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J Patrick Johnson | all galleries >> Astronomy Pages >> Celestial Images > M17 The Swan Nebula
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M17 The Swan Nebula

Captured with an AT66ED refractor piggybacked on a CPC1100 on a Mitty wedge. I used a William's Optics 0.8x focal reducer, bringing the f/ratio down to f/4.8. Canon XSi DSLR with Gary Honis mod.

45x120 second exposures with darks and flats. Processed in Images Plus and Photoshop CS3

other sizes: small medium large original auto
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