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Contains:  eta Car nebula, NGC 3372
Getting plate-solving status, please wait...
Keyhole Nebula, 


            Barry Brook
Keyhole Nebula

Keyhole Nebula

Technical card

Resolution: 1296x948

Dates:May 21, 2014

150x10" ISO1600
50x30" ISO1600

Integration: 0.8 hours

Darks: ~25

Flats: ~25

Bias: ~100

Avg. Moon age: 22.09 days

Avg. Moon phase: 50.60%

Bortle Dark-Sky Scale: 6.00

Mean FWHM: 5.75

Temperature: 16.00 job: 289386

RA center: 161.179 degrees

DEC center: -59.634 degrees

Orientation: -102.849 degrees

Field radius: 0.364 degrees


Part of the great southern nebula surrounding Eta Carina, imaged from suburban Adelaide.

Unguided and taken from an single arm alt-az SE mount, so the result of the integration of many short subs.



Barry Brook
License: Attribution Creative Commons

Sky plot

Sky plot


Keyhole Nebula, 


            Barry Brook