Binocular viewer and accessories:

Baader Glasspathcorrector for binoviewers The corrector is more than just a simple barlow lens that compensates for part of the optical path of the binoviewer. First of all, the corrector corrects the color fringes created by the prisms of the binoviewer. Contrast and sharpness of the image increase. Calculation of the shortening factor: The corrector is installed directly in front of the binoviewer. If the corrector is moved further away from the binoviewer, the magnification effect and path compensation increase. ♦ GWK 1,25x: The optical path of the binoviewer is shortened by 18 mm. ♦ GWK 1,7x: The optical path of the binoviewer is shortened by 41 mm. ♦ GWK 2,6x: The optical path of the binoviewer is shortened by 84 mm. Adaptation to the telescope: Adaptation to the binoviewer is simple. The corrector is simply clamped between the T2 female thread and the T2 male thread. The adapter is automatically centered. For the connection to 1.25" or 2" we recommend suitable Baader adapters which are linked under the accessory recommendations. Further application possibilities: The correctors are not only suitable for the Baader Maxbright binoviewers. Also for other binoviewers or adapters, prisms ... the correctors can be used. Whenever you cannot reach the point of focus with a new accessory, the Baader Glass Path Corrector can be the saving solution.

Item condition: new and original packed

Product description Altair 30mm Binoviewers Altair Premium Binoviewers have oversized 30mm prisms, allowing a full 28mm clear aperture for maximum performance. This makes it more viable for use with higher-end eyepieces like the APM24mm Ultraflat with 30mm field stop as well as eyepieces with smaller field stops of around 27mm, such as the Televue 24mm Panoptic, and Explore Scientific 24mm 68°. Altair Binoviewers have a 1.25" barrel diameter nose-piece to fit into your standard telescope diagonal mirror or prism diagonal. They take up 118.5mm optical path, therefore when used with a diagonal, will usually require a Barlow lens to create enough "in-focus". This applies to most telescopes. While Barlow lenses serve to shorten the optical path to accommodate the binoviewers, other factors such as your the amount of inwards travel of your focuser, the light path length of you diagonal and the telescope design will also influence whether or not the binoviewers will come to focus on your system. SCT's or Schmidt Cassegrains may not always require a Barlow lens, because the mirror shift focusing range is quite large. Since binoviewers are predominantly used for solar system observing, the use of Barlow lenses is an advantage, because it allows you to maintain the more generous eye-relief of longer focal length eyepieces, making the placement of your eyes less critical relative to the rear lenses. This enables binoviewer owners to still achive medium to higher powers quite comfortably. Some Altair refractors have a "binoviewer friendly" design with a removable extension, which serves to shorten the distance between focuser and front lens, making bino-viewing without a Barlow possible too. Quality and performance: Altair binoviewers are are individually collimated on an optical bench for best performance. Using two eyes for viewing the moon and planets gives a much more immersive experience than a single eyepiece, with an increase in visible detail which, although unquantifiable will always be better than a single eyepiece. Almost all users of binoviewers comment they can see "half again" as much detail with binoviewers than with a single eyepiece. BK7 glass is used. BK7 gives better performance with binoviewers than the usual BK4 used in binoculars. Scope of delivery: Bino

Item condition: new and original packed

TecnoSky Wide-Field Bino 28mm

Item condition: new and original packed