IC443 - The Jellyfish Nebula

narrowband nebulae

IC443, The Jellyfish Nebula, is a supernova remnant in the constellation Gemini. At roughly 5,000 light years, the Jellyfish sits near the star Tejat Prior (meaning ‘forward foot’), the left foot of the northern twin. (Tejat Prior is, itself, a triple star system, at magnitude ~3.2 – so reasonably easy to spot in most skies.)

This image consists of 24 1200s Ha, 16 1200s OIII, and 18 1200s SII exposures with a Tak FSQ106 and QSI683 camera. Total integration: 11.3 hours.

Resolution ........ 2.103 arcsec/pix
Rotation .......... 95.073 deg
Focal ............. 529.74 mm
Pixel size ........ 5.40 um
Field of view ..... 1d 56' 12.2" x 1d 27' 7.1"
Image center ...... RA: 06 17 17.646  Dec: +22 44 35.39