+Graham Posted December 1, 2013 Share Posted December 1, 2013 Hi all. I need a 2 inch filter for an adapter I am making. It doesn't matter what type of filter it is it fact it doesn't even have to have the glass in it. I only need it so I can get the M48 thread correct when I screw cut them. Any one got a broken one they don't want please let me know. Many thanks Graham. Link to comment Share on other sites More sharing options...
BAZ Posted December 1, 2013 Share Posted December 1, 2013 I have a M48 camera lens filter you can have, but I don't know if it will fit anything else. PM me your address. Link to comment Share on other sites More sharing options...
+Graham Posted December 1, 2013 Author Share Posted December 1, 2013 Many thanks Martyn. I can but try it. Thank you. Link to comment Share on other sites More sharing options...
BAZ Posted December 1, 2013 Share Posted December 1, 2013 Poo, I have just been in the attic and retrieved the old Minolta, and it turns out to be a M49 thread. I don't know if that's any good, but I have 49-52-58mm filters. Link to comment Share on other sites More sharing options...
+Graham Posted December 1, 2013 Author Share Posted December 1, 2013 :lol: No worries Martyn. I am pretty certain the 2 inch astro filters are M48. Link to comment Share on other sites More sharing options...
+Ibbo Posted December 1, 2013 Share Posted December 1, 2013 they are Graham M48 x 0.75 or 0.6 I believe there are 2 specs for these and suspect thats why they get "cold welded" from time to time TS link http://www.teleskop-express.de/shop/product_info.php/language/en/info/p3736_TS-Adapter-vom-M48--2--Filtergewinde--auf-M42x1-kurzbauend.html also http://www.iceinspace.com.au/forum/archive/index.php/t-70937.html Link to comment Share on other sites More sharing options...
+Graham Posted December 1, 2013 Author Share Posted December 1, 2013 (edited) Spot on Steve I need an M48 x 0.6 to be certain of getting what I require. Edited December 1, 2013 by Graham Link to comment Share on other sites More sharing options...
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