Parts and Accessories

Precision Electronic Collimator for Newtonians, Ritchey-Chrétien telescopes (and SCT's, with limitations) High-Resolution CMOS Sensor Real-Time So...

Optec engineers have developed a completely new concept for combining telescope focus and camera rotation functions into a single robust, yet compa...

Optec engineers have developed a low profile, yet extremely robust 3-inch focuser for telescope installations where back-focus is at a premium. Wi...

150mm aperture, f/4 Research grade, 1/8 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

150mm aperture, f/5 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

150mm aperture, f/8 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

Recommended for the 150mm Dobsonian mount Smooth, controllable altitude motion CNC machined in the UK Description Specifications In the Box War...

200mm aperture, f/4.5 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descript...

200mm aperture, f/6 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

Recommended for the 200mm Dobsonian mount Smooth, controllable altitude motion CNC machined in the UK Description Specifications In the Box War...

250mm aperture, f/4.8 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descript...

250mm aperture, f/6.3 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descript...

Recommended for the 250mm Dobsonian mount Smooth, controllable altitude motion CNC machined in the UK Description Specifications In the Box War...

3" to 2" push fit 10mm back focal distance Individually machined to order in the UK Description Specifications In the Box Warranty 3" to ...

300mm aperture, f/4 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

300mm aperture, f/5.3 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descript...

Recommended for the 300mm Dobsonian mount Smooth, controllable altitude motion CNC machined in the UK Description Specifications In the Box War...

350mm aperture, f/4.7 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descript...

Recommended for the 350mm Dobsonian mount Smooth, controllable altitude motion CNC machined in the UK Description Specifications In the Box War...

35x49mm minor/major axis 10mm thick Plate substrate Precision ground and coated in the UK Description Specifications In the Box Warranty ...

400mm aperture, f/4 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

Recommended for the 400mm Dobsonian mount Smooth, controllable altitude motion CNC machined in the UK Description Specifications In the Box War...

500mm aperture, f/4 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

50mm Aperture 90-Degree Angled Viewing Design Fully Coated Optics Reticule Crosshairs for Centering Quick-Release Dovetail Mounting Shoe Spring-Lo...