CCD Mosaics

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May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sass...21...57g&link_type=abstract

The Society for Astronomical Sciences 21st Annual Symposium on Telescope Science, held May 22-23, 2002, at Big Bear, CA. Publish

Astronomy and Astrophysics

Astronomy

Scientific paper

First-generation CCD cameras were relatively small (32k pixels to 90k pixels). Photographic film, in comparison, has literally millions of indivi- dual grains. In a practical sense, however, the resolution of a typical film image is about six megapixel. Nevertheless, this is over 60X larger than a first-generation camera. So while the high sensitivity of a CCD camera made it very effective for high resolution imaging, it could not compare with photographic film for wide field imaging.
Commercially available CCD cameras now range up to 16 megapixel. Unfortun- ately, these large arrays come at an extremely high cost. Fortunately, 1-2 megapixel cameras are available in a price range within reach of many amateur astronomers. With this size of array, building 6-20 megapixel or larger mosaics is quite possible using suitable equipment.

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