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Contains:  Crescent nebula, NGC 6888
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Crescent Nebula NGC 6888, 



    
        

            Mat
Crescent Nebula NGC 6888
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Crescent Nebula NGC 6888

Technical card

Imaging telescopes or lenses:Celestron C9.25 Starbright XLT

Imaging cameras:Canon EOS 6D

Mounts:Sky-Watcher EQ6-R Pro

Guiding telescopes or lenses:Lacerta MGEN2-Autoguider with 9x50 Finder Scope

Software:GIMP 2.10.4Luc Coiffier's DSS


Dates:July 5, 2019

Frames: 17x180"

Integration: 0.8 hours

Avg. Moon age: 3.04 days

Avg. Moon phase: 10.10%


Basic astrometry details

Astrometry.net job: 2781706

RA center: 20h 12' 10"

DEC center: +38° 21' 36"

Pixel scale: 0.635 arcsec/pixel

Orientation: 1.721 degrees

Field radius: 0.407 degrees


Resolution: 3866x2533

Locations: Field, Bad Pirawarth, Lower Austria, Austria

Data source: Traveller

Description

Short exposure of the crescent while testing my new dual exposure setup with a 72/432 photo refractor mounted piggy-back on the C9.25 - the idea was to use precious guiding time for two objects in parallel.

This view of NGC 6888 is at f10 and cropped to one half - and it would clearly need more exposure (see artifacts when stretching) or use of the F6.3 reducer, but I started late and forgot mounting the reducer (and dawn is breaking fast in summer...).

Comments

Author

Astromat
Mat
License: Attribution-NonCommercial-ShareAlike Creative Commons
510
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Revisions

  • Crescent Nebula NGC 6888, 



    
        

            Mat
    Original
  • Final
    Crescent Nebula NGC 6888, 



    
        

            Mat
    B

B

Description: Restacked and reprocessed

Sky plot

Sky plot

Histogram

Crescent Nebula NGC 6888, 



    
        

            Mat