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Date:
  October 6, 2012

Location: Blue Canyon at 5200 feet

NELM: 6.5 – 6.7 (zenith)

Transparency: 4/5

Seeing: 4/5

 

Telescope: 22” f/4.0 reflector on an equatorial platform

Eyepieces:  24mm Panoptic (finder eyepiece), 10 and 6mm ZAO-II’s, 9 and 7mm BGO’s, 10 and 6mm Delos

 
Shneor and I made a trip up to Blue Canyon for a short night (moon rise 11:03 local time).  Glad that we made it the skies were above average, but the area near the horizon wasn't so great.  The Milky Way almost overhead is very detailed and showed hints of sugary texture.



Quick note about the KTG Catalogue.  It is Part I of isolated triplets of galaxies researched by a group of Russian astronomers in a paper published in Astrofizicheskie Issledovaniia, vol. 11 in 1979. This list contains 84 isolated triples of northern-hemisphere galaxies with apparent magnitudes of the components m < 15.7 mag.  There is a similar list for the southern hemisphere, KTS

 

Abstract of the original paper

A list of 84 northern isolated galaxy triplets with component apparent magnitudes no fainter than 15.7 is compiled on the basis of a complete examination of Palomar Sky Survey prints. Equatorial coordinates, photographic apparent magnitudes, angular diameters, angular separations, morphological types, radial velocities, and other characteristics of the triplet members are provided, along with finding charts. Three main types of triplet configuration are distinguished: double, line, and triangle. It is shown that triple systems constitute 0.8% of northern galaxies brighter than 15.7 mag, that 64% of the triplets are 'completely isolated', and that 24% of the triplet members are elliptical and lenticular galaxies, while 76% are spirals and irregulars.


Note: These are fairly raw notes out of my notebook.


All object parameters in parenthesis are listed in RA, Dec, size and listed magnitude without commas.
All images are from the Sloan Digital Sky Survey.





CGCG 427-35 trio in Pegasus

22” f/4 (230, 328 and 383x) – Trio of faint galaxies with one nearby member. 


CGCG 427-35  (21 53 16.0   +15 36 55   1.1x0.3’   15.3) – Very faint 2:1 elongated even surface brightness glow with diffuse edges.  0.6’ long and PA = 30 degrees.  A group resembling a house lies just east.
 

CGCG 427-36  (21 53 19.6   +15 33 05   0.5x0.4’   15.6) – Considerably faint round glow with a stellar core.  Defined edges.  0.2’ across.  Lies 3.9’ SSE from CGCG 427-35.


CGCG 427-37  (21 53 23.5   +15 31 44   0.5x0.5’   15.4) –.Considerably faint round even surface brightness glow with a stellar core.  0.2’ across.  Very slightly brighter than CGCG 427-36.  A mag 12.1 star lies just 0.7’ slightly south of west.  1.7’ SE of -36


Nearby galaxy, CGCG 427-24  (1.3x1.1’  15.1), lies on the other side of the “house” or about 6’ WSW of -37.  Very faint small round glow with diffuse edges.  Even surface brightness.  0.3’ across.



UGC 11851 trio in Pegasus   (KTG 74)

22” f/4 (230, 255, 328 and 383x) – Tight double galaxies of different proportions but roughly equal brightness with a much dimmer lone third member at the opposite end, but 20 times farther.


UGC 11851  (21 55 59.2   +05 54 08   1.0x0.7’  14.7) – Considerably faint round glow with a stellar core.  Defined edges.  0.4’ across.  A blazing mag 10.7 star lies 1.4’ south.


MAC 2156+0554  (21 56 00.8   +05 54 34   0.5x0.1’  15.5) – Faint slightly elongated small glow with defined edges.  Bright nearly stellar core.  0.1’ long and PA = 120 degrees.  Lies just 0.5 NE from UGC 11851.


MCG +1-56-1   (21 55 43.5   +05 48 30   0.7x0.7’   15.4)
– Very faint round diffuse glow.  Even surface brightness.  0.2’ across.  It lies pretty far at 6.9’ SW from the UGC.




NGC 7236 trio in Pegasus (Arp 169)

22” f/4 (230 and 383x) – A collinear trio of two similar NGC galaxies and an uncharted on the SE tip.  Quite a few field stars with a mag 10.4 star about 2.7’ SW from the trio.


NGC 7236  (22 14 45.0   +13 50 46   0.6’   14.6b)
– Faint round glow with defined edges.  Nearly stellar core.  0.4’ across.


