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Topics posted by Ian McCallum
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Refractor For Purely Visual Astronomy? 1 2 3 4 8
By Ian McCallum, in Getting Started Equipment Help and Advice
- 183 replies
- 11,431 views
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Wratten Filters for CA Correction in Achromats? 1 2 3 4
By Ian McCallum, in Getting Started With Observing
- 97 replies
- 6,589 views
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- 76 replies
- 4,109 views
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- 66 replies
- 2,742 views
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- 54 replies
- 2,417 views
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- 41 replies
- 1,864 views
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- 39 replies
- 1,228 views
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- 33 replies
- 1,327 views
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- 27 replies
- 1,337 views
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- 26 replies
- 1,736 views
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- 24 replies
- 674 views
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Orthoscopic vs BST EP's for Planetary Observing?
By Ian McCallum, in Getting Started Equipment Help and Advice
- 23 replies
- 1,026 views
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S Shaped Chain Of Bright Stars Near Orion's Belt?
By Ian McCallum, in Getting Started With Observing
- 21 replies
- 1,562 views
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- 21 replies
- 720 views
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- 21 replies
- 739 views
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- 19 replies
- 836 views
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- 19 replies
- 1,056 views
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- 18 replies
- 2,012 views
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- 17 replies
- 1,014 views
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- 16 replies
- 1,228 views
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- 16 replies
- 768 views
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- 15 replies
- 649 views
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- 15 replies
- 390 views
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- 13 replies
- 694 views
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- 13 replies
- 1,261 views