Total lunar eclipse and NGC7538

NGC7538. This deep sky wonder lies in the constellation of Cepheus at a distance of about 9,000 light years . This image was taken using a ten inch f/4.8 reflector , an Atik 383L mono CCD camera, with the addition of PHD auto guiding .I used five minute sub frames with matching dark frames and combined them with flat field frames to reduce the effect of vignetting in the final image . The exposure times was 60 minutes using a H Alpha filter , 25 minutes using a green filter and 20 minutes using a blue filter

28-9-15 Lunar eclipse. The images shown here was taken using a Cannon D50 DSLR camera in prime focus mounted on a ten inch f/4.8 reflector.