Search results for 'fr outdoor binoculars-spotting-scopes binoculars mid-size-binoculars'
- 80 mm apochromatic Refractor with Schott BK-7 and FPL-53 ED glass
- 600 mm focal length (f/7.5)
- Dual-speed 2″ Crayford-type focuser with 1.25″ adaptor
- 8×50 RA erect-image finderscope
- 2″ dielectric diagonal
- 28 mm 1.25″ eyepiece
- Tube-ring attachment hardware and Aluminum carry case
Esprit 80ED APO Triplet Apochromatic Refractor optical tube with 80mm diameter, 400mm focal length, f/5 and equipped with field flattener, rigid case and accessories.
Artesky introduces the new line of APO ED refractors, the new 80mm doublet with 2 element objective, the first is a FCD1-B Ohara (Japan) element while the second is a Lanthanum element. It is possible to reduce it with a factor of 0.8x and bring it to a focal length of 450mm with factor F/5.6 or use it at full focal length with the 1x variable field flattener.