Wednesday, 21 November 2012

Comet Lulin and M87

Comet Lulin . Comets move against the starry sky This causes complications with image calibration. This image contains three exposures using red, green and blue filters . The exposures were sixty seconds long. This unguided image was taken with an Atik 314L CCD camera and a ten inch f/4.8 reflector:




M87. This giant elliptical galaxy lies at a distance of about 50 million light years in the constellation of Virgo and exhibits a jet.  The jet consists of materiel ejected from the galaxys core that is believed to contain a super massive black hole. This unguided image was taken under bright moon light with clear sky conditions.  A ten inch f/4.8 reflector, an Atik 314L CCD camera. The total exposure time was 15 minutes for each colour channel using 60 second sub-frames: