Topic Tag: Sun H-Alpha Solar Observing Photography Sunspot Prominence Search for: Welcome to Canterbury Astronomical Society › Forums › Topic Tag: Sun H-Alpha Solar Observing Photography Sunspot ProminenceViewing topic 1 (of 1 total)TopicVoicesPostsLast Post Solar Observing Started by: Cameron McEwing Views: 137 in: Astronomy (Public Forum) 34 5 years, 8 months ago Cameron McEwing Viewing topic 1 (of 1 total) Read more