Basic object information

Object name: M 1
Popular name: Crab Nebula
Object type: Supernova remnant
Magnitude: 8.4
Size: 6.0'x4.0'
Surface brightness: 11.0
Description: vB,vL,E135,vglbM,r
Notes: Crab Nebula;Rosse saw filaments;cent pulsar 16 mag;3C144

Catalog information

RA (J2000.0): 05h 34m 30.0s
Dec (J2000.0): +22 01' 00"

Constellation: Taurus

Observer: Iiro Sairanen
Obs. place: Tähtikallio, Artjärvi, Finland
Date/Time: 23/24.9.2006 3:20

Telescope: Schmidt-Cassegrain 406/4064 mm

Magn: 308x


Field: 13'

NE Lim.mag: 6.3

Background sky: 3

Seeing: 3

Visuality: I

Height: 37

Weather: +5C

Not so successful sketch of Crab Nebula. The correction lens' inner surface was dewed up and the view was little bit bleary. The typical shape was obvious, edges are fainter, mottling?