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Contains:  NGC 4479, NGC 4477, NGC 4474, NGC 4473, NGC 4461, NGC 4459, NGC 4458, NGC 4438, The Eyes, NGC 4435, NGC 4425, M 86, NGC 4406, NGC 4402, NGC 4388, NGC 4387, M 84, NGC 4374
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A portion of Markarian's Chain LRGB, 





    
        

            Michael Feigenbaum
A portion of Markarian's Chain LRGB

A portion of Markarian's Chain LRGB

Technical card

Resolution: 4040x3132

Dates:April 12, 2019April 13, 2019April 14, 2019

Frames:
Baader UV/IR-Cut/L Filter: 152x120" (gain: 139.00) -15C
Astronomik Blue 1.25": 65x120" (gain: 139.00) -15C
Astronomik Green 1.25" CCD Filter: 60x120" (gain: 139.00) -15C
Astronomik Red 1.25": 90x120" (gain: 139.00) -15C

Integration: 12.2 hours

Darks: ~50

Flats: ~50

Bias: ~500

Avg. Moon age: 8.15 days

Avg. Moon phase: 57.99%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 2653656

RA center: 186.832 degrees

DEC center: 13.385 degrees

Pixel scale: 1.447 arcsec/pixel

Orientation: 13.843 degrees

Field radius: 1.027 degrees

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

Data source: Backyard

Description

I have added the RGB to the previously published Luminance image I did.

There was a battle going on with the moon but I think I came out OK, just a few scrapes and bruises... I've got some artifacts in my stars that primarily affect the color, i.e. I see a color gradient actually within individual stars. I think this is somehow related to a mistake I am making when using the "Star Alignment" tool in PI. I will figure it out...

Will definitely revisit this one next year...

Comment and criticisms always welcome.
CS!!
Mike

Comments

Author

MikeF29
Michael Feigenbaum
License: None (All rights reserved)
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A portion of Markarian's Chain LRGB, 





    
        

            Michael Feigenbaum

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