- Galaxies of the Arp Catalogue (Tri) -

And (4) Cep (3) CVn (5) Lep (1) Peg (11) Tri (1)
Ari (3) Cet (1) Dra (1) LMi (4) Per (1) UMa (17)
Boo (1) Cnc (1) Gem (1) Lyn (2) Psc (5) UMi (1)
Cam (3) Com (3) Leo (10) Ori (1) Ser (2) Vir (6)

Arp 166 (GLXGRP)

../dss/dss2blue_015732.30_+331230.00_5_web.jpg
Image source: DSS II (blue) - 5×5'
Name: Arp166
Type: GLXGRP
Constellation: Tri
Coordinates: 01h57m32.30s / +33°12'30.00"

Group Members:
NGC750 (UGC1430, H2.222) 11.9 mag 1.6x1.3' (170°)
NGC751 (UGC1431) 12.5 mag 1.2x1.2' (90°)
8" f/6, 96x, Bortle 5, NELM 5.5+, SQM-L 20.8
Both galaxies already visible at 37x as compact brightening. At 96x evident with averted vision, roundish to slightly oval, slight brightening toward the middle. At 171x not clearly separated, but NGC751 appeared as extension. At 214x both galaxies could be separated in few moments. NGC750 appeared larger.

MODERATE
8" f/6, 171x, Bortle 4, NELM 6.0+, SQM-L 21.1
NGC750 appeared round with brighter core. I meant to see this galaxy separated from its neighbour NGC751, but unsure and without dark space. NGC750 appeared interestingly somewhat more compact than NGC751 - maybe a mistake by myself!? However NGC750 was well visible with averted vision. I will have a closer look at this galaxy pair the next time.
MODERATE