Leo Triplet (RGB) (Linda)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: IC 2745 · Leo Triplet · M 65 · M 66 · NGC 3623 · NGC 3627 · NGC 3628

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Leo Triplet (RGB)

Link: https://lindasastronomyadventures.space/2020/06/22/leo-triplet/

Powered byPixInsight

Leo Triplet (RGB)

Link: https://lindasastronomyadventures.space/2020/06/22/leo-triplet/

I started this project in April 2020 and was forced to end it in mid-June. The spring has been very cloudy and rainy and clear nights have been few. My goal was to get 8 hours per filter and in my naive belief that I had plenty of time, I concentrated on one filter at a time. Now, the Triplet is going behind a tree less than half an hour after true darkness and I'm not likely to get enough additional data to really make a difference. As a result I ended up with my goal of 8 hours only in green. But, in an effort to get in at least some of the remaining channels, I have only 70 and 90 minutes each of red and blue.

As a result, I wasn't sure whether I'd be able to cope with the noise appropriately but mure denoise is a marvelous tool! This is a very basic processing.

For each red, green and blue master:

Dynamic Crop

Mure Denoise

Dynamic Background Extraction

For the RGB:

Channel Combination

Photometric Color Calibration

Histogram Transformation

Curves Transformation (saturation)

And that's it. Mure Denoise left the backgrounds looking horrendous which limited the amount of stretching I could do and I didn't feel compelled or capable of doing anything more sophisiticated. Overall, I was pretty happy with the compromise result.

Original
B
C
Final
D

B

Description: Did a small amount of star shrinkage.

Uploaded: ...

C

Description: Brought the levels up on ngc 3628 a bit and ran sharpening.

Uploaded: ...

D

Description: ran scnr

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	3618643
PixInsight job	B2U3HHOFSIP7JQSDD5WAEHXHN5MUENPH
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	11h19m49s.17
RA (top/left)	11h17m46s.53
RA (top/right)	11h21m52s.30
RA (bottom/right)	11h21m52s.37
RA (bottom/left)	11h17m45s.79

Dec (center)	+13°16′56″.4
Dec (top/left)	+12°46′13″.4
Dec (top/right)	+12°46′16″.6
Dec (bottom/right)	+13°47′35″.4
Dec (bottom/left)	+13°47′32″.5

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Leo Triplet (RGB)

Leo Triplet (RGB)

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Image Index:

Contribution Index (beta):

Leo Triplet (RGB)

Leo Triplet (RGB)

Equipment

Acquisition details

Description

Comments

Revisions

B

C

D

Sky plot

Histogram

In these public groups

In these collections

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