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(IAAC) Obj: Hickson 50 (Shakhbazian 5) - Inst: 20" f/4? dob
[Note: This fascinating, highly challenging object is an extremely
TIGHT grouping of galaxies - note the size is only 43 arcsec! It's
notable for needing both excellent seeing AND transparency to see,
and for being a mere 20' ESE of the Owl Nebula, M97. -Lew Gramer]
Observer: Jens Bohle
Your skills: Advanced (many years)
Date/time of observation: Unknown
Location of site: Germany
Site classification: Unknown
Sky darkness: 6.5 <Limiting Magnitude>
Seeing: Unknown
Moon presence: None - moon not in sky
Instrument: 20" f/4? dob
Magnification: High
Filter(s): None.
Object(s): Hick 50 (Shk 5)
Category: Group of galaxies.
Class:
Constellation: UMa
Data: Brightness 14.4; Size 0.7'
Position: 11:17:06 +54:55:06
Description:
I just want to add something about Hickson 50 (Shk 5). The magnitudes
given in the Hickson catalog are blue magnitudes. The visual appearance
is brighter (nearly two magnitudes). I was able to see H 50 A in my
20incher under 6,5mag skies. A buddy of mine managed to see three
members of this elusive group using a 20incher under better skies than
I had. Another guy here in Germany was able to see H 50 A even in an
18incher under 7,0mag skies. The red magnitudes are much brighter than
the blue magnitudes and even brighter than the visual magnitudes. The
red part of the spectrum is the strongest (lots of red stars in these
galaxies). For example, H50 A has 16,2 red mag and 18,4 blue magnitude.
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