My Astro Images: NGC7009 - 18.09.2011 RkBlog Astro Images All images Venus Mars Jupiter Uranus Saturn Solar Lunar Deep Sky NGC7009 - 18.09.2011 50 x 60 sec UHC-S, bin 2: He-II bin 2: H-alpha: O-III: Ha,O3,O3: Ha,O3,He2 r Star Analyser spectrum:
NGC7009 - 18.09.2011 50 x 60 sec UHC-S, bin 2: He-II bin 2: H-alpha: O-III: Ha,O3,O3: Ha,O3,He2 r Star Analyser spectrum:
