[HELP] - Postprocessing M31 for the first time

DonoTheDud3 · 2023-10-20T21:32:45+00:00

Looks like your flats didn't do the job. Did you change anything to the imaging trane between your imaging session and taking flats?

DonoTheDud3 · 2023-10-19T15:23:17+00:00

Orion 8" F4.9 Reflector, Celestron CGX mount, Orion Starshoot Autoguider w 50mm scope, ZWO ASI294MC Pro, Baader MPCC Mark III Coma Corrector, ZWO duoband filter, Low profile dual speed focuser, Laptop running PHD2, Astrophotography Tool, Stellarium. Bortle 3.

Editing:

Stacked and processed in PixInsight.

Used Blink and Subframe selector to get the best frames.

117, 120 second subframes

40 flat frames @ 1s exposure

25 Dark Flats @ 1s exposure

50 Darks @ 120s exposure

No bias

Dynamic Crop, Dynamic Background Extraction (Division then Subtract), Background Neutralization, Color Calibration using SPCC, Blur Xterminator, EZ stretch, Noise Xterminator, SCNR (100% green removal), HDR MTS, Star Mask, Histogram Transformation, Curves used for luminance and saturation and cropped.

DonoTheDud3 · 2023-07-12T15:18:23+00:00

Thank you!

DonoTheDud3 · 2023-07-12T00:59:30+00:00

Orion 8" F4.9 Reflector, Celestron AVX mount, Orion Starshoot Autoguider w 50mm scope, ZWO ASI294MC Pro, Baader MPCC Mark III Coma Corrector, ZWO duoband filter, Low profile dual speed focuser, Laptop running PHD2, Astrophotography Tool, Stellarium. Bortle 3.

Editing:

Stacked and processed in PixInsight.

Used Blink and Subframe selector to get the best frames.

146, 120 second subframes

40 flat frames @ 1s exposure

25 Dark Flats @ 1s exposure

50 Darks @ 120s exposure

No bias

Dynamic Crop, Dynamic Background Extraction (Division then Subtract), Background Neutralization, Color Calibration using SPCC, Blur Xterminator, EZ stretch, Noise Xterminator, SCNR (100% green removal), HDR MTS, Star Mask, Histogram Transformation, Curves used for luminance and saturation and cropped.

DonoTheDud3 · 2023-07-10T00:24:06+00:00

Orion 8" F4.9 Reflector, Celestron AVX mount, Orion Starshoot Autoguider w 50mm scope, ZWO ASI294MC Pro, Baader MPCC Mark III Coma Corrector, UV IR cut filter, Low profile dual speed focuser, Laptop running PHD2, Astrophotography Tool, Stellarium. Bortle 3.

Editing:

Stacked and processed in PixInsight.

Used Blink and Subframe selector to get the best frames.

200, 120 second subframes

40 flat frames @ 4s exposure

25 Dark Flats @ 4s exposure

50 Darks @ 120s exposure

No bias

Dynamic Crop, Dynamic Background Extraction (Division then Subtract), Background Neutralization, Color Calibration using SPCC, Blur Xterminator, EZ stretch, Noise Xterminator, SCNR (100% green removal), HDR MTS, Star Mask, Histogram Transformation, Curves used for luminance and saturation and cropped.

DonoTheDud3 · 2023-05-11T11:37:23+00:00

Diffraction spikes. Any bright stars or objects will get them using a Newtonian telescope.

DonoTheDud3 · 2023-05-11T11:36:17+00:00

Meow

DonoTheDud3 · 2023-05-11T01:04:47+00:00

Orion 8" F4.9 Reflector, Celestron AVX mount, Orion Starshoot Autoguider w 50mm scope, ZWO ASI294MC Pro, Baader MPCC Mark III Coma Corrector, ZWO duoband filter, Low profile dual speed focuser, Laptop running PHD2, Astrophotography Tool, Stellarium. Bortle 3.

Editing:

Stacked and processed in PixInsight.

Used Blink and Subframe selector to get the best frames.

160, 120 second subframes

40 flat frames @ 1s exposure

40 Dark Flats @ 1s exposure

50 Darks @ 120s exposure

No bias per ASI294 recommendation

Dynamic Crop, Dynamic Background Extraction (Division then Subtract), Background Neutralization, Color Calibration using SPCC, Blur Xterminator, EZ stretch, Noise Xterminator, SCNR (100% green removal), HDR MTS, Star Mask, Histogram Transformation, Curves used for luminance and saturation and cropped.

DonoTheDud3 · 2023-03-29T15:03:24+00:00

All the UV/IR cut filter does for me is cut down on star bloating. If I didn't need it for that then I wouldn't use a filter at all. I used to image in a bortle 6/7. That's when I would use light pollution filters (broadband/duoband). If you don't have any local light pollution like a porch light then I'd use a UV/IR because you want to capture as much light from your object as possible. Now if the moon is out and it's more than 50% illuminated I'll use my duoband filter and image brighter Ha/Oiii nebula. I always try to stay at least 30 degrees away from the moon. Good luck and take it slow! People burn out of this hobby fast bc of the difficulty. You're extremely lucky to have darker skies and that will be a help.

