Arp 112

ARP 112 2015 Sep 12

Object:            ARP    112

(NGC 7805, 7806 & companion)

Date:               2015 September 12


Peculiarity:    Elliptical repelling spiral arms.
Constellation:           Pegasus Time & altitude: 20.45 UT      45º
Catalogue data: Seeing (5 high):                               3/5
            R.A:                00h 02m Transparency (5 high):                   4/5
            Dec:                +31º 26 Telescope:     0.5m f4.1 Dob.
            Magnitudes:  13.3 & 14.3 Eyepiece:      8mm Ethos      x260
Galaxy sizes (mins):  1.2×0.9 & 1.1×0.8

Filters:            Lumicon Deep Sky

(But see notes).


W winds and Atlantic air is back, bringing much better conditions than on Sept 9. The view is better without the deep sky filter, a sign of good air. NGC 7805 is noticeably brighter than 7806, round with a non-stellar core. NGC 7806 is oval 3:2 with the major axis pointing to 7805. I see a hint of spiral structure maybe? The companion MCG+5-1-26 (mag 16.5) was not seen although the two faint stars on either side of it were seen E of the main galaxies.