mount)

Offline mschuster

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Re: subframeselector with camera raws
« Reply #3 on: 2014 December 09 09:53:50 »
Georg,

Can you run BatchDebayer on your .CR2s and then run the script on the resulting .fits and avoid Cal/BPP?

I tried this on a .CR2, the FITS header DATE-OBS is copied, but of course the script still needs time/x-axis. But at least you can get the data in quicker.

Mike

Offline georg.viehoever

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Re: subframeselector with camera raws
« Reply #4 on: 2014 December 09 10:30:40 »
Yes, batch debayer is a solution to the date problem...
Thanks for providing this idea.
Georg
Georg (6 inch Newton, unmodified Canon EOS40D+80D, unguided EQ5 mount)