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Old 14-04-2011, 02:05 PM
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erick (Eric)
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erick is offline
 
Join Date: Dec 2006
Location: Gerringong
Posts: 8,548
Bahtinov mask - acryclic - for 8" GSO newtonian

Surplus to my needs, I already have an MDF one made for my 8" f5. This one came with a scope I bought. My current mask fits it, so this one for sale.

Black acryclic. Probably 2mm thick, but my ruler suggests 2.5mm? I'm sure it isn't 3mm thick.

Fits snugly inside the end of a GSO 8" Newtonian reflector, but not tightly. OD of mask is nominally 221mm, I measure 220mm. It also says "f4" but I'm confident it will fit into the end of any GSO 8" newtonian reflector (but buyer must check that their ID is more than 220mm).

Previous owner has glued a knob neatly in the centre to assist with placing and removing - very effective, but it may make posting a pain. If a buyer needs posting, I'll discuss whether I should try to lift the knob off for easier postage and the buyer can re-attach, if they want.

Pickup in Melbourne would be preferred.

$12.50 plus pack and post.

PM please. Thanks for looking.
Eric
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Last edited by erick; 18-04-2011 at 10:22 PM.