Antlia Filters 50 mm round unmounted LRGB V-Series PRO filter set
Antlia Filters 50 mm unmounted H-alpha 3 nm PRO narrowband filter
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Astro-Physics 0.75X Photographic-Visual Telecompressor (focal reducer). It reduces the native focal length of the system on which it is used by 0.75 times. For instance , a F/6 refractor will be transformed in to a faster F/4.5 optical system.
This focal reducer is designed for Vixen's VMC200L, VMC260L and VMC330L reflector telescopes. Reduces focal length by 0.62x; Changes VMC200L to F/6, VMC260L to F/7.1 and VMC330L to F/8.1. Weight: 183 g. Backfocus: 63.5 mm.
The Vixen SD Reducer HD Kit includes the SD Flattener HD filed flattener, the SD Reducer HD aplanatic focal reducer, the EX Tube 66 extension tube and the specific extension tube to be used along the SD81S. Complete correcting and reducing lens system for Vixen SD81S, SD103S e SD115S optics.
The Vixen SD Reducer HD is an aplanatic focal reducer desigend to work with Vixen AX103S astrograph and Vixen VC200L Visac catadioptric. When used together the Vixen SD Flattener HD it can be used also onto Vixen SD optics. It delivers high contrast flat field over an imaging circle up to 44 mm, perfect also for full frame (24x36 mm) CCD/CMOS sensor.
The Vixen Reducer HD Kit for Vixen FL55SS apochromatic refractor includes the Flattener HD field flattener for FL55SS, the Reducer HD aplanatic focal reducer for FL55SS and the EX Tube 66 extension tube. Complete correcting and reducing lens system for Vixen FL55SS fluorite apochromatic refractor. Advanced Vixen AS Coating with 99.9% light transmission on...
SkyWatcher 0.85x reducer / corrector for Evostar 72ED. Focal reducer designed to improve Evostar 72 ED refractor performance. This field flattener features M48 thread.
Vixen 0.67x focal reducer for ED81S, ED103S, and ED115S refractors. Illuminated field of 35 mm, corrected field ~ 20 mm. Threaded M60 male for telescope attaching, Threaded M60 female for camera attaching.
The Vixen Reducer HD for Vixen FL55SS apochromatic refractor includes the aplanatic focal reducer for FL55SS only. In order to correctly use it you will need the field flattener Flattener HD for Vixen FL55SS sold apart or in kit. Advanced Vixen AS Coating with 99.9% light transmission on each surface.