TS Adapter for recessed adaptation of correctors in the focuser UNCN3M82 The TS V-Power focuser with the M82 threaded connection on the camera side accepts large correctors up to 3" body diameter. This adapter allows correctors to be connected via the M68x1 male thread on the corrector. The corrector is recessed into the draw tube, saving valuable optical path. Tilting, as is possible with clamping, is eliminated by the screw connection. On the camera side, the adapter has an M48x0.75 male thread for further adaptations. How the adapter works and what to consider: ♦ Screw the corrector into the M68x1 female thread of the adapter. ♦ Then screw the adapter with the corrector into the M82x1 female thread of the focuser. ♦ Please consider that the adapter needs 9 mm travel (length of the M68x1 female thread and overall length of the adapter) - these 9 mm must be subtracted from the working distance of the corrector. The advantage is that all larger correctors offer a longer working distance. Application example: TSKORW3 on a 325 mm f/4 Newtonian with this adapter: ♦ working distance of the KORW3 Wynne corrector is 64 mm ♦ 9 mm optical path to be subtracted - so 55 mm remain from the M48x0.75 male thread on the adapter. Ideal therefore for all photo adaptations ♦ The exact working distance can be established with suitable adaptations and tuning rings.
iOptron 4.5 kg Counterweight for iOptron CEM25 and iEQ30 The counterweight fits many iOptron mounts, but also Vixen, Celestron and Skywatcher mounts with D=20 mm counterweight rods.
EA20-205P2.0" to 1.25" Eyepiece Centering Adapter; Threaded for 2" filters (and long enough the 1.25" barrels wont hit the filter) Nylon-tipped thumb screw for non-marring binding, angled down to push the eyepiece down into the adapter Zero height so extra in-travel of the focuser will not be necessary (important when little in-travel is left) Inserted accessories are self-registering with perfect alignment to the focuser The adapter is self-registering to the focuser for perfect alignment Accommodates all 1.25" accessories, even with small variations in outside diameter - no accessory will be loose or wobble!
Atlas Coeli 1950.0 by Antonin Becvar; 1953; in Czech language? With stencil! Size 60 x 42 cm. 15 maps s. Description with stencil! Atlas eclipticalis 1950.0. Author Bečvář, Antonín, 1901-1965 Edition [2., doplněné vyd.]. Notes At head of title: Československá akademie věd. Transparent grid inserted. Includes bibliographical references (page 2). Publication Date 1964 Publisher Praha Format [4] pages, 32 color charts 66 pages Language Czech Subjects Stars -- Atlases Genre Atlases. Source Library Catalog
Item condition: used, but with visible cosmetic markings
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Product description Classy CNC Tube Rings with elegant design and uncompromising quality A beautiful telescope should be attached to the mount with perfect tube rings, too. Here, a beautiful look is as much in demand as gut technical properties. The CNC tube rings fulfill these requirements. The tube has only 8 mm distance to the bottom side of the rings, thus the mount is not additionally loaded by unnecessarily long levers. The tubes have plane support surfaces on both sides with five female M6 threads on each side. 1 M6 thread in the middle, 2 M6 threads at a distance of 19 mm from the middle, 2 M6 threads at a distance of 30mm from the middle. With this, you can easily attach dovetail bars and accessories. With only 5 mm thickness, the rings are lightweight yet very stable A thin layer of felt was put on the inside of the tube rings for avoiding scratches. However, the tube is clamped very well in the rings and does not change position. That is important if a guiding scope is attached to the rings. Delivery contents Set of 2x Aluminium CNC Tube Rings
APM-JK CNC-tube rings for tube diameter 136 mm. Stable, easily swivelling open matal clamps for a optimal connection between telescope and mount. Suitable for telescope tube with 136 mm outer diameter. Easy and quick mounting of the rings to the telescopes. Felt coating at the inner side prevents from scratches on the tube.
Altair Nikon DSLR lens adapter for Hypercam fan cooled camera Attach your Altair Hypercam CMOS camera to a Nikon photographic lens for wide flat field astrophotography. You can insert 2" filters, too. Rotates for framing and you can move the adapter back and forth on the dovetail bar for balancing. On top of the adapter are two holes for mounting an universal guide scope bracket. Included is the adapter for Hypercam Fan-Cooled models with 12.5mm sensor to flange distance. Features Full frame clear aperture! Fits all Nikon F-mount bayonet lenses. Internal 2" filter mounting position for CLS filters, etc. Sealed chamber for dust control! Base has mounting stalk for back or forwards attachment to 200mm dovetail plate - enabling balance even with large lenses. Includes standard 200mm dovetail bar with multiple 1/4" M6 holes and slots. Holes for mounting an universal guide scope bracket. Delivery contents Nikon lens adapter Adapter for Hypercam fan cooled models