Dr. Harry I. Ringermacher
Physicist, Inventor, Researcher, Visionary
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NGC2403_2-6-13_Ave36crpGradX
By
Judy Keating
July 26, 2016
Full size is
2962 × 1975
pixels
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NGC2903_3-9-13_Ave29PS1GrXredNoise
M77_11-14-12_Ave41PS1