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.
Hello all,
at this moment I'm busy with APP to put together a RGB-stack from M45. So far I've been able to put together 3 stacks, one for each channel, from data I shot last december with a 70 mm Tecknosky Quadruplet APO and data from the last weeks, shot with a 80 mm SW Esprit. The data from december is rotated 30 degrees compared to the recent data, but the remaining FOV after the crop is still large enough for a nice picture.
I first calibrated all the data separately and saved the calibrated frames in 3 different folders (for each color a different folder). After that I loaded all of the calibrated blue frames, did a star analysis and let APP decide which frame would be the reference frame for the registration. After that I did a normalization and integration. I cleaned up the file list, except for the (blue) reference frame, loaded all the calibrated red frames, and again did a star analysis (also on the remaining blue reference frame). Prior to the registration I manually selected the blue frame as reference for the registration. Just prior for the integration of the red lights, I deselected the blue reference frame to leave it out for the integration. With the same workflow I processed the green data as well. The result are 3 stacks that are already aligned and can be combined to a RGB-frame.
Attached a screenshot of the blue stack before cropping, made up from 45 frames of 5 minutes.
regards,
Jeroen
Excellent Jeroen,
You are quickly mastering the capabilities of APP for multi-channel processing 😉
Looking at the blue stack, probably stronger LNC (higher degree) and perhaps more iterations and a bit higher Multi-Band Blending percentage could give you an even bigger Field of View to work with.
Looking forwad to the color version 😉
Cheers,
Mabula
Hi Jeroen,
Thanks for this very helpful step-by-step description of your workflow rather than just showing us your interim image. Keep up the great work, and I too am looking forward to seeing your completed colour image.
Best regards,
Rudy
I'm still working on this project. I do not only have data from M45 from last October and December 2016, but I also found a data set I shot at the end of September this year. So far I have to process a total of 256 frames, shot with 2 different telescopes at exposures times of 300 and 600 seconds. All of the data was shot at 1x1 binning, except the RGB-data from last October, which is at 2x2 binning.
This is the final result, fully processed in APP.
Wow, stunning image Jeroen !
Beautiful and very nice composition 😉
Kind regards,
Mabula
Wonderful image Joroen! This is really looking good... as Mabula has written earlier "You are quickly mastering the capabilities of APP for multi-channel processing."
Best regards,
Rudy
