Optical Accessories

The mirror diagonal allows the use of large 3" eyepieces on very long focal length telescopes to achieve a large field of view.

• Connection telescope side - 3" barrel
• Connection eyepiece side - 3" receptacle with ring clamp
• Clamping of 3" accessories by using knurled screws
• Adapter for 2" with ring clamp is included in the scope of delivery

Sky-Watcher presents the new Emerald 22mm eyepiece, designed for astronomers who prefer high contrast, a large field of view and maximum clarity. It features a 7-lens premium system....

• 22 mm focal length
• 82° apparent field of view
• Broadband anti-reflective coating and blackened lens edges for a bright, high-contrast image without reflections
• 18 mm eye relief is well suited for spectacle wearers
• Soft rubber eyecup for comfortable observation
• Thread for 2" filters

The corrector from Skywatcher reduces the focal length of the Evostar-100EDX and Esprit-70EDX and improves the image in the field.

• Suitable for Skywatcher Evostar-100EDX and Esprit-70EDX
• Shortening factor 0.92x
• Is screwed to the focuser
• Connection at the camera side - M48x0.75 male thread
• Working distance - 55 mm

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.