Arp 85

ARP 85 2012 May 13

Object:            ARP 85

( M51, NGC 5194 & 5)

Date:               2012 May 13

 

Peculiarity:   Spiral, large high surface-brightness companion on arm.
Constellation:           Canes Venatici Time & altitude:        22.30 UT      85º
Catalogue data: Seeing (5 high):                               3/5
            R.A:                13h 30m Transparency (5 high):                   3/5
            Dec:                +47º 12 Telescope:     0.5m f4.1  Dob.
            Magnitudes:  8.4 & 10.5

Eyepiece:      16mm Clavé    x130

10mm Clavé    x205

 

            Galaxy sizes (mins):

10 x 8 & 5.8 x 4.6

Filters:            None

Notes:

Better at x130. Nucleus is oval. Companion appears triangular. The spiral pattern is defined more by dark areas than by light. A few bright knots evident on the arms, as in the drawing.