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Last update: 2017-11-14

VdS FG

- Bright Nebulas (Gem) -

Aur (7) Cep (11) Gem (1) Per (4) Tau (6)
Cam (2) CMa (1) Mon (3) Ser (1) Tri (4)
Cas (8) Cyg (11) Ori (14) Sgr (2) Vul (2)

IC443 (BN)

DSS
© DSS II (red) - 80×80'
Name: IC443
Type: BN
Constellation: Gem
Coordinates: 06h16m40.00s / +22°30'00.00"
Brightness / Size: - / 50.0x40.0'
Supernova remnant.

8" f/6, 80x + [OIII], Bortle 4, NELM 5.9+, SQM-L 21.0
SQM-L 20.8: Comparable with the observation in the 12.5 inch Dobsonian, just a bit fainter. At 37x with [OIII] filter the nebula was quite faint with averted vision.

MODERATE
12.5" f/4.5, 45x + [OIII], Bortle 4, NELM 5.9+, SQM-L 21.0
SQM-L 20.8: At 45x with [OIII] filter the nebula appeared as a curved brightening with some embedded stars. It is the brightest part of IC443 in the northeast. In the south there was a notch, so that the nebula looked like a fishhook. A magnification of 72x with [OIII] didn't showed more details. Without any filter the nebula was just a faint, structureless glow at 72x.
EASY