Hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  NGC 891  ·  NGC 898  ·  NGC 906
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NGC 891 Outer Limits Galaxy - LRGB - Esprit 120 - ASI1600MM, 



    
        

            Rowland Archer
NGC 891 Outer Limits Galaxy - LRGB - Esprit 120 - ASI1600MM
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NGC 891 Outer Limits Galaxy - LRGB - Esprit 120 - ASI1600MM

Getting plate-solving status, please wait...
NGC 891 Outer Limits Galaxy - LRGB - Esprit 120 - ASI1600MM, 



    
        

            Rowland Archer
NGC 891 Outer Limits Galaxy - LRGB - Esprit 120 - ASI1600MM
Powered byPixInsight

NGC 891 Outer Limits Galaxy - LRGB - Esprit 120 - ASI1600MM

Technical card

Imaging telescopes or lenses: Sky-Watcher Esprit 120

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: Paramount MyT

Guiding telescopes or lenses: Orion StarShoot Autoguider

Guiding cameras: Orion Starshoot Autoguider Pro

Focal reducers: Sky-Watcher Field Flattener Esprit 120

Software: PHD2  ·  Astro Pixel Processor  ·  PixInsight 1.8 Ripley  ·  Main Sequence Software SequenceGeneratorPro

Filters: Astrodon Red Tru-Balance E-Series Gen 2  ·  Astrodon Green Tru-Balance E-Series Gen 2  ·  Astrodon E-Series Tru-Balance [Lum]  ·  Astrodon Blue Tru-Balance E-Series Gen 2

Accessory: ZWO 8x 1.25" EFW


Dates:Dec. 14, 2017

Frames: 300x60" (5h)

Integration: 5h

Avg. Moon age: 26.12 days

Avg. Moon phase: 12.57%


Basic astrometry details

Astrometry.net job: 1974857

RA center: 2h 22' 53"

DEC center: +42° 29' 42"

Pixel scale: 0.912 arcsec/pixel

Orientation: 284.043 degrees

Field radius: 0.713 degrees


Resolution: 4503x3384

Locations: Home Observatory, Wake Forest, NC, United States

Data source: Backyard

Description

I took these frames around mid-December 2017. I shot 500 L's and 100 each of R, G and B. Clouds interfered with about 150 of the L's, and when I integrated the remaining L's, I didn't think the result was as good as a synthetic L extracted from the RGB integration, so I used that instead.

What I like about this image: nice range of star colors, the dust lanes in NGC 891, and quite a few interesting smaller galaxies - I count about 20.

Improvements needed: stars a bit oblong if you pixel peep (probably guiding), background a bit mottled (need more data to smooth it out).

Overall, I'm glad I can get enough LRGB data from my front-yard pier to make LRGB imaging fun! Local skies measure 19.77 SQM with my iPhone app.

Comments and critiques always welcome!

Rowladn

Comments

Revisions

  • NGC 891 Outer Limits Galaxy - LRGB - Esprit 120 - ASI1600MM, 



    
        

            Rowland Archer
    Original
  • NGC 891 Outer Limits Galaxy - LRGB - Esprit 120 - ASI1600MM, 



    
        

            Rowland Archer
    B
  • Final
    NGC 891 Outer Limits Galaxy - LRGB - Esprit 120 - ASI1600MM, 



    
        

            Rowland Archer
    C

B

Description: Prior to ON1 filter

Uploaded: ...

C

Description: Lightened with Curves

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 891 Outer Limits Galaxy - LRGB - Esprit 120 - ASI1600MM, 



    
        

            Rowland Archer

In these public groups

ZWO ASI1600MM/QHY163M