NGC 3628 (Tom Gray)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: HD98388 · IC 2745 · NGC 3628

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NGC 3628

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NGC 3628

My final image of January, and third member of the ‘Leo triplet’ comprises just under an hour of integration using 2m subs. NGC 3628 demands much longer integration and deeper exposures to tease out the fine detail, subtle colour, and faint star stream that grace this DSO - I look forward ‘with relish’ to having another go at the ‘hamburger’ galaxy.

Seeing improved as the night progressed, providing reasonable conditions for imaging at f3.3. I used a small dither in PHD2 to reduce noise, and applied flats and darks to the RAW data, which was binned 2x2. Further reduction in image scale by 50% in Startools helped improve image quality. The stretched data had a strong green tint, despite demosaicing the RAW data, so I pushed up the red channel to mask this. Final noise reduction was completed in Nebulosity 4.

A number of smaller galaxies can be seen in the background, most obvious is IC 2745 lower left. As ever, I value your feedback and comments.

Schmidt-Cassegrain Telescope (SCT) Imagers
Altair Astro 183 M/C Hypercams
UK Astro-Imaging
Low-Cost Astrophotography

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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.

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Status	Advanced success
Started	...
Astrometry.net job	5453779
PixInsight job	U9YYDO9HBPREH5I3VO6MGSB2OQTV0XZF
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h20m14s.20
RA (top/left)	11h21m45s.66
RA (top/right)	11h18m38s.78
RA (bottom/right)	11h18m42s.18
RA (bottom/left)	11h21m49s.16

Dec (center)	+13°33′39″.4
Dec (top/left)	+13°49′19″.8
Dec (top/right)	+13°48′06″.4
Dec (bottom/right)	+13°17′55″.2
Dec (bottom/left)	+13°19′10″.3

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NGC 3628

NGC 3628

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NGC 3628

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