Price

• €479.00 - €7,038.00

Aperture (mm)

•  70 (2)
•  90 (2)
•  110 (3)
•  131 (3)

Filter thread

•  M48 × 0.75 (2-inch) (10)

Focal length (mm)

•  490 (2)
•  609 (2)
•  766 (3)
•  983 (3)

Focal ratio

•  6.8 (2)
•  7 (5)
•  7.5 (3)

Image circle (mm)

•  44 (10)

Optical design

•  Apochromatic triplet (1)
•  Four-element air-spaced apochromat; one ED element (10)
•  Four-element apochromatic (1)