Price

• €449.00 - €9,455.00

Camera thread

•  M48×0.75 (3)

Filter thread

•  M48×0.75 inside final adapter (5)
•  M48×0.75, 2-inch (5)

Focal ratio

•  f/3.8 (1)
•  f/4.5 (1)
•  f/4.6 (1)
•  f/4.8 (2)
•  f/5 (1)
•  f/5.6 (3)
•  f/6.4 (1)
•  f/6.7 (1)
•  f/6.8 (2)
•  f/6.9 (2)
•  f/7 (8)
•  f/7.5 (2)
•  f/7.7 (1)
•  F5.5 (objective lens) F4.5 (plus the reducer) (1)
•  F5.6 (1)

Optical design

•  Doublet (including one ED glass) (1)
•  Quadruplet air-spaced APO (including two ED glass) (4)
•  Quadruplet air-spaced APO(including one ED glass) (5)
•  Quadruplet petzval APO（including one piece of SD glass） (1)
•  Quintuplet air-spaced APO (including two ED glass) (1)
•  Quintuplet air-spaced APO (including two ED glasses) (1)
•  Quintuplet dual ED air-spaced APO (2)
•  Quintuplet flat-field APO (including two ED elements) (1)
•  Quintuplet fully air-spaced Petzval APO (including one ED glass) (1)
•  Quintuplet petzval APO（including two pieces of SD glass） (1)
•  Quintuplet petzval APO（One piece of SD glass, one piece of ED glass） (1)
•  Sextuplet petzval APO (includes 2 pieces of SD glass ) (1)
•  sextuplet with two ED glasses air-spaced APO (1)
•  Triplet air-spaced APO (including one ED glass) (6)
•  Triplet dual ED air-spaced APO (objective lens) Sextuplet refractor for full-frame astro photography (with reducer) (1)