NGC5350 and Friends (WIP) (Jon Rista)

NGC5350 and Friends (WIP)

Here it is, my sole Galaxy Season 2017 image: NGC5350 and it's friends (many, many, many friends!) The weather has been so bad this season that this is the only galaxy image I've been able to create. I have only had a couple of clear nights since the beginning of March this year, and so far this is the result.

At the moment, I only have the luminance data. I had a flat frames mishap, my imaging train rotated slightly as I was setting my scope up to take flats. That resulted in a bunch of embossed dust motes which took an extensive amount of processing with DBE (most samples I've ever used, by a long shot!) to correct the issue without messing up all of the very faint galaxy details (of which there are countless numbers in this image).

The processing so far is very, very basic: pre-processing (calibrate, register, integrate), DBE (couple of hours worth, new technique for fixing empty galaxy fields), and a basic stretch. No NR, no HDR, no other processing of any kind.

I've included an annotated version that covers all the major object catalogs, namely NGC and PGC, and also identifies all the objects between 18.5-19.5mag...many of the faint background galaxies do indeed get down to 19.5mag/sq". The faintest galaxy I found was over 21mag/sq", which for data acquired under ~18.2mag/sq" skies, is not too bad at all!

Total integration is 413x30s L subs, ASI1600MM-Cool @ Gain 76/15, after culling over 80 subs due to less than ideal tracking or tracking issues, and with the tightest sigma rejection I could manage without over-rejecting good signal (which also helped with some of the flat issues).

Original
B
C
Final
D

B

Description: Annotated version showing faint objects down to 19.5 mag

Uploaded: ...

C

Description: Optimized Luminance (Juan C method) + TGV

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D

Description: LRGB

Uploaded: ...

Cloudy Nights
ZWO ASI1600MM/QHY163M
Central USA

5 - Deep Sky Objects (DSO)
6 - Galaxies

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Status	Basic success
Started	...
Astrometry.net job	1603087
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC5350 and Friends (WIP)

NGC5350 and Friends (WIP)

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