Jellyfish Nebula
RA 6h 17m · Dec +22° 21′
10′

A supernova remnant with a distinctive shell of interlocking arcs, forming the appearance of a jellyfish. The remnant is interacting with a dense molecular cloud on its southern side, producing bright infrared emission. An excellent narrowband target particularly in SII and Hα.

Supernova remnant

Jellyfish Nebula

IC 443 · Gemini
These photons are ~5,000 years old
LPBroadband light-pollution filter. Suppresses the sodium and mercury glow of streetlights while passing the main nebula emission lines and natural star colours.ZWO Seestar S50ZWO Seestar S50Aperture 50mm · Focal length 250mm · f/5 · Apo triplet with ED element · Sony IMX462 colour CMOS sensor (1920 x 1080, 2.1MP)…View equipment →
⧉ 5 versions of this capture — pick one to see its image and log
Date
25/09/2025
Location
36.3858° N, 28.0412° E
Integration
26m (155 × 10s)
Software
ZWO Seestar app
Notes
·
Total effort
1h 54m over 1 night
Moon
🌒Waxing crescent, 10% lit
Plate solve
Centre RA
6h 17m 02.6s
Centre Dec
+22° 21′ 17″
Field
55.7′ × 98.8′
Pixel scale
2.38″/px
Orientation
62.6° E of N
Hemisphere
Northern
Also in this frame
IC 443IC443

Catalogued objects inside the plate-solved field, nearest the centre first. Highlighted names have their own photo here.

TelescopeZWO Seestar S50
CameraZWO Seestar S50 Camera
RigFamily Holiday Rig

Where to find it

Finder chart
+22°+22°30′+23°6h14m6h16m6h18m6h20mIC 443NE55.7′ x 98.8′10′

Star field and catalogued objects inside the plate-solved field, oriented to the solve. Fully offline, from the bundled star and deep-sky catalogues.

Interactive sky chart centred on 6 17 02.6 +22 21 17. Drag to pan, scroll to zoom, click a star or object to identify it. Zoom in to the plate-solved field for the DSS survey photo; zoom out for constellation figures and neighbouring catalogue objects. Fully self-hosted: the star and deep-sky catalogues and the survey image are all served from this site, so nothing external loads. Imagery: DSS2 colour (STScI / POSS-II). Constellation figures © Dominic Ford (GPLv3).

Captured from · Ρόδος (Rhodes)
36.3858° N, 28.0412° E · view on OpenStreetMap ↗ · Place data © GeoNames (CC BY)

Frequently asked questions

What kind of object is IC 443?
IC 443 is a supernova remnant.
Which constellation is IC 443 in?
IC 443 lies in the constellation Gemini.
How far away is IC 443?
The light in this image left IC 443 roughly ~5,000 years ago, so that is how far back in time you are seeing it.
What are the coordinates of IC 443?
IC 443 sits at right ascension 06h 17m 03s and declination +22° 21′ 17″ (J2000).
When is the best time to photograph IC 443?
IC 443 rides highest in the evening sky around December, reaching about 76° above the horizon from around 36°N.
What equipment was used to photograph IC 443?
This image of IC 443 was captured with ZWO Seestar S50 and ZWO Seestar S50 Camera.
How much exposure time went into this image?
This image of IC 443 represents 26m (155 × 10s) + 22m (130 x 10s) of total integration time.

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