Exposure data
Telescope: 4.5″ Newton f=440mm
Camera: SBIG ST2000XM
Filters: SBIG LRGB
Exposure times: L: 30x3min R: 5x3min G: 5x3min B: 5x3min
Exposure time total: 2h 15min
Mount: Vixen New Atlux
Location: Erdweg/Germany (500m)
Date: 2007-08-26
Object data of NGC 436
Object type: Open cluster (l 2 m)
Size: 6′
Magnitude: 8.8 mag
Constellation: Cassiopeia
Distance: 9800 Ly
Object data of NGC 457
Object type: Open cluster (ll 3 r)
Size: 13′
Magnitude: 6.4 mag
Constellation: Cassiopeia
Distance: 7900 Ly
