Arp 209

ARP 209 2015 July

Object:    ARP 209    (NGC 6052) Date:               2015 July 20
Peculiarity:    Irregularities, absorption and resolution.
Constellation:           Hercules Time & altitude: 23.10 UT     42º
Catalogue data: Seeing (5 high):                               3/5
            R.A:                16h 05m Transparency (5 high):                   3/5
            Dec:                +20º 32 Telescope:     0.5m f4.1 Dob.
            Magnitude:                13.0 Eyepiece: 17mm Ethos x120,  8mm Ethos x260
            Galaxy size (mins):  0.9 x 0.7 Filters:            None.


First session with newly aluminised mirrors. Tiny, but easy to see with DV. Appears round at x120, irregularities are revealed at x260. The irregularities suggest a roundish halo with a triangular core narrowing to the S which oddly is the reverse of what shows in CCD images. I do not have my cardinal points mixed up!  I saw hints of other detail that were too vague and fleeting to attempt to draw.