High quality single lenses and achromatic systems of two lenses. Ideal for experiments and self-made optical instruments. Diameters between 18 and 50 mm, a whole range of different focal lengths. All lenses are surplus from production lines of optical instruments. 531+532OMG and 550-569OAL Diameters: 18 to 50 mm Focal lengths: +26.5 to +250 mm
High quality lenses made from acrylic glass. The budget solution for all optical experiments. Diameters between 13 and 62 mm, a whole range of different focal lengths. C: convergent lens D: divergent lens
The main mirror used in our Newton Telescope: made by BAADER Planetarium from tempered float glass, with aluminium and quartz coating. An excellent mirror for DIY telescopes! Mirror diameter: 70 mm Thickness: 5 mm Focal length: 450 mm
A high quality flat mirror made from tempered float glass, with aluminium and quartz coating. No ghost images because the reflective surface is on the front of the mirror!
Primary Mirror assembly for Astromaster 130 / 130MD 114 & 76 mm & PowerSeeker 114 models. You may prefer to buy the mirror already in the metal tube. See below
Tested in Germany under the stringent safety requirements of DIN EN ISO 12312-2 : 2015-11 and certified 100% safe for solar observation. Watch Solar Eclipses, Sun Spots, Planet Transits, crossing aircrafts and satellites.
With Celestron StarPointer & 25mm EyePiece Ideal for replacement of a faulty optical tube or to put on any compatible mount
Choose To Extend Your warranty for only £49.00 A reducer will brighten your view, seeing more objects & the view is optimised for imaging (photography). A lens hood will shield stray light & dew fall.
Top quality C6 Optical Tube Assembly without finderscope or visual back, diagonal or eyepieces. Perfect if you have damaged a telescope's optical tube. This OTA does not come with a mount or tripod.
C8 Optical Tube Assembly as used in the best selling Celestron Nexstar 8se. Sold without eyepiece, visual back or finderscope. Ideal replacing a damaged telescope or want to upgrade to the magic 8 inch aperture. The tripod socket on this OTA makes it ideal for terrestrial use as well.
New 6" SCT OTA from an Evolution 6. Identical to the Celestron 6" SCT OTA with a different position for the dovetail The dovetail can be moved from the side (suitable for the Evolution mount) to the bottom making it suitable for equatorial mounts. Includes StarPointer Red Dot Finder
C8 Optical Tube Assembly as used in the best selling Celestron Evolution 8. Sold without eyepiece, visual back or finderscope. Ideal if you have a damaged telescope or want to upgrade to the magic 8 inch aperture.
A kit for a prism made from acrylic glass. Cast acrylic glass blank with all necessary polishing material to produce a highly transparent prism, instructions included. Suitable for children.