Updated M33 - Triangulum Galaxy - in RGB with Ha highlights (gmvtex)

Celestial hemisphere: Northern · Constellation: Triangulum (Tri) · Contains: M 33 · NGC 595 · NGC 598 · NGC 604 · Triangulum Galaxy · Triangulum Pinwheel

Updated M33 - Triangulum Galaxy - in RGB with Ha highlights, gmvtex

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Updated M33 - Triangulum Galaxy - in RGB with Ha highlights

Powered byPixInsight

Updated M33 - Triangulum Galaxy - in RGB with Ha highlights

This is an extended capture of M33, the Triangulum galaxy. I purposely took many (55) R, G, and B exposures of 180sec each over several nights to try to bring more color and more definition to this typically very fuzzy galaxy. I used a 130 APO refractor with a reducer, filter wheel and monochrome (35mm) full frame CMOS astro camera. Compared to previous attempts, and even without Ha input, it did bring out more color in the galaxy, although it's still relatively hazy. A tough target, in my opinion, even though it's relatively bright. I took a relatively large number of Ha frames, though I did not use them in the first image and used curves to increase saturation. In the subsequent versions, I added a mild level of Ha to the Red channel which produced discrete, but pleasing to my eye, little red jewels in the galaxy arms and allowed me to be more judicious with saturation for the rest of the image and produce a more natural result. The last version is a closeup which highlights some of the details of the galaxy.

Original
B
C
D
Final
F

B

Description: Added Ha to augment Red channel.

Uploaded: ...

C

Description: Adjusted in Photoshop.

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D

Description: Neutralized background.

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F

Description: Cropped and levels adjustment applied.

Uploaded: ...

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Status	Basic success
Started	...
Astrometry.net job	4093321
PixInsight job	n/a
PixInsight queue size	n/a
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Updated M33 - Triangulum Galaxy - in RGB with Ha highlights

Updated M33 - Triangulum Galaxy - in RGB with Ha highlights

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Updated M33 - Triangulum Galaxy - in RGB with Ha highlights

Updated M33 - Triangulum Galaxy - in RGB with Ha highlights

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Comments

Revisions

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C

D

F

Sky plot

Histogram

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