Basic object information

Object name: Tr 1
Object type: Open cluster
Magnitude: 8.1
Size: 4.5'
Number of stars: 20
Magnitude of brightest star: 9.6
Object classification: I 3 p
Description: S,pC
Notes: 2 10 mag * and haze of unresolved stars

Catalog information

RA (J2000.0): 01h 35m 42.0s
Dec (J2000.0): +61 17' 00"

Constellation: Cassiopeia

Observer: Iiro Sairanen
Obs. place: Härskiänsaari, Ruokolahti, Finland
Date/Time: 26/27.9.2005 0:0

Telescope: Newton 406/1830 mm

Magn: 244x


Field: 12'

NE Lim.mag: 5.5

Background sky: 5

Seeing: 5

Height: 73
Visuality: I
Weather: +9C, 35% Moon in east, moist and generally pathetic

Poor but still very interesting group of 11 mag and fainter stars. There are four 11 mag stars in the very same line which looks fine with a 16". More fainter stars on the west side.