GSSP - Lassen Peak parking lot (2/3)

by Alvin Huey

19 galaxies seen mostly with the 7 and 5mm TMB Supermonocentrics. I used a 7.5mm Tak LE to reorient myself from time to time. I used a 22" reflector at Lassen Peak parking lot. NELM was 7.5 or 7.6 at best.

Three galaxies are obviously brighter than the others.

I've labeled the 19 detected galaxies. Here are two galaxies that I could not determine the destination of. They are marked as "?"

PGC 54883 and 54881 forms a nice double galaxy separated by a mere 20". Both are considerably faint and round. The other bright galaxy, MAC 1522+2747C, is a considerably faint 3:1 elongated even surface brightness patch. PA = 60 and about 15" long. This is located way up on the north edge of the cluster. Actually this was the first galaxy I detected while centering the cluster on my eyepiece.

Starting with the western bright star, the one at mag 10.8. There are five galaxies in its immediate environs that I spotted. All are very small and very to extremely faint. PGC 54869 MAC 1522+2742A PGC 54867 MCG+5-36-17 MAC 1522+2741D

Working my way to the mag 12.9 star to the SW. I spotted only one additional galaxy, MAC 1522+2739B as an extremely faint round glow.

Back to the original bright mag 10.8 star, and working my way to the east, I see a lot of galaxies.
MCG+5-36-20 - is a very faint round patch. 1.4' east of the star. PGC 54883 and PGC 54881 is a pair of considerably faint and round. Almost merged and separated by 20". A nearly equilateral triangle of galaxies due south of the pair of PGC's are detected as three extremely faint round smudges. They are MCG+5-36-21, PGC 54878, MAC 1522+2741G

MCG+5-36-20 lies between the pair of PGC's and the 10.8 mag star as a very faint, very small round patch.

MCG+5-36-19 is a very faint round patch lying about 1.5' north of MCG+5-36-20

MCG+5-36-22 lies very close to a ~16 mag star, as an extremely faint fuzzy star. I almost missed it.
MAC 1522+2739C - extremely faint, very small round patch
MCG+5-36-24 - extremely faint, very small round patch
MCG+5-36-23 - very faint, very small round patch
MAC 1522+2742D - extremely faint, very small round patch

Two questionable fuzzy spots were detected, but not labeled as galaxies in Megastar. I'll need to research it more on the internet. They are located. 1 - just 17" SW of a mag 15 star, which lies 2.2' WSW of the northern mag 10.5 star.
2 - forms a nice double with a mag 16 star. The pair is located 2.2' SSE of the mag 10.5 star

Abell 2162

10 galaxies seen mostly with the 7, 5 and 4mm TMB Supermonocentrics. I used a 22" reflector at Lassen Peak parking lot. NELM was 7.5 or 7.6 at best.

Three galaxies are obviously brighter than the others.

I've labeled the 10 detected galaxies. Here is one galaxy that I could not determine the destination of. It is marked as "?"

The two brightest galaxies are very easy to detect NGC 6086 and NGC 6085 are a bright round patches. I didn't look for any detail as I forgot to go back to them.

MAC 1612+2925 - appears as a very faint thin streak. PA = 90 and about 20" long.

MAC 1612+2938A is a 2:1 elongated even surface brightness patch embedded in a nice flat triangle of mag 12 and 13 stars.

A mottled clump was detected at 327x about 8' NW of NGC 6086. Cranking the magnification to 458x, showed some individual galaxies. I cranked it even more to 575x with a 4mm TMB Supermonocentric. The field resolves into 6 extremely faint galaxies; 5 named galaxies and 1 unlabeled galaxy. The unlabeled galaxy is about 1.3' east of MAC 1612+2934
MAC 1612+2934
MAC 1612+2933A
MAC 1612+2932A
MAC 1612+2932B
MAC1612+2933B
?

I'll post pictures in the folder titled Abell Galaxy Clusters in tac-sac yahoo group.