Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  IC 4263  ·  IC 4278  ·  M 51  ·  NGC 5169  ·  NGC 5173  ·  NGC 5194  ·  NGC 5195  ·  NGC 5198  ·  Whirlpool galaxy
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Whirlpool Galaxy (M51) - RASA 11", 



    
        

            Dan Gallo
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Whirlpool Galaxy (M51) - RASA 11"

Getting plate-solving status, please wait...
Whirlpool Galaxy (M51) - RASA 11", 



    
        

            Dan Gallo
Powered byPixInsight

Whirlpool Galaxy (M51) - RASA 11"

Imaging telescopes or lenses: Celestron Rowe-Ackermann Schmidt Astrograph 11"

Imaging cameras: ZWO ASI294MC Pro

Mounts: Losmandy G11 Gemini 2

Software: Sequence Generator Pro  ·  Lightroom  ·  PixInsight

Filters: L-Pro 2"


Dates:May 2, 2019

Frames:L-Pro 2": 60x60" (1h) (gain: 120.00) -15C bin 1x1

Integration: 1h

Darks: 100

Flats: 100

Bias: 100

Avg. Moon age: 27.17 days

Avg. Moon phase: 6.20%

Bortle Dark-Sky Scale: 7.00


Astrometry.net job: 3251044

RA center: 13h 29' 53"

DEC center: +47° 12' 40"

Pixel scale: 1.544 arcsec/pixel

Orientation: -38.519 degrees

Field radius: 0.960 degrees


Resolution: 3745x2462

Locations: Home, Foster City, California, United States

Data source: Backyard

Description

First light with my new RASA 11". Really impressed with it so far, and how well it seemed to hold focus through the imaging session, and smaller/sharper stars versus the HyperStar setup I had before. Some slight diffraction spikes, due to not properly routing the cables. Certainly a big and heavy scope to lift on to the mount (I have to setup each time!)

I had quite an obvious blue gradient on the lower left corner which DBE in PixInsight couldn't fix easily (think I need to work on my flats), so I just used Lightroom to apply a graduated filter to lower the black level and saturation on that corner of the image, which helped.

I like how I managed to capture some smaller (more distant) galaxies in the lower right corner of this image.

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Whirlpool Galaxy (M51) - RASA 11", 



    
        

            Dan Gallo