M 101 - Pinwheel Galaxy - First mono image! (Mark F)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: HD122865 · M 101 · NGC 5447 · NGC 5449 · NGC 5450 · NGC 5451 · NGC 5453 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5462 · NGC 5471 · NGC 5477 · Pinwheel galaxy

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M 101 - Pinwheel Galaxy - First mono image!

Powered byPixInsight

M 101 - Pinwheel Galaxy - First mono image!

I've always wanted to see the Pinwheel Galaxy through a telescope. Many years back, tried to look through my 10 and 12 inch dobs and was not successful. So when I put an astrophotography setup together, this had to be one of my first targets.

This was my first image using a Mono CMOS camera and filters. Read about color vs mono imaging and how mono could be more suitable to light pollution. Also after seeing that programs like NINA and PixInsight simplified dealing with the added complexity, I decided to take the plunge and make the switch to mono.

To keep simple, I decided to go with commonly recommended gain of 76 / offset 50 and picked exposure times by keeping the median ADUs between all filters. Not sure if this approach makes much, ended up with different number of shots for blue.

Original
D
Final
E

D

Description: Second post-processing attempt, attempting to brighten the faint image. Ended up going overboard and looking over-processed.

Uploaded: ...

E

Description: Third post-processing attempt. Softened up levels and skipped deconvolution.

Uploaded: ...

NOVAC

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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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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	3480070
PixInsight job	XL1PKS1YWFWOEICBCDUQMHHODT8XZQ1C
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m20s.35
RA (top/left)	14h05m51s.16
RA (top/right)	14h05m21s.24
RA (bottom/right)	14h00m46s.33
RA (bottom/left)	14h01m22s.50

Dec (center)	+54°20′26″.9
Dec (top/left)	+53°53′38″.7
Dec (top/right)	+54°50′26″.10
Dec (bottom/right)	+54°47′03″.0
Dec (bottom/left)	+53°50′21″.3

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M 101 - Pinwheel Galaxy - First mono image!

M 101 - Pinwheel Galaxy - First mono image!

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M 101 - Pinwheel Galaxy - First mono image!

M 101 - Pinwheel Galaxy - First mono image!

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