Basic object information
Object name:NGC 7142
Object type: Open cluster
Magnitude: 9.3
Size: 12.0'
Number of stars: 100
Magnitude of brightest star: 12.1
Object classification: II 2 r
Description: Cl,cL,cRi,pC,*11..14
Notes: H VII 66

Catalog information
RA (J2000.0): 21h 45m 12.0s
Dec (J2000.0): +65° 46' 00"
Constellation: Cepheus

Observer: Iiro Sairanen
Obs. place: Härskiänsaari, Ruokolahti, Finland
Date/Time: 21/22.8.2009 2:55

Telescope: Newton 457/2280 mm

Magn: 176x
Field: 23'
Background sky: 2 (21.5)Visuality: I

Filter:
NE Lim.mag: 6.7
Seeing: 3
Height: 77°

Weather: +7°C

A pretty rich open cluster in a rich field. The brightest stars are 11 mag but mainly they're 12-14 mag.