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NGC4921

Technical card

Imaging telescope or lens: Hubble Space Telescope

Imaging camera: Advanced Camera for Surveys

Guiding telescope or lens: Hubble Space Telescope

Resolution: 3984x3392

Dates: Dec. 17, 2006Jan. 11, 2007

Frames:
F606W: 10x1245"
F814W: 10x1245"

Integration: 6.9 hours

Avg. Moon age: 23.88 days

Avg. Moon phase: 33.94%

Bortle Dark-Sky Scale: 1.00

Description

Note
The original frames from the Hubble have a discontinuity in the ACS.
For fixing it, I took the 2 parts and make them very near one to each other. Finally I have lowered the differences between their edges on PS.

Roberto

Comments

Roberto Colombari
License: None (All rights reserved) Nov. 25, 2013
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Histogram

NGC4921, Roberto Colombari