Secondhand & Stock

M68/M86 negativ-negativ Converter (for M68M63M48p Riccardi Adapter to Esprit100/120/150 focuser) This adapter allows M68 accessories to be mounted INSIDE ESPRIT drawers with M86 threads (Esprit100, Esprit-120 and Esprit150). The first step is to screw the M68 accessories into the M68M86n adapter. This can be done from both sides, depending on the intended use (e.g. optics or other adapters). If the M68 accessory is not too wide, the already screwed together unit can be completely countersunk into the eyepiece extension without loss of light path. It is often bought together with the adapter "M68M63M48p" (see photo below), in order to be able to countersink the Riccardi Reducer in the eyepiece extension without tilting. Scope of delivery: Adapter

Item condition: new and original packed

APM-Telescopes manufactured mechanics, made in Germany, paired with a 2" zenith mirror also of German manufacture with a quality of 1/20 P-V surface provided with the best and most expensive mirroring Germanya a Tafelmeier- 96 % reflection.

Item condition: new, but not original packed

Product description OCAL Electronic Collimator OCAL - New Generation Electronic Collimator The revolutionary way to collimate your instrument is with OCAL, the new smart device that allows you to collimate your Newtonian telescope via your computer in a simple, precise and fast way. The collimation of a reflecting telescope is a problem that astronomers must solve. OCAL electronic collimator is an electronic device developed by Chaoxing Astronomy to calibrate the collimation of reflective telescopes. Its main function is to mark several calibration circles through software to achieve the purpose of collimation. Difference between OCAL and OCAL PRO OCAL OCAL PRO Laptop Use (for Windows) Yes Yes Android/ iOS via OTG Adapter No Yes Newton Collimation Yes Yes SC Collimation No Yes RC Collimation No Yes (test mode) Main Features Each collimator has a very high level of pixel accuracy, thanks to OCAL high quality control. The installation takes place via T2 thread (M42x0.75) to minimize the installation errors. Collimation errors that are often caused by human different visual axis can be completely eliminated with OCAL technology. The product solves the problem of collimation even on large telescopes, thanks to the collimation assistance feature the result is shown immediately on the screen. Quick and easy: Collimate your instrument in just 4 steps! The product can check if the center mark on the primary mirror is made correctly or not. You can also use the screenshot feature to save the result of the collimation. Scope of Delivery: Collimator cable Tips and tricks: If the screen goes black after a few seconds in the Android version. Place your finger on the app icon. Select App Info. In the sub-item Other authorisation, tick the box for Display on lock screen. If the Windows version cannot be installed on your computer, please install the corresponding software from the OCAL download folder. This is called VC_redist.xt.x64 or VC_reddist.x86. Please choose the version for your operating system. In some cases it is necessary to download the missing DLL file from microsoft. Unfortunately, some computers are missing the necessary service packs. You can find the files here: https://www.microsoft.com/de-DE/download/details.aspx?id=26999

Item condition: new and original packed

APM MS 34 x 80 ED binoculars, leather, 4,560 grams, wide angle 37 mm/1000m , suitable for eyeglass wearers, tripod adapter, carrying case, fully multi-coated; Magnification: 34x Objective Aperture: 80mm Diameter of eyepiece: 24mm Coating: FMC Field: 2.1°/37m@1000m/ 111ft/1000yds Exit Pupil Diameter: 2.35mm Exit Pupil Distance: 17.8mm Twilight factor: 52.81 Luminosity: 5.52 Near Focus: 30m Diopter compensation: ±5 Weight: 4576g Body Material: Aluminum alloy Dimensions: 460*250*100mm

