Basic object information

Object name: NGC 1058+SN2007gr
Object type: Galaxy
Magnitude: 11.2
Size: 2.5'x2.5'
Object classification: Sc
Description: pF,cL,R,glbM
Notes: H II 633;NGC1023 grp;patchy main body;mult arm pattern;SN1961v

Catalog information

RA (J2000.0): 02h 43m 30.0s
Dec (J2000.0): +37 20' 00"

Constellation: Perseus


Observer: Iiro Sairanen
Obs. place: Härskiänsaari, Ruokolahti, Finland
Date/Time: 19/20.8.2007 0:45

Telescope: Newton 457/2280 mm

Magn: 352x

Filter:

Field: 12'

NE Lim.mag: 6.3

Background sky: 3

Seeing: 2

Visuality: III

Height: 37


Weather: +14C

Second bright supernova in this fall, what a begin of the new season! I made first observation thru the clouds at night 18/19.8 but on the next morning I realized that whole galaxy has been placed wrong in my sketch. I have drawn a faint halo around the supernova and suspected that the supernova was the core. Actually I didn't know the exact place of supernova. That mistake was explicable because the weather was very cloudy. Two nights after I fixed the sketch and this is the result. The supernova is brighter of two "stars" in the galaxy's halo on the north side of the core. Galaxy itself is pretty modest and has a low surface brightness. The core is somewhat brighter.