Description
Low-Profile Focusing Rotator System
Optec engineers have developed a completely new concept for combining telescope focus and camera rotation functions into a single robust, yet compact package. Rather than simply adding a rotator onto the end of a focuser drawtube, Gemini was designed from inception with a rotating drawtube providing superior strength and rigidity for heavy camera payloads. Featuring four lead-screws and four linear bearings, Gemini can easily handle 10-kg. (22-lbs.) payload packages without flexure. Full 360-degree rotation is a built-in function of the Gemini with a full 1/2″ of linear travel. At the center of travel, Gemini measures a mere 2.45″ in thickness.
Robust Compact Design
To maintain a flat, rigid base for heavy camera packages, Gemini’s shell consists of two parallel plates machined from MIC-6 tool plate providing flatness within 0.001″ (25 microns). Seven precise stand-off spacers maintain the 2.2″ separation of these plates. The rotating drawtube is moved linearly with 1/2″ of total travel using a premium timing belt driven by a high torque stepper motor. The entire package is accented with a beautiful carbon fiber wrap. Dual RJ45 connectors provide connection to the Gemini Control hub. The independent rotating drawtube is supported by a custom X-cage bearing system supported by large, 6mm chrome ball bearings.
Support for Multiple Telescopes
Featuring identical OPTEC-4300 mechanical interfaces front and back, the Gemini can be easily fitted to most any large telescope OTA. Recessed oval point setscrews provide three-point direct contact with the heavy wall OPTEC-4300 dovetail mount. Gemini’s clear aperture of 3.75″ is maintained through each adapter, passing even large light cones through to the camera image plane without vignetting.
On the camera side, a typical configuration might include a 4300 receiver for the Optec-DSI 3.5 High Performance spacer sets configurable to 1/4″ increments when additional spacing is needed.
Currently designed telescope adapters include support for the AG Optical iDK’s, Ceravolo Optical Systems Astrographs, Meade and Celestron 10-inch and larger class SCT, and Plane Wave Secure-Fit.
| 19750 |
Gemini 96 FocusingRotator Gemini Focusing Rotator provides both focus and rotation in a single device. Wide 3.75” opening designed for very large payload systems with limited back-focus. Overall thickness is 2.25” with ½” of focuser travel. Package includes Gemini controller, Hand Controller, power supply, cables and Pelican type case. Order OPTEC-4300 adapters for telescope and camera side connections. Stock item #19830 OPTEC-4300 to DSI 3.5x24tpi threaded adapter is now included for the camera side mount.See Optec-DSI 3.5x24tpi threaded extension section for spacer selections.[OPTEC-4300 female dovetail // OPTEC-4300 female dovetail (includes DSI 3.5 female adapter)] |
| 19751 |
Gemini 120 Big-Bore Focusing Rotator Special variant of the Gemini Focusing Rotator with large 120mm opening. Re-designed thrust bearing allows even more light throughputand heavier loads than the original Gemini 96mm Focusing Rotator |
Note: OPTEC-4300 Dovetail Mounts required for both Telescope and Camera Side Interface – Sold Separately
| Size | Gemini 96, Gemini 120 Big Bore |
|---|
Fast Shipping and Professional Packaging
Due to our longstanding partnership with UPS FedEx DHL as well as other major international carriers, we are able to provide various shipping options. Our warehouse personnel will pack each item according to our strict requirements. Before they are shipped, your goods will be thoroughly examined and secured. Everyday, we send to thousands of clients in different countries. This is a sign of our determination to become the largest online retailer globally. The warehouses and centers for distribution are in Europe, as well as the USA.
Note that orders containing more than one item will be processed according to the specific item.
Before shipping before shipping, we'll inspect thoroughly the items you've purchased. Most orders are delivered within 48 hours. The estimated delivery time is between 3 and 7 days.
Returns
The inventory is always changing and we do not fully manage it because of the fact that many parties are involved, including our warehouse and factory. Therefore, the actual inventory could change at any time. It's possible that your order will be unable to fill when you have placed the order.
Our policy is valid for 30 days. If 30 days have gone without a trace since the purchase and we are unable to offer an exchange or refund.
In order for your item to be returned it must be in its original packaging, unopened and in the same condition as when you received it in. It must also be in its original packaging.
Related products
Focusing
Adapter 3.5″ for Teleskop Service TS130/TS150 Photoline (A35-503-136) Starlight Instruments
Focusing
Focusing
Focusing
Focusing
