Еще наблюдение:
Observer: Brent Reary
Your skills: Intermediate (some years)
Date/time of observation: 07/03/05 04:50 UT
Location of site: Rolla, MO USA (Lat 37 57'N, Elev )
Site classification: Rural
Sky darkness: 6.5 <Limiting magnitude>
Seeing: 6 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 10.1" f/4.5 Newtonian reflector
Magnification: 128x, 257x
Filter(s): None
Object(s): SN2005cs
Category: Extragalactic star.
Class:
Constellation: CVn
Data: mag 14.
0 size
Position: RA 13:30 DEC +47:10.5
Description:
IAUC circular 08553 has announced a supernova just off the S. edge of the
nucleus of NGC5194 in M51. An average of the most recently posted observations
indicate that it is around magnitude 14.
0 although it is thought to be
brightening and a few observations have estimated the brightness at ~13.5.
A finder chart downloaded from the Supernovae Home Page show the object to be
in the first spiral arm to the S. side of the nucleus and at the end of a line
extended from the nucleus of NGC5195 through the nucleus of NGC5194. At 128x
a pair of ~13.5 magnitude stars just S. of the nucleus and aligned NW-SE were
visible with averted vision but the supernova could not be seen. At 257x the
supernova, during moments of steady seeing, was repeatedly visible with averted
vision and I would estimate it at about 14th magnitude. This observation
probably represents the limit of my capability with this instrument.
http://www.visualdeepsky.org/netastrocatalog/msg04817.html
