M74 (Andrew Burwell)

Celestial hemisphere: Northern · Constellation: Pisces (Psc) · Contains: M 74 · NGC 628 · PGC 138411 · PGC 138413 · PGC 138420 · PGC 138421 · PGC 1484840 · PGC 1488343 · PGC 1489730 · PGC 1494837

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M74

Link: https://www.macobservatory.com

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M74

Link: https://www.macobservatory.com

I really struggle with broadband targets from light polluted skies. Plus, we have a ton of humidity in the atmosphere, which often limits seeing. There's not a lot of good detail close up, but I did my best with the color of the galaxy. I processed the galaxy and stars separately, and the stars leave a little to be desired. If I try to bring out more color in the stars there's terrible CA on them, and this likely has to do with the Edge Reducer so far as I can tell. I might try to shoot some at native focal length and take out the reducer to see how the telescope performs.

I also finally got around to adjusting tilt on this sensor, and I have it down to 1% tilt across the frame which is pretty good. This being an APSc sized sensor means curvature begins to show up towards the widest edges of the frame. It's certainly not a flat field, and if I crop it square, it does remove any visible curvature, but I like to use as much of the whole image as possible so this is a full sized APSc image, only cropping out the overlap from dithering. APSc is likely the largest usable sensor for this telescope, and I'm thinking a 4/3 sensor is probably a better choice if you want all your stars perfect.

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	5197556
PixInsight job	83B841TJILGB44ROSMUC362UY5SF0CVS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	01h36m41s.78
RA (top/left)	01h35m20s.90
RA (top/right)	01h35m38s.15
RA (bottom/right)	01h38m03s.20
RA (bottom/left)	01h37m45s.71

Dec (center)	+15°47′17″.6
Dec (top/left)	+16°12′07″.4
Dec (top/right)	+15°19′35″.9
Dec (bottom/right)	+15°22′28″.7
Dec (bottom/left)	+16°14′58″.9

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