ScienceDownEast | ScienceDownEast Astrophotography | Nebulae | IC 433 Jellyfish Nebula | IC 443 (Jellyfish Nebula)
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IC 443, nicknamed the Jellyfish Nebula, is a supernova remnant in the constellation Gemini, located near the star Eta Geminorum at the foot of the Twins. Estimates place it roughly 5,000 light-years away (with some studies suggesting closer to 6,000), giving it a true diameter on the order of 70 light-years; the explosion that created it likely occurred tens of thousands of years ago, though age estimates vary widely. The remnant is associated with a neutron star, and its shock front is seen colliding with adjacent molecular clouds, producing the tangled, tentacle-like filaments that give the nebula its name. Both Hα and O III narrowband filters are effective here, revealing the delicate shock-excited filaments against the surrounding star field, with the brighter western arc offering the most photogenic detail for amateur imagers.
[Source: Wikipedia, en.wikipedia.org/wiki/IC_443; constellation-guide.com]
IC 443, nicknamed the Jellyfish Nebula, is a supernova remnant in the constellation Gemini, located near the star Eta Geminorum at the foot of the Twins. Estimates place it roughly 5,000 light-years away (with some studies suggesting closer to 6,000), giving it a true diameter on the order of 70 light-years; the explosion that created it likely occurred tens of thousands of years ago, though age estimates vary widely. The remnant is associated with a neutron star, and its shock front is seen colliding with adjacent molecular clouds, producing the tangled, tentacle-like filaments that give the nebula its name. Both Hα and O III narrowband filters are effective here, revealing the delicate shock-excited filaments against the surrounding star field, with the brighter western arc offering the most photogenic detail for amateur imagers.
[Source: Wikipedia, en.wikipedia.org/wiki/IC_443; constellation-guide.com]
| Moon Phase | Last Quarter | ||||||||
| Camera | Seestar S30 Pro (4K Sony IMX585 sensor) | ||||||||
| Optics | 160 mm focal length, f/5.3, 30 mm aperture (APO quadruplet) | ||||||||
| Date | 2026-04-08 | ||||||||
| PixInsight Processing |
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