Thread: 2" filters: What thread pitch?
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Old 27-06-2007, 02:10 PM
ausastronomer (John Bambury)
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ausastronomer is offline 		 
Join Date: Mar 2005
Location: Shoalhaven Heads, NSW
Posts: 2,620
Hi,

The thread is 48mm x .75mm pitch. Paint on the threads used for blackening often makes them difficult to attach. Clean the threads up with a metal scribe point and remove any paint globules and it should fit fine.

CS-John B
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