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(IAAC) Obj: M58 - Inst: 20" f/5 Dobsonian
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Observer: Lew Gramer
Your skills: Intermediate (some years)
Date/time of observation: 1998-01-01/02 11:35 UT
Location of site: Deerfield Township, OH, USA (Lat 41oN, Elev 100m)
Site classification: Rural
Sky darkness: 6.5 <Limiting magnitude>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 20" f/5 Dobsonian
Magnification: 70x
Filter(s): None
Object(s): M58
Category: External galaxy
Class: Sb
Constellation: Vir
Data: mag 9.8 size 5.4'x4.4'
Position: RA 12:38 DEC +11:50
Description:
The first glimmerings of dawn began to wash out detail in "faint fuzzies",
leaving me just time for a cursory glance at lovely M58. At 70x, it appeared
as a broad disc of faint light, only slightly elongated E-W. At the center was
a condensed brightening set amid an inner halo, lying inside the fainter disc
of the outer halo. Though rapidly washed out, a hint of darker mottling could
definitely be seen near the SE "boundary" between these inner and outer halos.
No spiral arms were in evidence tonight - again, merely an effect of twilight.
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