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maintains the contrast advancement of the Type 4s while achieving a true field area 82% larger than the 22mm Type 4
99 Lens Coatings: Fully Multi-Coated - XLT Coatings Prism Glass (Type): BaK-4 Prism Coatings: N/A Weight: 44
encouraged other astronomers to assemble their own telescopes and taught workshops on telescope making
Celestron’s optical engineers developed a brand-new 6” RASA with all the same capabilities of an observatory-grade instrument in a grab-and-go package
and a super-soft inner lining
Vintage Tamron SP 90mm f/2.5 lens and hood (Japanese-made) GoTo maintains the contrast advancement ofThis is a vintage Japanese made Tamron SP 90mm f 2. 5 lens. It has a lens hood that is torn, but serviceable. It is good condition, with relatively clean optics and body, and some dust as befitting its age. See the photos. This is just the lens only; no caps, no box, no manual. The Tamron SP AF 90mm f 2. 5 Macro (Models 52B, 52BB, and 52E) is a legendary, high performance manual focus (and later autofocus) lens originally introduced in 1979. Highly
