Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  IC 4336  ·  NGC 5326  ·  NGC 5350  ·  NGC 5353  ·  NGC 5354  ·  NGC 5362  ·  NGC 5371
Getting plate-solving status, please wait...
NGC5350 and Friends (WIP), 



    
        

            Jon Rista
NGC5350 and Friends (WIP)
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NGC5350 and Friends (WIP)

Getting plate-solving status, please wait...
NGC5350 and Friends (WIP), 



    
        

            Jon Rista
NGC5350 and Friends (WIP)
Powered byPixInsight

NGC5350 and Friends (WIP)

Equipment

Imaging Telescopes Or Lenses
Canon EF 600mm f/4 L II
Imaging Cameras
ZWO Optical ASI1600MM-Cool
Filters
Astrodon E-series Generation 2 1.25" R · Astrodon E-series Generation 2 1.25" G · Astrodon E-series Generation 2 1.25" B · Astrodon E-seriels Generation 2 1.25" L
Accessories
Atik Electronic Filter Wheel EFW2
Software
PixInsight PixInsinght · Sequence Generator Pro
Guiding Telescopes Or Lenses
Orion 50mm guidescope
Guiding Cameras
QHY5L-II Mono

Acquisition details

Dates:
May 14, 2017 ·  May 30, 2017
Frames:
Astrodon E-seriels Generation 2 1.25" L: 413x30" (3h 26' 30") (gain: 76.00) -20C bin 1x1
Astrodon E-series Generation 2 1.25" B: 109x60" (1h 49') (gain: 76.00) -20C bin 1x1
Astrodon E-series Generation 2 1.25" G: 106x60" (1h 46') (gain: 76.00) -20C bin 1x1
Astrodon E-series Generation 2 1.25" R: 106x90" (2h 39') (gain: 76.00) -20C bin 1x1
Integration:
9h 40' 30"
Darks:
25
Flats:
36
Bias:
100
Avg. Moon age:
11.65 days
Avg. Moon phase:
58.67%
Bortle Dark-Sky Scale:
7.00
Mean SQM:
18.14

Basic astrometry details

Astrometry.net job: 1603087

RA center: 13h53m14s.6

DEC center: +40°2642

Pixel scale: 1.338 arcsec/pixel

Orientation: 82.078 degrees

Field radius: 1.020 degrees

Resolution: 1824x1313

Locations: Aurora South Backyard, Aurora, Colorado, United States

Description

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).

Comments

Revisions

  • NGC5350 and Friends (WIP), 



    
        

            Jon Rista
    Original
  • NGC5350 and Friends (WIP), 



    
        

            Jon Rista
    B
  • NGC5350 and Friends (WIP), 



    
        

            Jon Rista
    C
  • Final
    NGC5350 and Friends (WIP), 



    
        

            Jon Rista
    D

B

Description: Annotated version showing faint objects down to 19.5 mag

Uploaded: ...

C

Description: Optimized Luminance (Juan C method) + TGV

Uploaded: ...

D

Description: LRGB

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC5350 and Friends (WIP), 



    
        

            Jon Rista