These are superb and only available here at Surplus Shed! Glass, air-spaced achromatic optics, multi-coated! 127mm clear diameter with a focal length of 1200mm making this an f/9.4. The aluminum barrel has a diameter of 145mm (OD), 46mm thick, and an ID of 135mm. The lenses can be easily removed (if needed) by unscrewing the retaining ring. An incredible price that may not last long!! NEW! Edmunds sells a similar one for over $1000. This is the objective you need for a quality refractor scope or an awesome binocular telescope. Wollensak brand, Quality optics since 1899
Please Note: This special sale price is for a pre-order to be shipped in about 45 days. This week only, Only these orders will be filled. There will be no extras.