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[jmstonge]

I got an old vintage MTO 1000A reflector lens, which is essentially a catadioptric telescope with a M42 mount. I have it fitted with a Canon M with a M42 to Canon M adapter. This model takes the 120 mm threaded filters, and I am trying to find a filter set, to better observe the moon, and hopefully one to cut the UV and haze. I am also trying this lens out with the Turist spyscope so it acts directly as a telescope getting direct light to the eye.  Any suggestions on where to go to find these size threaded filters, as they are usually only sold as sets on ebay and many retailers do not have this antique lens filter.