Arp 90

ARP 90 2017 May 2

Object: ARP 90 (NGC 5929 & 5930) Date:               2017 May 2
Peculiarity:                Spiral with large high-surface brightness companion on arm.
Constellation:           Boötes Time & altitude:   01.30 UT          77º
Catalogue data: Seeing (5 high):                               4/5
            R.A:                15h 26m Transparency (5 high):           3 to 4/5
            Dec:                41º 40 Telescope:                 0.5m f4.1 Dob.
            Magnitudes:  14.1 & 13.6 Eyepiece:                  8mm Ethos    x260
Galaxy sizes (mins):  1.0×0.9 & 1.7×0.9 Filters:                        None.

Notes:

A pair of galaxies not seen to be in contact. There is space or a dark lane between them. 5930 is the larger of the two. Both appeared to have somewhat angular outlines. There were hints of structure in NGC 5930 but nothing sufficiently positive to put in a sketch.