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Contains:  M 56, NGC 6779
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M56 Globular Cluster, 





    
        

            ashley
M56 Globular Cluster

M56 Globular Cluster

Technical card

Resolution: 2559x2047

Dates:Nov. 1, 2014

Frames: 146x9" ISO1600 24C

Integration: 0.4 hours

Darks: ~42

Flats: ~20

Bias: ~20

Avg. Moon age: 8.87 days

Avg. Moon phase: 65.56%

Bortle Dark-Sky Scale: 8.00

Temperature: 12.00

Astrometry.net job: 403460

RA center: 289.109 degrees

DEC center: 30.288 degrees

Pixel scale: 0.953 arcsec/pixel

Orientation: -97.574 degrees

Field radius: 0.434 degrees

Locations: Home Observatory, Tampa, Florida, United States

Description

Quick test of my new f/6.3 focal reducer. It's not entirely evident in this image, but there's a lot of vignetting when using it... which was helped by my flat frames—just not enough. The reason has something to do with my 1.25" T-Adapter. If I get a 2" one I should be fine... but then I won't be able to use my light pollution filter. I've done tons of research, but cannot find a 2" T-Adapter that accepts filters. And even if I did find one, I'd need to also probably find a 2" visual back. Sometimes this stuff can get rather confusing....

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Author

ashley
ashley
License: None (All rights reserved)
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M56 Globular Cluster, 





    
        

            ashley