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Contains:  NGC 5195, Whirlpool galaxy, M 51, NGC 5194
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a noisy 232 60 secs unguided exposure on m51 with RC8 at f8, 





    
        

            Stefano Ciapetti
a noisy 232 60 secs unguided exposure on m51 with RC8 at f8

a noisy 232 60 secs unguided exposure on m51 with RC8 at f8

Technical card

Imaging telescope or lens:GSO RC8

Imaging camera:QHY5 III 174 cooled

Mount:GPD2

Software:Astroart

Filter:Tecnosky UHC 2"

Resolution: 1880x1127

Dates:Feb. 18, 2017

Frames: 232x60"

Integration: 3.9 hours

Avg. Moon age: 21.86 days

Avg. Moon phase: 53.03%

Astrometry.net job: 2593788

RA center: 202.476 degrees

DEC center: 47.194 degrees

Pixel scale: 0.746 arcsec/pixel

Orientation: 244.275 degrees

Field radius: 0.227 degrees

Locations: Prato - S.Lucia Home Terrace Observatory, Prato, Prato, Italy

Data source: Backyard

Description

Reprocessed an image of 2017. 232 60 secs unguided exposures done with an RC8 at full focal length, a QHY174 mono, on top of a GPD2. Image was very noisy. It was one of my first time using the QHY174 and didn't manage correctly the cooling. Also no darks was used (which are mandatory for this kind of camera). Acquisition and processing with Astroart. Cosmetic with Photoshop.
Thanks for looking.

Comments

Author

astrociap
Stefano Ciapetti
License: None (All rights reserved)
1810
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Revisions

  • a noisy 232 60 secs unguided exposure on m51 with RC8 at f8, 





    
        

            Stefano Ciapetti
    Original
  • Final
    a noisy 232 60 secs unguided exposure on m51 with RC8 at f8, 





    
        

            Stefano Ciapetti
    B

B

some more light

Sky plot

Sky plot

Histogram

a noisy 232 60 secs unguided exposure on m51 with RC8 at f8, 





    
        

            Stefano Ciapetti

In these public groups

Imagers of Italy