William Optics UniGuide 50 mm Ultra A compact guide telescope with a 50 mm doublet lens, 200 mm focal length and f/4 focal ratio. Ultra is one of the manufacturer's listed colour options.
Manufacturer model: William Optics UniGuide 50 mm Ultra · Specifications checked against manufacturer data on 2026-11-03
A compact guide telescope with a 50 mm doublet lens, 200 mm focal length and f/4 focal ratio. Ultra is one of the manufacturer's listed colour options.
Dimensions and application
Manufacturer-listed tube length is 252 mm and the current product table lists 0.50 kg total weight. Use with a compatible guide camera and mounting arrangement.
The 1.25-inch RotoLock secures a compatible guide camera. An M48 male thread lies beneath the RotoLock, and William Optics lists an M48 extender. The fully multi-coated objective and integrated slide base suit a compact guide-camera installation on a compatible William Optics handle.
Compatibility notes
Ultra is listed as a colour variant on the official UniGuide 50 page. Do not confuse with a different guide telescope.
Additional specifications
Colour variant
Ultra
Included adapters
M48 to 1.25-inch RotoLock; M48 extender
85732
Datasheet
Opening (mm)
50
Cameraaansluitingen
1.25-inch RotoLock; M48 male thread beneath RotoLock. Pitch not specified.
Brandpuntsafstand (mm)
200
Openingsverhouding
4
Type focuser
Threaded
Montage-interface
Integrated slide base for compatible William Optics carrying handles.
Coating objectief
Fully multi-coated
Optisch ontwerp
Doublet lens
Totaalgewicht (kg)
0.5
Tubuslengte (mm)
252
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William Optics UniGuide 50 mm Ultra A compact guide telescope with a 50 mm doublet lens, 200 mm focal length and f/4 focal ratio. Ultra is one of the manufacturer's listed colour options.
Manufacturer model: William Optics UniGuide 50 mm Ultra · Specifications checked against manufacturer data on 2026-11-03
