M101 LRGB (old and new data mixed) (skyborg)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5457 · NGC 5477

M101 LRGB (old and new data mixed), skyborg

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M101 LRGB (old and new data mixed)

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M101 LRGB (old and new data mixed)

After some changes at my 6 inch newtonian (secondary mirror heating removed, spider adjusted, collimation, added motor focus and replaced L filter with CLS filter), I captured luminance frames of M101 again to see if my adjustments made the desired improvements. I could aquire 52 L frames at the beginning of May, which turned to be significantly sharper than the frames I captured in February and March.

Thanks to Tommy Navratil's great explanations how to combine sharp and unsharp frames (by chance he also captured M101), I could combine all the frames I made this year into this new image.

Maybe this is the maximum level of sharpness I can get out of my telescope. The only thing that not satisfies me is the color gradient in the two bright stars. I believe it is an artifact of the RGB data which I need to recapture sometime...

Original
B
Final
C

C

Title: Reprocessed 5yo data with current technologies

Uploaded: ...

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Status	Basic success
Started	...
Astrometry.net job	2087637
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M101 LRGB (old and new data mixed)

M101 LRGB (old and new data mixed)

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M101 LRGB (old and new data mixed)

M101 LRGB (old and new data mixed)

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C

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