OTA Telescopes (only tube assembly) group by refractors, reflectors, catadioptrics and astrographs. In these sections you can view telescopes without mounts. Great optics for astrophotography such as Astro-Physics, Takahashi, Vixen and more.
SkyWatcher Explorer 200/1000 Newton reflector optical tube features a large 200 mm primary mirror, 1000 mm focal lenght (F/5), 9x50 finder view, Crayford focuser and 28 mm eyepiece.
Kit composed by the Vixen VC200L Aspherical Cassegrain OTA and the Reducer HD 0.79x focal reducer. High-performance system suitable for modern large-size CCD and CMOS sensors with tiny pixels. Contact us for info about connecting your DSLR or your CCD / CMOS cameras.
Kit composed by the Vixen SD81S doublet apochromatic refractor, the SD Flattener HD field corrector and the SD Reducer HD focal reducer. With this kit you will get an high performance flat-field astrograph capable to cover the full-frame image format. Double focal length for maximum versatility!
The Vixen SD81S apochromatic refractor is completely made in Japan and delivers an high quality SD doublet lens with 81 mm of aperture and 625 mm focal length (focal ratio F/7.7). You will find the best optical quality as usually delivered by Vixen along a sturdy yet ligh optical tube. Weight of the optical tube only is 2.3 Kg.
Vixen's AX103S, F/8.0 Refractor features a three element objective lens, incorporating a central ED lens. This reduces chromatic aberration and yields high contrast images. In combination with the rear Field Corrector Lens, the AX103 Refractor yields clear images to the edges of the field of view.
Astro-Physics 130 Starfire GTX OTA apochromatic refractor with rings (55RING2) and Losmandy dovetail plate (SBD12). Waiting for the next production run! Contact us for quotation and orders.
Apochromatic OTA Astro-Physics Starfire GTX features 130mm diameter, 819mm focal lenght (F/6.3). Hybrid-designed triplet lens: air / oil spaced with all spherical surfaces. Machined aluminum tube assembly with dewcap fully retractable and 3.5 " I.D. focuser with FeatherTouch Micro 9:1 dual-speed reduction. Out of stock, waiting for the next production...
Astro-Physics Stowaway 92 F/6.65 apochromatic refractor with 2.5" FeatherTouch focuser. Diameter 92 mm, focal length 612 mm (F/6.65). Air-spaced triplet apochromat with Hoya FCD-100 central lens. Machined aluminium tube, fully baffled, with flat black interior and engraved retaining ring. FeatherTouch FTF2535 focuser with Feather Touch Micro 9:1...
Sharpstar presents a new compact astrograph called 130 F2.8 HNT, a mirror astrograph composed by a primary hyperbolical mirror F/2.8, a standard secondary mirror and a three lens corrector capable to cover a 44 mm imaging circle, i.e. up to the full-frame image format. This new astrographs features a 130 mm primary mirror with an effective focal length...