Basic object information

Object name: Hickson 75
Object type: Compact galaxy group
Magnitude: 15.0, 16.5 & 16.5

Catalog information

RA (J2000.0): 15h 21m 30.5s
Dec (J2000.0): +21 11' 28"

Constellation: Serpens

Observer: Iiro Sairanen
Obs. place: Härskiänsaari, Ruokolahti, Finland
Date/Time: 31/1.4.2005 2:10

Telescope: Newton 406/1830 mm

Magn: 292x


Field: 10'

NE Lim.mag: 6.3

Background sky: 3

Seeing: 2

Height: 46
Visuality: III, V
Weather: -5C

One of the most difficult objects which I have ever seen. The brightest nebula consists of PGC 54804 (A, 15.0 mag) and PGC 54803 (B, 15.7 mag), I wasn't able to separate them. Two very faint "fuzzy stars" on east are PGC 54824 (D, 16.5 mag) and PGC 54827 (C, 16.5 mag). They were visible less than 10% of time with averted vision. Other members were too faint for me.