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u/Curious_Chipmunk100

M82
▲ 1 r/seestar

M82

M82
325x30s IR
325x30s LP

Processed in Pixinsight
Started with M81 M82 image
All Xterminators
Delete the Luminance layer
Stretched the RGB with HT
Curves chrominance for background, saturation for color
DBXtract on LP
Stretched Ha with HT
Continuum Subtraction: subtract RGB from Ha to get a pure Ha image
Adjust noise in the new Ha image with HT
Combined Ha with RGB using the HaRGB Combo script.
Star image star stretch
Curves on the star image
Crop the M81/82 RGB and stars image to get just the M82.
Clone stamp to clean up the background
ixlemath to combine stars to starless
Added Logo.

https://preview.redd.it/35ofo1fqq01h1.jpg?width=789&format=pjpg&auto=webp&s=9eb6ff50db401c8f4a2880ec5f621202f1269fe3

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u/Curious_Chipmunk100 — 12 hours ago
▲ 9 r/seestar

M51

Lots of work with this one. Seestar S50
12 hours integration at 30s per frame of IR and LP.

Extract the Luminance from the RGB image.
Process the Luminance to enhance the dark lanes. Adjust the black point and sharpness of the arms.The

RGB image got chrominance and black point enhanced. Dark lanes enhanced. plus a few other things

LP had the Ha extracted and ran Continuum Subtraction to subtract the R in the RGB from the Ha. Adjusted the noise level and increased the actual Ha brightness.

Ran Starx on the RGB and saved stars as RGB stars.

Added the L to the RGB using channel combo
Ha was added to the LRGB image using the NBtoRGB combo script

Finally added the stars back to the LRGB Ha image.

Of course this was all done in Pixinsight, and the usual Xterminators were used.

https://preview.redd.it/naj99iqf3d0h1.png?width=1200&format=png&auto=webp&s=8ac3626f077fddaff9e6b391b1bad0f92f0d539b

,

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u/Curious_Chipmunk100 — 4 days ago
▲ 3 r/seestar

M51

This is an RGB Ha image. 4 hours of IR and 4 hours of LP. Stacked and processed in Pixinsight. I used DBxtract to extract the Ha and the Oiii out of the LP filter. Next, I used Seti aAstros Continuum Subtraction to create pure Ha and Oiii. Next, I used PI's Combine HaandRGB script. Lastly, I created the social media card in APlogbook.com

https://preview.redd.it/rv9c5xk1uyzg1.png?width=1200&format=png&auto=webp&s=feaec071b15cc0bec3df6254b6851c088aa419ca

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u/Curious_Chipmunk100 — 6 days ago
▲ 10 r/seestar

Found out something new today that I had never thought about until now with the seestars.

I normally run three mono setups, and all my narrowband filters are 3nm. So 3nm is pretty tight. While the seestars LP filter is OIII 30nm / Hα 20nm, that's not great. As a matter of fact, pretty sloppy, but that's ok, we can fix that.

Look up on YouTube Seti Astros Continuum Subtraction. It takes the sloppy Ha image and subtracts all the wavelengths that are above and below 656.3nm. That is the wavelength of Ha. This gives you a pure Ha, not the 646.3nm to 666.3nm image.

For my mono images, I really don't need this function as I have 3nm filters, so my Ha is 654.8nm - 657.8nm. You're not really going to notice the difference between the pure Ha and the 3nm Ha, but with the seestrs you will.

For my S50, I will. I'll really look into this when doing narrowband Nebulae and Galaxies that contain Ha.

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u/Curious_Chipmunk100 — 8 days ago