15th Feb 2024: Astro Pixel Processor 2.0.0-beta29 released - macOS native File Chooser, macOS CMD-Q fixed, read-only Fits on network fixed and other bug fixes
7th December 2023: added payment option Alipay to purchase Astro Pixel Processor from China, Hong Kong, Macau, Taiwan, Korea, Japan and other countries where Alipay is used.
Hi,
although working with unsupported filetypes is a pain, I got pretty good results by converting to tiff with dcraw (following options : dcraw -q 3 -4 -t 0 -T ). This is 3 hours of integration time in 120 sec subs with 25 darks and 30 flats.
Camera: Sony A7rII
OTA: Canon 300/2.8 L USM (1st gen without IS) and Canon 2x TC III adapted with Metabones IV
Mount: Skywatcher Star Adventurer guided with Lacerta MGen II and an Orion Mini Guide Scope
Site: Bortle ~3
Seeing: initially good but decreasing in the last hour
Calibration of darks and flats with Sigma clipping 3 and 1 iteration
Integration with Sigma clipping 3 and 3 iterations, equal weights
The lens has some ca when paired with the 2x tc and so I first had to remove this defect in LR before running star color correction but even with that done the colors needed a lot of tweaking. I am already collecting HA data in order to bring out the star forming pockets.
A higher resolution version of the image can be found here : google drive link
Thanks for watching and reading. CS
Ben
Yes I think that is a really nice result actually, would be interesting to compare it to processing directly from the raw files when APP supports it! Thanks for sharing!
Finished around 3 hours of ha with a manually debayered Canon 40D and an Nikon 400/3.5 Ai-s lens. The difference is subtle but worth the work.
CS,
Ben
Bottom right has a bit of a red cast but other than that, it's a nice image.
Mike