Item condition: new and original packed

APM dove tail deluxe 120mm

Item condition: new and original packed

Rowan Saddle with Losmandy/Vixen DV profile

Item condition: new and original packed

adjusting flange for M63 reducer

Item condition: new and original packed

APM-Riccardi Adjustment Flange M82

Item condition: new and original packed

Beobachtungsbuch für Sterngucker

Item condition: new, but not original packed

Omegon Dobson telescope Push+ N 203/1000 Your smartphone phone and this telescope are now 'best friends Experience a whole new feel to exploring the night sky with this Omegon 8 inch Dobsonian telescope together with the Push+ object locator. This telescope can find any planet or deep sky object in the twinkling of an eye! This is made possible by the intelligent Push+ object locator - the telescope communicates instantaneously with your smartphone! The advantages in a nutshell finding newly invented - you can now located any object in the night sky using the Push+ object locator and your smartphone built-in digital encoder - your telescope immediately knows where it is pointing. The software allows you follow every step and locate objects in a jiffy. Bluetooth 2.0 provides a wireless connection to your smartphone - with a range of 10 meters smartphone holder - suitable for all smartphones with a width of up to 75mm software - take control of your telescope with the SkySafari® 4 Plus app for Android, or use programs such as Cartes du Ciel® or Stellarium® with your PC GP receiver - mounts any telescope with a GP rail The optics - high contrast and sharp images thanks to the parabolic mirror Good optics are the heart of any telescope - the 203mm parabolic main mirror here provides a sharp image right out to the edge of the field of view, for a visual experience where you might forget that you are still on Earth and are only 'travelling' with your eyes. A journey into the past - getting into the world of galaxies 203mm of aperture lets you enter a whole new domain - that of the 'deep sky objects', or DSOs. You can observe globular clusters thousands of lightyears away, sparkling like a million diamonds in your telescope. Or even galaxies - 'islands of stars' like our Milky Way. You can observe the following objects with the telescope globular clusters planetary nebulae galaxies open clusters hydrogen nebulae planets, comets and much, much more. Omegon Dobsonians open a new door to the universe - the main mirror in this telescope gathers 75% more light than a 150mm telescope. You can explore hundreds of objects in the night sky. Digital Encoder - a 'satnav' for your telescope Know where you are - the digital encoders on the azimuth and elevation axes tell you just where you are in the night sky at all times. This technology, which is used on large equatorial mounts, is now also employed with this Dobson telescope. But all this would be nothing without a good controller - and this you already have! Smartphone - your way to the stars Your Android smartphone now allows you to keep track of everything yourself - the Sky Safari® 4 Plus astronomy app for Android systems turns your phone into a control centre for your telescope. The coloured display on your smartphone shows the current region of the night sky and allows you to select an object you wish to observe. You can then move the telescope to the target in a jiffy - as you move the telescope in the direction required, you will see a crosshair moving across the star chart. With the right app it's easy You can purchase the SkySafari® 4 Plus app at Google Play. Push+ will not work with Apple iPhones or iPads (iOS operating system) - a separate version for these is due to be released in 2017 Is there also another way that doesn't need a smartphone? Yes, there is! - you can use Stellarium® or Cartes du Ciel® planetarium software. Simply install one of these free programs on your laptop - and off you go, wirelessly, to the stars. Whether smartphone or PC - a Bluetooth 2.0 connection is used to communicate with the telescope. GP receiver The rocker box has a receiver for Vixen style GP rails. This means you can connect most telescopes with GP rails to the rocker box and benefit from the Push+ system. This works best with Newtonian reflector telescopes of up to 8 inches in diameter. Ensure your exploration of the night sky is always successful with Push+. Note: smartphone and App are not included. Our expert comment: The Push+ object locator is also available as a mount (rocker box) with GP receiver for your own telescope OTA (for up to 8 inches aperture). In the box: Tube Rockerbox 2x eyepieces 10mm, 25mm Kellner Red dot finder

Item condition: new and original packed

Product description TS Optics Off Axis Guider with Zeiss M68x1 connection - short design Off axis guider for large cameras This big off axis guider with Zeiss M68 thread connection is a consequent further development of the short TSOAG9. This model is designed for heavy cameras with large sensors. With an optical length of 16.7 mm, it also needs not much back focus. But nevertheless, it offers all options needed for professional tracking. Advantages and characteristics M68x1 Zeiss thread on both sides Length 16.7 mm only (w/o male threads) Choice of three positions (120° each) for the sidewards T2 guiding cam adapter, thus you have always a good framing option for the sensor Free aperture of 62.5 mm: even large camera sensors can be used without vignetting Massive design: all connections are screwed, no clamping. This is ideal for heavy cameras. The guiding focus can be adjusted individually The prism can be shifted in order to reach an optimal position relative to the main sensor Internal surface with anti-reflective thread Three connections for the prism tower Due to the massive design, this OAG has no rotation functionality that could compromise the solid connection of heavy cameras. Three positions (3 x 120°) can be used for the guiding tower. Inappropriate prism positions relative to the main sensor (e.g. in front of an edge) are prevented. If the guiding cam collides in one position with the main camera, another position can be chosen. The two holes not in use can be closed to prevent stray light from entering the system. Short design The off axis guider is consequently designed for short design without compromising its stability or ease of use. All elements can also be operated when wearing gloves. Distances to prism Distance from female M68 thread to prism center: 11.5 mm Minimum distance from prism center to T2 thread: 27 mm Delivery contents Off axis guider

Item condition: new and original packed

Swarovski Optik Fernglas NL Pure 8x42 Demoglas

Item condition: used Item with possible small cosmetic deffect, but every function works perfect