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Contains:  NGC 5985, NGC 5982, NGC 5981
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Draco Triplet - NGC 5985 / 5982 / 5981 - LRGB - EdgeHD 9.25 - ASI1600MM, 





    
        

            Rowland Archer
Draco Triplet - NGC 5985 / 5982 / 5981 - LRGB - EdgeHD 9.25 - ASI1600MM

Draco Triplet - NGC 5985 / 5982 / 5981 - LRGB - EdgeHD 9.25 - ASI1600MM

Technical card

Resolution: 1920x1079

Dates:July 2, 2018July 4, 2018July 8, 2018

Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 62x60" (gain: 139.00) -15C bin 1x1
Astrodon E-Series Tru-Balance [Lum]: 192x30" (gain: 139.00) -15C bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 83x60" (gain: 139.00) -15C bin 1x1
Astrodon Red Tru-Balance E-Series Gen 2: 55x60" (gain: 139.00) -15C bin 1x1

Integration: 4.9 hours

Darks: ~25

Flats: ~25

Bias: ~100

Avg. Moon age: 21.12 days

Avg. Moon phase: 59.89%

Bortle Dark-Sky Scale: 5.00

Astrometry.net job: 2358756

RA center: 234.668 degrees

DEC center: 59.354 degrees

Pixel scale: 0.773 arcsec/pixel

Orientation: 359.989 degrees

Field radius: 0.236 degrees

Locations: Home Observatory, Wake Forest, NC, United States

Data source: Backyard

Description

What a cool galaxy lineup as viewed here from Terra Firma! It's almost like a page out of textbook: "and on the left, we have a face-on view of a spiral galaxy, NGC 5985. Next is an elliptical, NGC 5982. And finally on the right, an edge-on view of NGC 5981."

I took these exposures over the summer of 2018, starting in early July and ending in late August.

399 light frames, but only 4.9 hours with the short CMOS exposure times. It would be interesting to see how much I could improve the SNR with more data. Shooting LRGB in this orange zone is "just good enough" but would also be interesting to see this with data from a darker sky.

C&C always welcome :-) !

Rowland

Comments

Author

Vassar1976
Rowland Archer
License: None (All rights reserved)
1232
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Draco Triplet - NGC 5985 / 5982 / 5981 - LRGB - EdgeHD 9.25 - ASI1600MM, 





    
        

            Rowland Archer

In these public groups

ZWO ASI1600MM/QHY163M