Description
Adapters for 2-inch Focuser Drawtubes
2-inch O.D. Adapters to fit the TCF-S and other 2-inch focusers.
Each of our 2-inch Drawtube adapters are machined to tight tolerances for a smooth, snug fit into the TCF-S and TCF-Si 2-inch focuser drawtubes. A dovetail cut directly matches the thumbscrews on the TCF-S for a secure fit. By tightening the thumbscrews, the adapter is drawn tightly into the focuser’s drawtube.
These 2-inch drawtube adapters will usually fit very well into other manufacturer’s focusers as well. Contact Optec for any 2-inch drawtube adapter not listed here.
#17663 – 2-inch to 1-1/4-inch Precision Centering Compression Adapter
The 2-inch to 1-1/4-inch Compression Adapter is our improved version of the #17662 1-1/4″ adapter. This new version features a solid brass compression ring with machined grooves to hold 1-1/4″ eyepieces firmly without slippage. A mere 1/8th turn of the upper locking ring tightens and loosens the 1-1/4″ bore for easy use with gloved hands.
The #17663 offers a precision machined 2-inch outer diameter to fit into the drawtube of the TCF-S or TCF-Si focuser or any 2-inch focuser. A dovetail cut matches the three thumbscrews on the TCF-S while the 1-1/4″ inner brass compression ring offers a non-marring alternative for 1-1/4″ eyepieces and camera or instrument nosepieces. The adapter is self-centering for any 1-1/4″ eyepiece or instrument nosepiece.
The 2-inch tube features an industry standard M48x0.6mm female thread for 2-inch screw-in type filters. Removing the lobed locking ring (shown in red) and the brass compression ring leaves a snug-fitting T-adapter with male M42x0.75mm threads.
Specifications
- Overall Outside Diameter (locking ring): 2.20″ (55.9mm)
- Outside Diameter (main body): 1.995″ (50.7mm)
- Overall Height: 1.58″ (40.2mm)
- Clear Aperture: 1.25″ (31.8mm)
- Weight: 4.6 oz (130 g)
- Back-focus Usage: 0.45″ (11.5 mm)
- Currently available with Red locking ring, Blue and Gold locking rings available August 2010. Specify color when ordering.
Compatible with:
- TCF-S or TCF-Si focuser,
- TCF-S3 or TCF-S3i focuser with #17804 3-inch to 2-inch reducer,
- Any manufacturer’s 2-inch focuser or receiver.
| Color | Red, Blue, Gold |
|---|
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.
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