Arp 98

ARP 98 2015 Sep 20

Object:            ARP 98

(MCG +5-4-66 & MCG+5-4-67)

Date:               2015 September 20


Peculiarity:    Spiral with elliptical companion on arm.
Constellation:           Triangulum Time & altitude:   00.05 UT      65º
Catalogue data: Seeing (5 high):                               4/5
            R.A:                1h 32m Transparency (5 high):                   5/5
            Dec:                +32º 06 Telescope:     0.5m f4.1 Dob.
            Magnitudes:  15.7 & 15.0 Eyepiece:      8mm Ethos      x260
Galaxy sizes (mins): 1.4 x 0.5 & 0.3 Filters:  Lumicon Deep Sky made no difference.


A rare night of very transparent air. In the zenith M31is perhaps the best I’ve seen from England. Despite this, seeing this object was still a struggle. I saw the elliptical companion (+5-4-66) as a round haze with AV only. I tried everything to detect the spiral (+5-4-67) but failed despite the catalogue listing it as brighter.