Hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  IC 443  ·  The star Propus (ηGem)
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ic443 - JellyFish Nebula, 


            Marco Prelini
ic443 - JellyFish Nebula
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Technical card

Imaging telescopes or lenses: Sky-Watcher 200/1000 PDS

Imaging cameras: ZWO ASI 294MC Pro

Mounts: Sky-Watcher AZ EQ6-GT

Guiding telescopes or lenses: Artesky Ultraguide 60/240 mm

Guiding cameras: ZWO ASI 120 MM Mini

Focal reducers: Baader MPCC Mark III

Software: Photoshop CC  ·  PixInsight

Filters: Baader Ha 2" 7nm CCD  ·  L-Pro 2"

Dates:Oct. 26, 2019

Baader Ha 2" 7nm CCD: 17x480" (gain: 120.00) -15C bin 1x1
L-Pro 2": 10x480" (gain: 120.00) -15C bin 1x1

Integration: 3.6 hours

Darks: ~21

Bias: ~21

Avg. Moon age: 27.64 days

Avg. Moon phase: 3.99%

Bortle Dark-Sky Scale: 3.00

Mean SQM: 21.50

Temperature: 10.00

Basic astrometry details

Astrometry.net job: 3032173

RA center: 6h 16' 37"

DEC center: +22° 34' 8"

Pixel scale: 0.945 arcsec/pixel

Orientation: 184.368 degrees

Field radius: 0.641 degrees

Resolution: 4044x2742

Locations: Osservatorio di Febbio, Febbio, Reggio Emilia, Italy

Data source: Traveller


In a period between 3000 and 30000 years ago, a star exploded in supernova throwing its surface gases at a huge distance. What we see today is what is left of this explosion, which now covers an area of about 70 light years, at 5000 light years from us.


Sky plot

Sky plot


ic443 - JellyFish Nebula, 


            Marco Prelini

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