Do you use a Schmidt Cassegrain telescope? If so, you may have encountered a common problem known as image shift - or difficulty achieving perfect focus. Oceanside Photo and Telescope is here to help with the TPO Dual Speed SCT Crayford Focuser.
In order to pass savings along to our customers, TPO engages the services of a leading manufacturer to custom CNC machine these specialty 2 inch Dual Speed Crayford Focusers meant specifically for the Schmidt Cassegrain Telescope. Aluminum means lightweight, and from there they are then black anodized for good looks and durability. These focusers are designed to fit almost every model SCT - including Meade and Celestron - and are compatible with any standard SCT thread.
If you're unsure of the fit, just check your telescope's rear cell for an approximate 2 inch diameter male thread, or contact our experts to insure a perfect match. Inside the TPO 1:10 Dual Speed SCT Crayford Focuser, you'll find anti-reflection baffles and coatings to keep any stray light to a minimum and provide the best contrast possible. Precision roller bearings incorporated into the tube design allow for smooth functioning on the roller shaft and the black anodized barrel is laser-etched with a millimeter scale to give you 100% precise calibration markings. The focusers stops where you want it to... and stays put.
The TPO 1:10 Dual Speed SCT Crayford Focuser will also allow up to 1 inch of focus travel, too! There's no harsh aluminum screws here to scratch eyepiece barrels. The TPO 1:10 Dual Speed SCT Crayford Focuser uses only brass compression ring fittings that gently cradle your prized eyepieces or 2 inch star diagonals with a secure fit that you'd expect from high quality. As an added bonus, we've included a 1.25 inch to 2 inch adapter, too... So all of your accessories are good right out of the box!
TPO 2 inch Dual Speed SCT Crayford Focuser Features
- Minimum focuser height without 1.25 inch adapter: 4.29 inches or 109 mm.
- Minimum focuser height with 1.25 inch adapter: 5.28 inches or 134 mm.
- Maximum focuser height without 1.25 inch adapter> 4.88 inches or 124 mm.
- Tube Travel Length: 0.99 inches or 25 mm
- Focuser Weight (including 1.25 inch adapter): 1 lb-10.5 oz or 751 gm
- Diameter of Focus Knob: 1.57 inches or 40 mm
- Diameter of Micro-focus Knob: 1.02 inch or 26 mm
- Outer Barrel Diameter: 3.3 inches or 84 mm
- Standard SCT Female Thread
- Calibrated Millimeter Markings on Focuser Outer Tube
- 360 Degree Fully Rotatable
- Dust Plug Included
- Designed for Schmidt Cassegrain telescopes to fit all standard SCT rear threads.
- The TPO 2 inch Dual Speed SCT Crayford Rear Focuser is custom machined from aluminum and black anodized for good looks and durability.
- 1:10 speeds work for visual applications through astrophotography and rotates a full 360 degrees.
- The TPO 2 inch Dual Speed SCT Crayford Rear Focuser permits use of 2 inch accessories.
- Includes 1.25 inch adapter.
