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Old 20-11-2011, 08:33 PM
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Merlin66 (Ken)
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Merlin66 is offline
 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,927
If these full aperture filters are fitted securely to the telescope...then they are 100% safe both for visual and imaging.
The solar activity continues to increase; now's a great time to start observations..
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