The Swan Nebula
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M17 - The Swan Nebula in Sagittarius
by Bob and Janice Fera
Officina
Stellare RC-360AST 14" f/8 Ritchey Chretien Cassegrain
with two-element field flattener
Apogee Alta U16M CCD Camera
Astrodon 5nm H-alpha Filter
270 minutes
Sub Exposures: 30m
Image acquired with CCDAutopilot
Processed in CCDstack and Adobe Photoshop
Taken June 3-4, 2013 from Eagle Ridge Observatory, Foresthill, CA
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