Gallery Index

IC 443

Jellyfish Nebula

A supernova remnant in Gemini

TypeNebula ConstellationGemini SeasonWinter PaletteNarrowband Integration time8h 55m Captured2021

A supernova remnant with filamentary shock fronts drifting through the winter sky in Gemini.

This frame remains part of the Lost Photons archive.

What am I looking at?
A supernova remnant with filamentary shock fronts drifting through the winter sky in Gemini.
Where is it in the sky?
Jellyfish Nebula (IC 443) lies in Gemini, a winter constellation for mid-northern latitude observers.
When is the best time to photograph it?
Gemini is best placed during winter (December through February), when it clears the horizon earlier in the night.
Target Planner

When to image this target

Nebula in Gemini; best planned for December through February from New Jersey.

Best season December through February

Winter targets reward clear, steady nights and usually climb well by late evening.

Good from NJ Late autumn through winter nights

Assumes a New Jersey backyard horizon and evening imaging.

Object type Nebula

Emission nebulae are good candidates for narrowband filters; reflection nebulae prefer darker skies.

Constellation Gemini

IC 443 is listed here in Gemini.

Moon tolerance Narrowband can tolerate some moonlight.

Current frame: Narrowband / Ha and OIII.

Live altitude, moon, and filter guidance
Planning from Sewell, NJ

Calculating target altitude and moon context.

Check your location Enter ZIP in planner

Use the full planner to enter a ZIP code, choose a date, and compare the target from your sky.

Planning values are approximate and update in your browser.

Planning site Sewell, NJ 39.7700, -75.1400
Current altitude ...

Based on the current time.

Target transit chart Compact altitude curve for this target over a full day. Target ...

Green marks usable dark-sky altitude.

Next transit ...

Next upper transit.

Rise / set ...

Approximate horizon crossing.

Moon now ...

Moon phase and altitude.

My gear vs this target

How I captured this

8h 55m Total integration
2 Nights
L-eXtreme Channels
Channel Frames Time
L-eXtreme 107 frames 8h 55m
Totals 8h 55m
Equipment used
From my current rig
Mount
iOptron CEM60
Telescope
Explore Scientific FCD100 127mm Carbon Fiber Triplet APO
Camera
ZWO ASI2600MM Pro
Filters
Chroma 36mm Ha, OIII, SII, and LRGB (ZWO EFW 7×36mm)
Focuser / rotator
MoonLite NiteCrawler
Reducer
Starizona Apex ED 0.65×
Guiding
ZWO off-axis guider + ASI290MM Mini
Control / power
PrimaLuceLab Eagle 4S, Powerwerx PSU, Bioenno field battery, and MEGAbox