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Contains:  M 3, NGC 5272
Getting plate-solving status, please wait...
Messier 3, 





    
        

            Michael Feigenbaum
Messier 3

Messier 3

Technical card

Resolution: 3672x2986

Dates:April 23, 2019April 24, 2019April 26, 2019

Frames:
Astronomik Blue 1.25": 45x120" (gain: 139.00) -15C
Astronomik Green 1.25" CCD Filter: 45x120" (gain: 139.00) -15C
Astronomik Luminance (1.25"): 60x120" (gain: 139.00) -5C
Astronomik Red 1.25": 49x120" (gain: 139.00) -15C

Integration: 6.6 hours

Darks: ~43

Flats: ~50

Bias: ~500

Avg. Moon age: 20.21 days

Avg. Moon phase: 69.48%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 2740651

RA center: 13h 42' 10"

DEC center: +28° 22' 48"

Pixel scale: 0.973 arcsec/pixel

Orientation: 49.454 degrees

Field radius: 0.640

Locations: Papago Butte, near Maricopa, AZ, United States

Data source: Backyard

Description

M3 Globular Cluster.... Familiar to most. Learning more about channel combination with this project. I think I may have made a step forward in that regard.

I did have some difficulty with gradients in this image. I have a neighbor, who is about 200m from my work station who has a one million watt yard light (lol) on a motion sensor that is causing me problems when it shines directly on my equipment. I had to do the luminence integration set 3-times to cull 60 good frames from the sets.

I opted to play with this a good bit in the staging area before publishing it. There is a full size image (not cropped) that I like as well but I had to make a decision between the two.

Comments and criticism welcome as always!

CS,
Mike

Comments

Author

MikeF29
Michael Feigenbaum
License: None (All rights reserved)
2395
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Revisions

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            Michael Feigenbaum
    Original
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  • Final
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            Michael Feigenbaum
    Q

O

Re-processed yet again...

P

final....

Q

completely reprocessed using recently learned techniques. I went with the full crop on this because I really like the little spiral galaxy at the top right. That's it for this one until next year, maybe...

Sky plot

Sky plot

Histogram

Messier 3, 





    
        

            Michael Feigenbaum

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Cloudy Nights
Fast Newtonians