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Topics posted by Ian McCallum
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- 2 replies
- 1,683 views
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- 10 replies
- 889 views
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- 17 replies
- 1,027 views
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- 7 replies
- 530 views
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- 210 views
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- 477 views
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- 351 views
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- 464 views
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Windows 8.1 Laptop Threw A Wobbly - Windows 10 Made It Worse! Any Options?
By Ian McCallum, in Discussions - Software
- 3 replies
- 483 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
- 6,681 views
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- 6 replies
- 1,102 views
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- 5 replies
- 751 views