Thread: Celestron 4" Maksutov-Cassegrain OTA
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Old 20-09-2007, 12:17 AM
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g__day (Matthew)
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Arrived safe and sound - figuring what backing to use at the back of the OTA to attach a standard small prism - its is a 1.25" diammeter ring needed - I can't find where I put the calipers!