NGC 457  +  NGC 436

Full resolution (1600x1200 px  680kB)

Object data of NGC457

Object type: open cluster (II 3 r)
Size: 13'
Magnitude: 6.4 mag
Constellation: Cas
Distance: 7,900 Ly
Notes: down left in image

Object data of NGC436

Object type: open cluster (I 2 m)
Size: 6'
Magnitude: 8.8 mag
Constellation: Cas
Distance: 9,800 Ly
Notes: top right  in image

Exposure data

Date: 2008-01-08
Location: Nussbach / Austria (400m)
Telescope: TeleVue NP101 (4" Apo f=540mm)
Camera: ST2000XM with CFW8 and SBIG Filters
  Binning: L 1x1 / RGB 1x1
  Exposure time: L 36x2m / R 10x8m / G 10x4m / B 10x4m
Exposure time total: 3h 52m

many background galaxies (red color because of dust in the milky way)