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Contains:  NGC 6946, NGC 6939
Getting plate-solving status, please wait...
NGC 6946 Fireworks Galaxy  - without guiding, 





    
        

            Robert Eder
NGC 6946 Fireworks Galaxy  - without guiding

NGC 6946 Fireworks Galaxy - without guiding

Technical card

Resolution: 2500x1753

Dates:Aug. 24, 2017

Frames: 12x180" ISO1600

Integration: 0.6 hours

Darks: ~10

Avg. Moon age: 2.85 days

Avg. Moon phase: 8.92%

Bortle Dark-Sky Scale: 5.00

Astrometry.net job: 1757963

RA center: 308.461 degrees

DEC center: 60.409 degrees

Pixel scale: 1.833 arcsec/pixel

Orientation: 278.846 degrees

Field radius: 0.777 degrees

Locations: Sofienalpe, Vienna, Austria

Data source: Traveller

Description

This night I made a polar alignment with Sharpcap Pro of 0,01 on both axes. I thought "wow" if the alignment is that good lets try to run it without autoguiding, just for fun. 12 out of 18 images were perfect, which is not bad for a 3min exposure.
The galaxy is smaller than I thought, but this way I could frame it together with the star cluster 🙂

Comments

Author

Robsi
Robert Eder
License: None (All rights reserved)
5241
Like

Revisions

  • NGC 6946 Fireworks Galaxy  - without guiding, 





    
        

            Robert Eder
    Original
  • Final
    NGC 6946 Fireworks Galaxy  - without guiding, 





    
        

            Robert Eder
    B

B

In the process of background extraction I had removed too much of the nebulosity from the galaxy. I improved my technique and it's much better now.

Sky plot

Sky plot

Histogram

NGC 6946 Fireworks Galaxy  - without guiding, 





    
        

            Robert Eder