Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  NGC 891, NGC 898, NGC 906
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"

Integration: 5.0 hours

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

Author

Vassar1976
Rowland Archer
License: None (All rights reserved)
1630
Like

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

C

Description: Lightened with Curves

Sky plot

Sky plot

Histogram

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



    
        

            Rowland Archer

In these public groups

ZWO ASI1600MM/QHY163M