Brand

•  Celestron (3)
•  PlaneWave (14)
•  Sky-Watcher (2)
•  TEC (3)
•  TS Optics (2)
•  ZWO (6)

Price

• €0.00 - €146,700.00

Aperture (mm)

•  70 (1)
•  90 (1)
•  110 (2)
•  131 (2)
•  300 (1)
•  318 (1)
•  350 (1)
•  356 (4)
•  432 (1)
•  500 (1)
•  508 (2)
•  610 (1)

Filter thread

•  M48 × 0.75 (2-inch) (6)

Focal length (mm)

•  490 (1)
•  609 (1)
•  766 (2)
•  790 (1)
•  983 (2)
•  1050 (1)
•  1200 (1)
•  1500 (1)
•  1537 (1)
•  2541 (1)
•  2563 (1)
•  2939 (1)
•  3454 (1)
•  3910 (2)
•  3974 (1)
•  4000 (1)

Focal ratio

•  6.8 (1)
•  7 (3)
•  7.5 (2)
•  8.8 (1)
•  11 (1)
•  f/2.2 (1)
•  f/3 (1)
•  f/3.03 (1)
•  f/5 (1)
•  f/6.5 (2)
•  f/6.8 (6)
•  f/7.2 (2)
•  f/8 (2)
•  f/8 (4000/500) (1)
•  f/11 (2)

Image circle (mm)

•  42 (1)
•  44 (6)
•  52 (2)
•  52 (table); 70 (features) (1)
•  60 (1)
•  60.1 (1)
•  70 (3)

Optical design

•  Air-spaced fluorite doublet (1)
•  Air-spaced fluorite triplet (1)
•  EdgeHD aplanatic SCT (1)
•  Four-element air-spaced apochromat; one ED element (6)
•  Parabolic imaging Newtonian (1)
•  Parabolic Newtonian reflector (1)
•  Ritchey–Chrétien (1)
•  Rowe-Ackermann Schmidt Astrograph (RASA) (1)
•  Schmidt-Cassegrain (1)
•  Terebizh catadioptric; VT99c (1)