Arp 217

ARP 217 2015 May 18

Object:    ARP 217     (NGC 3310) Date:               2015 May 18
Peculiarity:    Adjacent loops.
Constellation:           Ursa Major Time & altitude: 23.45 UT     47º
Catalogue data: Seeing (5 high):                               4/5
            R.A:                10h 39m Transparency (5 high):                   3/5
            Dec:                +53º 30 Telescope:     0.5m f4.1 Dob.
            Magnitude:    10.8 Eyepiece:      8mm Ethos      x260
            Galaxy size (mins):  3.3 x 3 Filters:            None.


This is an easy, high surface brightness object, like an unresolved globular cluster. When placed in the centre of the field a 5.5m star is on the edge of the field to the N.  Further scrutiny reveals an extensive but inconspicuous halo. No features seen in either core or halo.