LENSES FOR C/CS MOUNT CAMERAS

The lenses below are C-Mount lenses and will fit any CCTV, C or CS mount camera, like the PD Video Cameras, Mintrons, Stellacam, Mallincam, etc.

The renowned Computar 4mm f1.2 lens. The "best lens" for video meteor astronomy, in tests by the International Meteor Organistion (IMO). Their full paper "CCTV lenses for video meteor astronomy" is available here The good quality used lenses that I used to sell (at £39) are now difficult to obtain. So now I sell only the brand new Computar lens, complete with lens caps. Made in Bangladesh. With PD Video cameras: the 4mm focal length gives a diagonal field of view of about 91 degrees. Maximum aperture of f1.2 gives a limiting magnitude of about 11 mag. Length: 37mm, diameter 34mm. Aperture variable from F1.2 down to zero (no stop markings). Computar 4mm f1.2 Lens (New): £59.00 (plus £5.00 UK post)

BEST LENS FOR VIDEO METEOR ASTRONOMY

Good quality 35mm F/1.7 C-mount lens. Brand new, boxed, supplied with front and rear lens caps. With PD Video cameras: field of view of about 12 degrees or so. Iris of f1.7 gives a limiting magnitude of about 13.5 mag with the PD Video cameras. Length: 52mm, diameter 42mm. Aperture variable from F1.7 down to f16. Fujian brand (China). 35mm f1.7 Lens: £24.00 (plus £5.00 UK post)

Good quality 25mm F/1.4 C-mount lens. Brand new, boxed, supplied with front and rear lens caps. With PD Video cameras: field of view of about 12 degrees or so. Iris of f1.4 gives a limiting magnitude of about 14 mag with the PD Video cameras. Length: 44mm, diameter 36mm. Aperture variable from F1.4 down to F8 and closed. Fujian brand (China). 25mm f1.4 C Mount Lens: £24.00 (plus £5.00 UK post)