Saturday 10 January 2015

M35 and M45

M35. This open star cluster lies in the constellation of Gemini at a distance of about 2,800 light years . I took this image using a ten inch F 4.8 reflector , PHD auto guiding and an Atik 383L mono CCD camera . I captured five minute sub frames and matching dark frames and combined them with flat field frames to reduce the effect of vignetting in the final image . The total exposure times was 15 minutes using a red filter , 20 minutes using a green filter and 30 minutes using a blue filter .



Two section mosaic of M45 . This mosaic was taken using a ten inch F4.8 reflector, PHD auto guiding and an Atik 383L mono CCD camera .I captured 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 total exposure times was 20 minutes using a red filter , 40 minutes using a green filter and 100 minutes using a blue filter . I stitched the images together using Paint Shop  Pro software