NGC 7237  (22 14 46.9   +13 50 29   0.6’   14.4
) – Faint round glow with a much brighter center.  0.4’ across and 0.5’ SW from NGC 7236


Uncharted NGC 7237C (22 14 49.0   +13 49 58  0.1’   NED-16.9
) – Very faint very small round glow with a stellar core.  0.1’ across.  0.5’ SW from NGC 7237




UGC 12110 trio in Pegasus 

22” f/4 (230, 255, 328 and 383x) – Nice 45 degree right triangle of faint galaxies occupying about 3’ of space.  A mag 9.7 star lies 6.8’ due north.


UGC 12110  (22 36 54.5   +14 24 50   1.0x0.1’   15.3p)
– Faint 3:1 elongated glow with a slightly brighter center.  Defined edges and no detail.  PA = 135 degrees and 0.7’ long.  A mag 14 star lies just off the NW tip


MCG +2-57-4  (22 36 49.8   +14 23 13   0.9x0.7’   15.8)
– Very faint small round even surface brightness glow.   0.2’ across.


MCG +2-57-6  (22 37 01.5   +14 24 17   0.5x0.3’   16.4)
– Faint round glow with defined edges  Brighter center.  0.2’ across.





CGCG 430-1 trio in Pegasus  (KTG 75)

22” f/4 (230 and 383x) – Nearly collinear trio of galaxies with two brighter ellipticals and a dim smudge in the center. About 5’ long and aligned north-south.


CGCG 430-1, MCG +2-58-3  (22 44 09.9   +09 59 25   0.7x0.6’   15.2)
– Considerably faint round glow with defined edges.  Bright nearly stellar core.  0.3’ across.  A triangle of 12-14 stars lies to the south and west.


MCG +2-58-2  (22 44 11.4   +10 01 47   0.8x 0.4’   15.3p)
– Very faint diffuse round glow.  Even surface brightness, no central brightening.  0.2’ across and 2.4’ slightly east of north from CGCG 430-1.


CGCG 430-3, MCG +2-58-1  (22 44 09.3   +10 04 13   0.6x0.6’   15.3)
– Considerably faint round glow with defined edges.  Brighter center.  2.5’ slightly west of north from MCG+2-58-2.




UGC 12191 trio in Pegasus  (KTG 76)

22” f/4 (230 and 383x) – A bent string of three galaxies about 4’ long with a large very diffuse galaxy in the middle.


UGC 12191  (22 48 40.7   +27 36 43   1.3x0.6’   14.7p)
– Faint round even surface brightness glow with very diffuse edges with a broad brighter core.  0.5’ across.  A mag 12.3 star lies just off the north edge of the core.


UGC 12193  (22 48 44.0   +27 35 01   1.2x1.1’   13.9p)
– Considerably bright  diffuse irregular round glow.  0.7’ across.  Lies 1.6’ SE from UGC 12191.


CGCG 474-32  (22 48 53.9   +27 34 19   0.4x0.3’   15.8p)
– Faint round diffuse glow.  0.2’ across.




UGC 12297 trio in Pegasus

22” f/4 (230 and 383x) – Two bright high surface brightness galaxies with one uncharted galaxy occupying a space of 2.8’.


UGC 12297  (23 00 09.4   +31 24 33   1.1x0.4’   14.8p)
– Considerably bright 2:1 elongated glow with defined edges.  Much brighter nearly stellar core.  0.6’ long and PA = 135 degrees.


MCG+5-54-23  (23 00 09.6   +31 22 30   0.7x0.3’   15.5p)
– Considerably bright 3:2 elongated glow with defined edges.  Brighter center.  0.4’ long and PA = 90 degrees  2.1 due south of UGC 12297


Uncharted, PGC 214891  (23 00 12.6   +31 25 04   0.2x0.2’   16.4)
– Very faint small round even surface brightness glow.  Diffuse edges.




NGC 142 trio in Cetus

22” f/4 (230 and 255x) –  This trio was observed while it was fairly low over the SE horizon and the skies there wasn’t that great, probably about mag 5.


NGC 142  (00 31 07.9   -22 37 10   1.0x0.5’   14.6p)
– Considerably bright round glow with somewhat defined edges.  PA = 0.4’ across.


NGC 143  (00 31 15.6   -22 33 37   0.9x0.2’   15.2p)
– Faint 3:1 elongated even surface brightness glow.  0.7’ long and PA = 30 degrees.