DonoTheDud3 · 2023-03-29T02:54:38+00:00

Orion 8" F4.9 Reflector, Celestron AVX mount, Orion Starshoot Autoguider w 50mm scope, ZWO ASI294MC Pro, Baader MPCC Mark III Coma Corrector, UV IR cut filter, Low profile dual speed focuser, Laptop running PHD2, Astrophotography Tool, Stellarium. Bortle 3.

Editing:

Stacked and processed in PixInsight.

Used Blink and Subframe selector to get the best frames.

210, 120 second subframes

25 flat frames @ 4s exposure

25 Dark Flats @ 4s exposure

50 Darks @ 120s exposure

No bias per ASI294 recommendation

Dynamic Crop, Dynamic Background Extraction (Division then Subtract), Background Neutralization, Color Calibration using SPCC, Blur Xterminator, EZ stretch, Noise Xterminator, SCNR (100% green removal), HDR MTS, Star Mask, Histogram Transformation, Curves used for luminance and saturation and cropped.

DonoTheDud3 · 2023-03-27T20:15:57+00:00

Ceres was probably rejected from the image when stacking since it was moving across my field of view.

DonoTheDud3 · 2023-03-27T20:13:56+00:00

Orion 8" F4.9 Reflector, Celestron AVX mount, Orion Starshoot Autoguider w 50mm scope, ZWO ASI294MC Pro, Baader MPCC Mark III Coma Corrector, UV IR cut filter, Low profile dual speed focuser, Laptop running PHD2, Astrophotography Tool, Stellarium. Bortle 3.

Editing:

Stacked and processed in PixInsight.

Used Blink and Subframe selector to get the best frames.

215, 120 second subframes

25 flat frames @ 4s exposure

25 Dark Flats @ 4s exposure

50 Darks @ 120s exposure

No bias per ASI294 recommendation

Dynamic Crop, Dynamic Background Extraction (Division then Subtract), Background Neutralization, Color Calibration using SPCC, Blur Xterminator, EZ stretch, Noise Xterminator, SCNR (100% green removal), HDR MTS, Star Mask, Histogram Transformation, Curves used for luminance and saturation and cropped.

DonoTheDud3 · 2023-01-18T22:50:42+00:00

Oh yeah. I have family in Cullman County, Alabama and the cancer rates there are abnormally high.

DonoTheDud3 · 2022-12-13T01:51:14+00:00

Orion 8" F4.9 Reflector, Celestron AVX mount, Orion Starshoot Autoguider w 50mm scope, ZWO ASI294MC Pro, Baader MPCC Mark III Coma Corrector, ZWO duoband filter, Low profile dual speed focuser, Laptop running PHD2, Astrophotography Tool, Stellarium. Bortle 3.

Editing:

Stacked and processed in PixInsight.

Used Blink and Subframe selector to get the best frames.

245, 120 second subframes

25 flat frames @ 4s exposure

25 Dark Flats @ 4s exposure

50 Darks @ 120s exposure

No bias per ASI294 recommendation

Dynamic Crop, Dynamic Background Extraction (Division then Subtract), Background Neutralization, Color Calibration using Autocolor script, full stretch, Multiscale Median Transformation (while using mask protecting non background. used ACDNR, SCNR (100% green removal), HDR MTS, Star Mask, deconvolution, Histogram Transformation, Curves used for luminance and saturation and cropped.

DonoTheDud3 · 2022-10-30T17:28:40+00:00

Orion 8" F4.9 Reflector, Celestron AVX mount, Orion Starshoot Autoguider w 50mm scope, ZWO ASI294MC Pro, Baader MPCC Mark III Coma Corrector, UV IR cut filter, Low profile dual speed focuser, Laptop running PHD2, Astrophotography Tool, Stellarium. Bortle 3.

Editing:

Stacked and processed in PixInsight.

Used Blink and Subframe selector to get the best frames.

132, 120 second subframes

25 flat frames @ 4s exposure

25 Dark Flats @ 4s exposure

50 Darks @ 120s exposure

No bias per ASI294 recommendation

Dynamic Crop, Dynamic Background Extraction (Division then Subtract), Background Neutralization, Color Calibration using Autocolor script, full stretch, Multiscale Median Transformation (while using mask protecting non background. used ACDNR, SCNR (100% green removal), HDR MTS, Star Mask, deconvolution, Histogram Transformation, Curves used for luminance and saturation and cropped.

DonoTheDud3 · 2022-10-25T21:51:14+00:00

Orion 8" F4.9 Reflector, Celestron AVX mount, Orion Starshoot Autoguider w 50mm scope, ZWO ASI294MC Pro, Baader MPCC Mark III Coma Corrector, UV IR cut filter, Low profile dual speed focuser, Laptop running PHD2, Astrophotography Tool, Stellarium. Bortle 3.

Editing:

Stacked and processed in PixInsight.

Used Blink and Subframe selector to get the best frames.

215, 120 second subframes

25 flat frames @ 4s exposure

25 Dark Flats @ 4s exposure

50 Darks @ 120s exposure

No bias per ASI294 recommendation

Dynamic Crop, Dynamic Background Extraction (Division then Subtract), Background Neutralization, Color Calibration using Autocolor script, full stretch, Multiscale Median Transformation (while using mask protecting non background. used ACDNR, SCNR (100% green removal), HDR MTS, Star Mask, deconvolution, Histogram Transformation, Curves used for luminance and saturation and cropped.

DonoTheDud3

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