Caldwell 4 NGC 7023 The Iris Nebula vdB 139
Constellation: Cepheus
Distance: 1.4 kly
Mag: 7
Type: Open Cluster and Nebula
Imaging Location: Didsbury AB Canada
Imaging Platform: AT8IN Canon 40D MPCC
Mount: CGEM
Guiding Setup: SSAG Orion Short Tube 80
Exposure: 6x600
Date: 2010-11-10
Software: Images Plus, PHD, Photoshop CS4