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Old 16-01-2007, 03:44 PM
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Doug is offline
Join Date: Mar 2006
Posts: 645
Arther, You do not need an IR filter with the DSI. I have a screw on one, but I use it more to keep dust out rather than anything else. I intend replacing it with a light polution filter when I fix up a few other issues that I have at the moment. Those images posted in the 'PEC, am I missing something' thread were done with an IR blocking filter of the screw in type.(better pass band than the Meade version.)

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