Hemisphere:  Southern  ·  Contains:  NGC 3372  ·  eta Car nebula
Keyhole Nebula, 



    
        

            Barry Brook
Keyhole Nebula
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Keyhole Nebula

Technical card

Imaging telescopes or lenses: Celestron Nexstar 8SE SCT

Imaging cameras: Sony NEX-3 DSLR

Mounts: Celestron NexStar 6 SE and 8 SE Computerized Mount

Focal reducers: Celestron 0.63x Focal Reducer/Flattener

Software: DeepSky Stacker 3.3.4  ·  StarTools 1.3.5.286  ·  Paint.NET 4.0


Dates:May 21, 2014

Frames:
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


Basic astrometry details

Astrometry.net job: 289386

RA center: 10h 44' 42"

DEC center: -59° 38' 2"

Orientation: -102.849 degrees

Field radius: 0.364 degrees


Resolution: 620x454

Description

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.

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Author

Amaranthus
Barry Brook
License: Attribution Creative Commons
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Keyhole Nebula, 



    
        

            Barry Brook