Hickson 45

Elevation 800 m, telescope D = 508 mm, F = 2000 mm. Sky 21.72 mag/sw arcsec, seeing 1-2 arcsec. Hickson 45, galaxy group, UMa. Core of components A, D and extensions of A can be glimpsed in a 5.5 mm ocular. Faint star S [interpolated Vm 15.85], B small and amorphous SW of it. Double star at the NW end of the asterism involving A and D is cleanly resolved. [Separation 8.3 arcsec.] C is invisible next to bright star at the S end of the group.