Optical Accessories

The SV245 zoom eyepiece features 8 high-quality elements and multi-coated optics. This cutting-edge design delivers exceptional sharpness, vivid contrast and true-to-life color correction.

• Advanced Optics: Features 8 high-quality elements, including aspherical lenses and multi-coated optics;
• High-definition 2X zoom: This zoom astronomical telescope eyepiece comes equipped with high-quality 2X zoom capabilities; allowing you to effortlessly achieve double magnification during observation;
• Parfocal Design: Parfocal across the entire zoom range. There is almost no need to refocus when changing magnification.
  Click Stop knob: Each focal length from 8mm to 16mm is equipped with a precise detent. Provides convenience for stargazing in the dark night;
• Dual-lens interface: Features a 1.25" and 2" dual-lens design;
• Compatibility for Astigmatism Corrector Installation: Compatible with all mainstream astigmatism correctors on the market, solving vision focusing problems caused by astigmatism.

With the EDL-24.0, TeleVue has created a survey eyepiece with very comfortable viewing characteristics and maximum contrast.

• 72-degree apparent field of view with high sharpness
• 22 mm eye relief
• Suitable as a survey eyepiece for fast telescopes, but also as a planetary eyepiece for long-focal-length telescopes
• Adjustable eyecup for optimal viewing, even for eyeglass wearers
• 2" barrel diameter with filter thread

Focal length reducer for VSD90ss and VSD70ss with two ED lenses for high-end astrophotography and an illumination of 44 mm for full-frame cameras

• Elaborately designed focal length reducer for the VSD90ss/VSD70ss
• Suitable for a 24x36 full format camera
• Four lens elements in four groups for exceptionally sharp star images
• Guarantees a large illumination of the image field up to 44 mm
• Very sharp stars up to the edge of the field of view
• The VSD90ss thus allows extremely short exposure times
• High-quality standard ‘Made in Japan’
• Reduces the focal ratio of the VSD90ss from f5.5 to f3.9
• Dimensions: 92 mm diameter x 59.2 mm length / Weight: 589 g

The ADC corrects the dispersive effects of Earth´s atmosphere. You will get sharper images of planets and moon.

• The Atmospheric Dispersion Corrector is a revolution in observing and imaging objects.
• Through the use of 2 high quality prisms, it corrects the false colour introduced by the earth´s atmosphere.
• When used for planetary imaging, it changes the clarity of the image dramatically, particularly in the luminence channel when LRGB imaging.
• Adaption is simple through T2 thread on both sides
• You can use the ADC for visual and photography
• You see the result very clear through the eyepiece
• Latest Version

This filter was developed to suppress light pollution for colour and monochrome cameras and offers more balanced RGB colours.

• ltair TRI-RGB is great for broadband objects such as mixed emission / reflection nebulae, comets, dust clouds and galaxies, but it also allows the major emission nebulae lines through. It covers both broadband AND narrowband targets.
• TRI-RGB complements the Altair TriBand and DualBand filters by adding star colours.
• TRI-RGB and works with fast or slow focal ratio telescopes and camera lenses. 
• TRI-RGB is not only for light pollution control. It works very well under dark skies too by enhancing colour purity, airglow and reducing channel crossover in colour CMOS and DSLR cameras.
• Although primarily intended for colour cameras, TRI-RGB can be used for a cleaner luminance channel with a mono camera. 
• High transmission peaks with steep sides enhance contrast, together with almost total suppression of unwanted light, at OD4/5 (0.01%~0.001%) over the majority of unwanted visual wavelengths.

The Askar 0,8x Reducer - corrector for the 160 mm f/7 triplet apo turns the 140 mm apo into a fast astrograph.

• designed for the Askar 160APO
• brings the focal ratio down to f/5.6
• suitable for full frame cameras