Arp 65

ARP 65 2015 Sep 17

Object:            ARP 65  (NGC 91 & NGC 93) Date:               2015 September 17
Peculiarity:    Spiral with small high surface-brightness companion on arm.
Constellation:           Andromeda Time & altitude:   21.55 UT      48º
Catalogue data: Seeing (5 high):                               3/5
            R.A:                00h 22m Transparency (5 high):                   3/5
            Dec:                +22º 24 Telescope:     0.5m f4.1 Dob.
            Magnitudes   13.6 & 13.3 Eyepiece:      8mm Ethos      x260
Galaxy sizes (min)   3 x 1 & 1.5 x 1 Filters:            Lumicon Deep Sky.


NGC 91 – hard to make out anything. Must be low unit surface brightness. Its core is quite small and I see indications of a large, round, faint halo bigger than NGC 93.

NGC 93 – easy to see, slightly oval halo with the major axis aligned nearly E-W, and a weak core.

The most prominent galaxy in this field is NGC 80 (13.1m), bottom left in the drawing. NGC 83 (13.6m) was also seen NE of NGC 80. These are not part of the Arp object.