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meade expert
15-01-2013, 10:20 PM
HI all

Does anyone know what spacer ring I need to couple a 0.8x williams optics FR/ FFII ?? to use with a CCD camera? Mine has 20mm to ccd from front Threads.:confused2:
meade expert
18-01-2013, 10:41 PM
Found out its 55mm:)