About image NGC 654, in the center of the image, is a small (diameter 5’) open cluster in Cassiopeia: it contains about 60 stars and is located at an estimated distance of 8500 light years. Around the second brightest stars of the cluster it is visible a very small bluish nebula: it is a reflection nebula lightened by the star light, it is catalogued as VdB6. Near NGC 654 it is visible the sinuous shape of a dark nebula, LDN 1343/1344. On the bottom right side it is visible another rich open cluster, NGC 663.
Technical data Optics Tecnosky Apo Refractor LT 130 - 910mm f/7 Mount 10Micron GM2000 HPSII Camera Moravian G3-16200 with external filter wheel 7 positions Filters Baader LRGB 50.8 unmounted Guiding system OAG Moravian M68 with guide camera Moravian G1-0301 Exposure details L 16x600" bin1 -20C R 14x300" bin1 -20C G 11x300" bin1 -20C B 16x300" bin1 -20C Total integration 6.1h Acquisition Voyager, PHD2 Processing Pixinsight 1.8, Photoshop CS5 SQM-L 21.3 Location Promiod (Aosta Valley, Italy), own remote observatory Date 11 September 2018