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(IAAC) Obj: Shkh 202 (CGCG158-074, CGCG158-078, CGCG158-075, CGCG158-065) - Inst: 17.5" f/4.4 dob



Observer: Steve Gottlieb
Your skills: Advanced (many years)
Date and UT of Observation: May 1999
Location: Probably Sierra foothills, CA USA (Elev 900m)
Site classification: Rural
Limiting magnitude: Probably 6.5
Seeing: Very Good
Moon presence: None - moon not in sky
Instrument: 17.5" f/4.4 dob
Magnification: 380x
Filters used: None
Object(s): Shkh 202 (CGCG158-074, CGCG158-078, CGCG158-075, CGCG158-065)
Category: Group of galaxies.
Class: Compactness Coefficient 0.2
Constellation: Com
Data: Group size 11', 15 egs cataloged, 6 egs observed
Position: 121706 +2840
Description:
[Following] are observations of the four best Shakhbazians I've viewed...
Another one to take a look at is Shkh 26 = Abell 1143. If these prove easy
for the large aperture crowd, take a look at Shkh 49, located just 20' NW
of the N3158 cluster! -Steve Gottlieb
--
Shakhbazian 202 (6 galaxy members) - near eg IC 727
--
CGCG 158-074 = Shkh 202-1
12 19 53.4 +28 23 09     Size 0.7x0.4
This member of Shkh 202 is typical of the four compact members viewed:
very faint and small, round, ~15" diameter.  Located 5' S of a mag 6.7 star
and 3' SE of a mag 10.5 star.  A second mag 10 star is 6' W.  In a tight trio
with Z158-075 2.2' N and Z158-078 3.7' E.  Although very small, the members
have a reasonably high surface brightness and was able to observe at 380x
which also helped to move the bright star out of the field.
--
CGCG 158-078 = Shkh 202-2
12 20 10.2 +28 23 20    Size 0.4x0.3
This is last of four members of Shkh 202 viewed on 4/9/99 (excluding
IC 727 in the field), a faint group of very small galaxies about 15' N of 9
Comae.  Appeared extremely faint and small, 10"-15" in size and located 3.7'
due E of Z158-074.
--
CGCG 158-075 = Shkh 202-3
12 19 51.7 +28 25 21    Size 0.4x0.4
Very faint, extremely small, round, 10-15" diameter. This member of
Shkh 202 is situated just 2.5' S of a mag 6.7 star and 1.4' following a mag
10 star!  CGCG 158-74 is just 2.2' S and CGCG 158-78 is 4.5' SE.
--
Shkh 202-4
12 20 02.0 +28 26 43
This difficult member of Shkh 202 is situated just 2.8' ESE of mag 6.7
SAO 82246 which makes the observation quite a challenge.  Appeared virtually
stellar, perhaps 5" in diameter.  Not seen last month (4/9/99) in
observation of the group from Digger Pines.
--
Shkh 202-5
12 19 50.5 +28 24 20
This was the most difficult of 6 members of Shkh 202 viewed. Only glimpsed
for moments perhaps 15% of the time.  Seemed barely non-stellar, ~5"
in size.  Sandwiched between CGCG 158-075 = Shkh 16-3 just 1.0' N and CGCG
158-074 = Shkh 16-1 1.3' SE.  Not seen last month (4/9/99) from Digger Pines.
--
CGCG 158-065 = Shkh 202-6
12 19 38.6 +28 29 43    Size 0.7x0.5
Extremely faint, very small, round, 15" diameter.  Located 3.2' NW of
mag 6.7 SAO 82246 which detracts from viewing.  This galaxy is the
northernmost of 4 members of Shkh 202 viewed.  Observed at 380x in
very good seeing.
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