IC443, Jellyfish Nebula
IC443, also designated Sh2-248, is a supernova remnant in the constellation Gemini. It is informally known as the Jellyfish Nebula. It has a diameter of 50 arcminutes and lies 1,500 light-years away from us.
General information
- Constellation
- Gemini
- Category
- Nebulae
- Date
- 3 February 2025
Capture
- Total time
- 5h 44min with SHO
- Subframes
- 41Ha + 20OIII + 25SII
- Gain / Offset
- 125 / 30
- Calibration
- 50 flat frames, 50 dark-flat frames and 50 library dark frames, without bias frames.
Equipment
- Telescope
- TS102 f/5.6
- Camera
- ASI294MM at -10ºC
- Filters
- H-alpha, OIII, SII Astronomik, 6 nm
- Mount
- Sky Watcher Wave 150i
- Guiding
- PHD2, OAG + ASI224MC + PegasusAstro UCH + PPB Micro
- Focuser
- ZWO EAF focuser
- Filter wheel
- ZWO EFW 7pos
Processing and environment
- Processing
- PixInsight 1.9.2
- Acquisition
- NINA+Stellarium
- Location
- L'Ampolla, Tarragona
- Sky
- Bortle 4