Brand new 1.83" minor axis telescope diagonal mirror.Flatness is 1/12th wave which is excellent.Coated with high reflecting pure aluminum and then protected with hard silicon dioxide for durability.
Diamond edged for a true 45 degree angle
Material = Pyrex Glass Low thermal expansion
Minor Axis = 1.83" (46.48mm)Major Axis = 1.86" (65.72mm)Thickness = .375" (9.5mm)Weight = 1.4 ounces
Made in our factory located in California.
Filed under: Eyepieces & Accessories