M33 - Triangulum Galaxy (MSFFT)

Celestial hemisphere: Northern · Constellation: Triangulum (Tri) · Contains: HD9269 · HD9483 · HD9686 · IC 131 · IC 132 · IC 133 · IC 135 · IC 136 · IC 137 · IC 142 · IC 143 · M 33 · NGC 588 · NGC 592 · NGC 595 · NGC 598 · NGC 604 · Triangulum Galaxy · Triangulum Pinwheel

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M33 - Triangulum Galaxy

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M33 - Triangulum Galaxy

Revision B: approximately 102.3 hours of exposure of M33, the Triangulum Galaxy.
Revision A: approximately 36.5 hours of exposure.

Processing in Pixinsight using DBE, PCC, and stretched using ArcsinhStretch. Nonlinear processing using a touch of TGV Denoise, a curves transformation, SCNR to reduce green, and a final curve adjustment for color.

I'm pretty happy with the result, but there's still room for improvement. I really need to dig into my flat calibration since my initial integration/stack ends up bright around the edges. It might be light pollution but I'm leaning toward a flat fielding error since it's common in most of my stacks, seems to be independent of sky pointing, and is in each corner rather than a more linear gradient. Might also be light leaks during the darks, so I'll try to mitigate that as well.

This was originally my target for October but I was able to run up the hours in September when the new moon and some good sky transparency overlapped. With reasonable skies through October and marginally acceptable ones into November, I was able to just pour on some more hours. At a certain point, 100 hours became a goal in itself. Having reached that...I think I'll stick to maxing out around 30. There was some definite improvement in SNR and resolution but you really have to zoom in to find the differences.

Anyway, thanks for looking!

Original
Final
B

B

Description: 102.3 hours

Uploaded: ...

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Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	5202370
PixInsight job	3OLWC51TH8T3QOW7DNPM8TI32KT2ESO4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	01h33m52s.80
RA (top/left)	01h36m47s.83
RA (top/right)	01h36m50s.17
RA (bottom/right)	01h30m52s.78
RA (bottom/left)	01h30m57s.26

Dec (center)	+30°39′59″.3
Dec (top/left)	+29°45′36″.5
Dec (top/right)	+31°34′14″.8
Dec (bottom/right)	+31°34′00″.8
Dec (bottom/left)	+29°45′31″.8

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M33 - Triangulum Galaxy

M33 - Triangulum Galaxy

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Image Index:

Contribution Index (beta):

M33 - Triangulum Galaxy

M33 - Triangulum Galaxy

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

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