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Contains:  IC4278, M 51, M51, NGC 5194, NGC 5195, NGC5195, Whirlpool galaxy
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a noisy 232 60 secs unguided exposure on m51 with RC8 at f8, 



    
        

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

Imaging telescopes or lenses: GSO RC8

Imaging cameras: QHYCCD QHY5 III 174 cooled

Mounts: GPD2

Software: Astroart

Filters: Tecnosky UHC 2"


Dates:Feb. 18, 2017

Frames: 232x60"

Integration: 3.9 hours

Avg. Moon age: 21.86 days

Avg. Moon phase: 53.03%


Astrometry.net job: 2594400

RA center: 13h 29' 54"

DEC center: +47° 11' 37"

Pixel scale: 0.746 arcsec/pixel

Orientation: -115.628 degrees

Field radius: 0.227 degrees


Resolution: 1880x1127

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.

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Author

astrociap
Stefano Ciapetti
License: None (All rights reserved)
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a noisy 232 60 secs unguided exposure on m51 with RC8 at f8, 



    
        

            Stefano Ciapetti

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Imagers of Italy