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AGC 3627 Pt 2
Hi Ivan,
Pt 2 ...
PGC 57652 (ESO 137-10) Gx Triangulum Australis
46cm x247: ESO 137-8 is the brightest of a large number of galaxies in AGC 3627 that includes ESO 137-1 (PGC 57532) 20’ NW, ESO 137-2 (PGC 57537) 16’ WNW, ESO 137-3 (PGC 57546) 16’ SW, ESO 137-6 (PGC 57612) 5’ WNW, ESO 137-7 (PGC 57637) 15’ N, ESO 137-10 (PGC 57652) 7’ NNE, ESO 137-11 (PGC 57656) 4’ NE and ESO 137-16 (PGC 57815) 26’ ESE. This is a challenging and frustrating galaxy cluster to observe because to the richness of the star-fields and the bright background due to the Milky Way. Makes identification difficult because star-patterns are very easy to confuse because there simply are so many stars. All these galaxies have low to very low surface brightnesses and it is nearly impossible to properly estimate sizes in the eyepiece because of the brightness of the background sky. ESO 137-6, ESO 137-8 & ESO 137-10 in a triangle with ESO 137-10 at the northern tip. This triangle is about 6 arc-mins a side. ESO 137-10 is seen to be slightly elongated in PA 0 and is the brightest of all. It has a short line of three magnitude 12-13 stars not far to the W. 1.5' x 40" in PA 0 and has a small slightly brighter core. ESO 137-06 & ESO 137-08 are E-W of each other and are simple, approximately 1' diameter spots of LSB haze brightening slightly to centre. Between ESO 137-10 & ESO 137-8 is ESO 137-11 which is somewhat to much fainter -- a spot of mist perhaps 30" diameter with a weak central brightening.
PGC 57656 (ESO 137-11) Gx Triangulum Australis
46cm x247: ESO 137-8 is the brightest of a large number of galaxies in AGC 3627 that includes ESO 137-1 (PGC 57532) 20’ NW, ESO 137-2 (PGC 57537) 16’ WNW, ESO 137-3 (PGC 57546) 16’ SW, ESO 137-6 (PGC 57612) 5’ WNW, ESO 137-7 (PGC 57637) 15’ N, ESO 137-10 (PGC 57652) 7’ NNE, ESO 137-11 (PGC 57656) 4’ NE and ESO 137-16 (PGC 57815) 26’ ESE. This is a challenging and frustrating galaxy cluster to observe because to the richness of the star-fields and the bright background due to the Milky Way. Makes identification difficult because star-patterns are very easy to confuse because there simply are so many stars. All these galaxies have low to very low surface brightnesses and it is nearly impossible to properly estimate sizes in the eyepiece because of the brightness of the background sky. Between ESO 137-10 & ESO 137-8 is ESO 137-11 which is somewhat to much fainter -- a spot of mist perhaps 30" diameter with a weak central brightening.
PGC 57815 (ESO 137-16) Gx Triangulum Australis
46cm x247: ESO 137-8 is the brightest of a large number of galaxies in AGC 3627 that includes ESO 137-1 (PGC 57532) 20’ NW, ESO 137-2 (PGC 57537) 16’ WNW, ESO 137-3 (PGC 57546) 16’ SW, ESO 137-6 (PGC 57612) 5’ WNW, ESO 137-7 (PGC 57637) 15’ N, ESO 137-10 (PGC 57652) 7’ NNE, ESO 137-11 (PGC 57656) 4’ NE and ESO 137-16 (PGC 57815) 26’ ESE. This is a challenging and frustrating galaxy cluster to observe because to the richness of the star-fields and the bright background due to the Milky Way. Makes identification difficult because star-patterns are very easy to confuse because there simply are so many stars. All these galaxies have low to very low surface brightnesses and it is nearly impossible to properly estimate sizes in the eyepiece because of the brightness of the background sky. Far off the E side of the cluster ESO 137-16 sits all by itself -- a small 30" diameter spot of very LSB mist with no detectable brightening to centre.
Hope they help,
Best,
L.
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