NGC 144  (00 31 20.7   -22 38 44   0.8x0.7’   14.4p)
– Considerably faint round glow with diffuse edges.  Slightly brighter center.  0.5’ across.




NGC 177 trio in Cetus

22” f/4 (230 and 255x) – This trio was also observed while it was fairly low over the SE horizon, about 20 degrees.


NGC 177  (00 37 34.2   -22 32 57   2.2x0.4’   14.1p)
– Considerably bright 3:1 elongated glow with a nearly stellar core.  Somewhat defined edges. 1.2’ long and PA = 10 degrees.


NGC 172  (00 37 13.5   -22 35 12   2.0x0.3’   14.0b)
– Very faint diffuse 3:1 elongated even surface brightness glow.  0.8’ long and PA – 10 degrees


NGC 168  (00 36 38.6   -22 35 36   1.1x0.2’   14.8p)
– Considerably faint, 3:1 elongated glow with defined edges.  Detected a very faint string of stellar spots along the axis.  0.6’ long and PA = 30 degrees




MAC 0033-0251 trio in Cetus

22” f/4 (230, 328 and 383x) – Very compact trio of faint galaxies in a space of less than 1’ across.  A mag 8.9 star lies 8.2’ ENE.


MAC 0033-0251   (00 33 53.2   -02 51 22  0.5x0.2’   16.0)
– Faint small 3:2 elongated glow.  PA = 20 degrees and 0.3’ long.


MAC 0033-0251A   (00 33 51.6   -02 51 16  0.3x0.2’   16.5)
– Extremely faint round very small round glow.  About 0.2’ across.  Lies about 0.5’ dues west.


MAC 0033-0250   (00 33 53.8   -02 50 59  0.3x0.2’   16.5)
– Very faint small round glow with a  slightly brighter center. 0.2’ across.  Lies 0.2’ off the north tip.






NGC 235 trio in Cetus

22” f/4 (230, 328 and 383x) – A nice group of galaxies consisting of a double galaxy and a single.  Occupies a space of 2.5’ across.  A couple thin galaxies, NGC 230 and IC 1573 lies to the SW, I didn’t look for the latter.


NGC 235 (00 42 52.7   -23 32 26   1.3x0.6’   14.1b)
– Considerably bright round glow with a stellar core.  Defined edges.


NGC 235A (00 42 53.8  -23 32 44  0.3’, 13.9p
) – Lies just 0.2’ off the SE edge of NGC 235 Very faint very small glow with a stellar core. 


NGC 232  (00 42 45.5   -23 33 40   0.9x0.7’   14.4p)
– Considerably faint round glow with defined edges.  Faint stellar core. 


NGC 230  (00 42 26.5   -23 37 48   1.0x0.2’   15.6p)
– Very faint thin glow.  Even surface brightness 0.6’ long and PA = 45 degrees.  A pait of may 12 and 14 stars lies on each end of the project.




UGC 2211 trio in Cetus

22” f/4 (230 and 383x) – Small collinear string of three faint galaxies of about 2.2’ end to end.  Aligned roughly east to west.


UGC 2211   (02 43 39.1   +06 38 35   1.1x0.1’   16.2, NED-16.5)
– Very faint small slightly elongated core.  0.5’ long. 


MAC 0243+0639   (02 43 56.9   +06 39 17   0.3x0.3’   16.0, NED-16.55)
– Extremely faint 2:1 elongated glow.0.3’ long and PA – 175 degrees)


Uncharted  (02 43 52.3   +06 39 11   0.2’   NED-16.48)
– Very faint small round glow with diffuse edges. 




CGCG 406-11 trio in Pegasus  (KTG 77)

22” f/4 (230, 255, 328 and 383x) – A faint double galaxy on the SE end with a single faint galaxy at the NW end. 


CGCG 406-11  (23 10 39.0   +09 11 19   0.5x0.4’   15.6) –
Faint small round glow with somewhat diffuse eedges.  Very faint, nearly stellar core.  0.3’ across.


CGCG 406-13  (23 10 50.3   +09 08 39   0.4x0.2’   14.8)
– Considerably faint small glow with stellar core.  0.2’ across.


MAC 2310+0909  (23 10 51.3   +09 09 12   0.5x0.2’   15.5)
– Considerably faint round glow with a stellar core.  Defined edges. About 0.3’ NE of CGCG 406-13.  This pair lies 3.8’ away from CGCG 406-11, at about 3.7’ south.







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