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Contains:  NGC 4651, NGC4651, Umbrella Galaxy
Getting plate-solving status, please wait...
A near futile attempt at the umbrella galaxy, 


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A near futile attempt at the umbrella galaxy

Technical card

Dates:June 7, 2019March 20, 2020March 21, 2020

7x240" bin 2x2
17x300" bin 2x2
30x180" (gain: 139.00) -20C bin 2x2

Integration: 3.4 hours

Darks: ~25

Flats: ~25

Bias: ~100

Avg. Moon age: 19.12 days

Avg. Moon phase: 13.70%

Bortle Dark-Sky Scale: 6.00

Temperature: -6.00 job: 3353634

RA center: 12h 43' 50"

DEC center: +16° 22' 47"

Pixel scale: 1.082 arcsec/pixel

Orientation: 6.081 degrees

Field radius: 0.273 degrees

Resolution: 1540x964

Locations: Remote site 4, St Alexandre, Quebec, Canada

Data source: Traveller


My first subs of this target were aimed at resolving properly the galaxy's core while my second set was to pull out the umbrella part.
Integrating both set of frames proved more a challenge than I imagined.
Safe to say that I need at least 2-3x the integration data to pull this one off.



License: None (All rights reserved)

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A near futile attempt at the umbrella galaxy,