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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...
| Moon Phase | Last Quarter |
| Camera | Seestar S30 |
| Optics | 150 mm focal length, f/5, 30 mm aperture (APO triplet) |
| Date | 2026-04-08 |
| PixInsight Processing |
| Fast Integration |
| Drizzle Integration |
| BlurXTerminator (AI deconvolution) |
| Background Neutralization |
| Automatic Background Extraction |
| Dynamic Background Extraction |
| Spectrophotometric Color Calibration |
| NoiseXTerminator (AI denoise) |
| StarXTerminator (star removal) |
| Generalized Hyperbolic Stretch (x5) |
| PixelMath |
| Multiscale Median Transform |
| Curves Transformation |
| TGV Denoise |
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