|Optics:||Takahashi FSQ106ED f/5 (main)|
Scopos ED66 (guide)
|Cameras:||QHY8 Pro (main)|
Starlight SXV-M7 (guide)
|Moon:||69 % illuminated fraction|
|Date:||30 July 2009|
|Remarks:||elongated stars in lower left-hand corner due to tilt of camera in focuser|
NGC 7789 object information
NGC 7789 is an open star cluster in Cassiopeia,
about 3° west of Caph, beta Cas. It is a large and very rich (in stars)
cluster with 16’x16′ diameter.
Visual observing: the cluster is an interesting object in medium-sized
telescopes, it has a compact character containing about 100 stars with
Dec: +56° 42′ 30″
Distance: 7600 light years
Trumpler classification: II 1 r.