Optical Accessories

• Multi-Layer Anti-Reflection coating to reduce star-halos and reflections from camera optical window.
• Batch-tested for consistency.
• Ultra-flat glass by Schott Germany. 1.85mm Glass 30sec parallel, optical polish to MIL Spec. MIL-O-13830.
• High quality dichroic/dielectric coatings. Electron-beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL (central wavelength). No deviation affected by temperature change.
• UV/IR block for imaging - star bloat reduction with refractors.
• Precision CNC machined filter cell for strain-free mounting and freedom from tilt.

With the TS ADC your images of moon and planets as well as your observations near the horizon become significantly sharper and more detailed.

• Corrects the color shift (Dispersion) of our atmosphere - less color fringing, more sharpness and detail
• Convenient operation with eyepiece attached - simply rotate the lever and notice how the sharpness of your view or camera image improves.
• The principle behind the ADC is simple - two prisms are shifted relatively to each other and thereby compensate the color shift of the atmosphere (see image)
• A ring scale allows for reproducable adjustments
• Simple adaptation on the telescope side and eyepiece side via 1.25" receptacle and T2 thread
• Ultraslim design - the TS ADC can even be attached to binoviewers - height without T2 connection parts only 29 mm from T2 to T2
• Usable among others for observation and photography of planets, the moon or double stars

• Batch-tested for consistency.
• High quality dichroic/dielectric coatings. 
• Anti-Reflection coating to reduce star-halos - stackable.
• UV/IR block for imaging - star bloat reduction with refractors.
• Ultra-flat glass by Schott Germany.
• Precision CNC machined filter cell for strain-free mounting and freedom from tilt.

• Batch-tested for consistency.
• High quality dichroic/dielectric coatings. 
• Anti-Reflection coating to reduce star-halos - stackable.
• UV/IR block for imaging - star bloat reduction with refractors.
• Ultra-flat glass by Schott Germany.
• Precision CNC machined filter cell for strain-free mounting and freedom from tilt.

Fast 60mm viewfinder with helical focuser and tube clamps

Key data

• 60mm aperture
• 225mm focal length at a focal ratio of f/3.75
• Illuminated crosshair eyepiece
• Helical focuser (the image does not rotate when focusing)
• Complete tube clamp set with mounting material
• Can also be used as a guidescope

The Altair wide-field binoviewer allows vignetting-free observations with almost all 1.25" eyepieces through oversized prisms.

• Clear aperture 28 mm / prism diameter 30 mm
• 1.25 connection on the telescope
• Prism surface Lambda/8
• Self-centering eyepiece connection for perfect fit of the eyepieces, also with safety groove
• Built-in micro focuser for diopter compensation on each side
• Short design with only 118.5 mm optical path - can be used with many refractors without compensating the optical path
• Robust transport and storage case included in the scope of delivery

The new TriBand V2 Filter

• Anti-Halo coating on both surfaces to reduce reflection artefacts from reducers and camera lenses.
• Increased blocking of UV, IR and unwanted visual range wavelengths. UV OD7 (T0.00001%) Visual OD5 (T0.001%) and IR OD4 (T0.01%) for the ultimate in skyglow blocking. This is an order of magnitude better than foreign filters.
• Higher transmission % of desired wavelengths Ttop 93% (Average 5% higher transmission of target wavelengths than V1). In general a 5% gain on foreign filters.
• Ha at 14nm and Oiii at 34nm FWHM for with less tail-off to reduce unwanted light pollution, whilst keeping transmission high compared to the V1.