NGC2392, also known as the “Eskimo Nebula” (sometimes referred to as the “Clownface Nebula”, although not common) is a small planetary nebula in the constellation Gemini.
It is estimated to be only about 1000 years old.

It is a bright planetary nebula at mag 10.1, and is therefore also visible in relatively small telescopes.
The distance to NGC2392 is about 2.900 light-years.

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Image data

Object info
Name NGC2392 – The Eskimo Nebula
Type Planetary nebula
Constellation Gemini
Right ascension 07h 29m 10s
Declination +20° 54′ 42″
Distance 2.900 ly
Other designations Caldwell 39
Image info
Image date Dec. 26, 2008
Light frames 30x 3 min. @ ISO800 – IDAS LPS-P2
Total integration 1h 30m
Dark frames 40x
Flat frames 25x
Bias frames 20x
Software used DSLRFocus, Pixinsight LE, ImagesPlus, Photoshop CS2
Processing DSLRFocus was used for focussing. All separate frames were calibrated, aligned and stacked in ImagesPlus 2.8.
“Dynamic Background Extraction” (DBE) was done in PixInsight. Photoshop CS2 was used for further processing, curves adjustment, levels adjustment,etc.
Equipment info
Telescope Orion Optics SPX 10″ Newton
Corrector Televue 2″ Paracorr coma corrector (FL: 1.380mm f/5.43)
Mount Losmandy G-11
Camera Canon 20D
Guide camera Atik 1HS Mono
Guide scope Vixen VMC110L
Autoguide software Guidemaster
Filters 2″ IDAS LPS-P2
Location Landgraaf, The Netherlands
Image comments

Exposure time of the individual frames had to be kept short in order to not overexpose this relatively bright planetary nebula.