Product Description
To get a better look at what's included, check out this customer's personal review of the CW-1.
This counterweight system is used to quickly adjust balance on smaller telescopes when eyepieces of different weights used. It eliminates the need to rebalance the telescope.
The stainless-steel counterweight itself is one pound and 13 ounces in weight. The counterweight shaft is 16 mm in diameter and nine inches long. The mounting base is made of 6061-T6 aluminum and has a stainless-steel insert. Mounting the counterweight system on the telescope's rear mounting ring, facing toward the user, one can easily loosen the thumb screw and move the counterweight back and forth to compensate for lighter or heavier eyepieces.
The base mounts to the top ring with a 1.5" hole spacing. This is the same hole spacing as on all Stellarvue rings. Included in the system are two 5/8" length stainless steel, socket cap head screws. Make sure your rings have two threaded holes on top that 1 1/2" apart and have a 1/4-20 thread. If your rings are imported and use 6mm screws, call us and we can substitute metric for the standard SAE screws supplied.
Warning: Imported rings may not have blind threaded holes. If this is the case, if you use screws that are too long, they may pass through the mounting rings and mark up your tube. Measure before using.
1. Counterweight Shaft Diameter: 0.6230 Inches
2. Counterweight Diameter: 2.35 Inches
3. Counterweight Weight: 1 Pounds and 13 Ounces.
4. Counterweight Shaft Length: 10 Inches.
5. Cost of Counterweight with Thumbscrew: $24.00 Each (call us at (530) 823-7796 to place a custom order for additional counterweights)
To get a closer look at what's included, check out a customer's personal review of the CW-1.
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Product Reviews
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Balancing Act Solution!
A worthwhile addition to help with the big eyepiece/small eyepiece balancing act. The product arrived promptly and well packaged. I’m still using the packaging when transporting the Stellarvue 110. Product is well made. I have the balancing shaft pointed forward on the rear ring, but your mileage will vary. I can now use my Nagler 31 & Stellarvue 20 with the other lightweight eyepieces on my older Stellarvue M002 mount without fear of the scope nosediving! I’ll fashion something to keep the wingnut/washer from falling into the grass when my fingers feel like frozen sausages. I’d buy it again! Thank you Stellarvue.
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Great accessory for fine adjustments...
The CW-1 counterweight system is a perfect match for the SVX 130T. It has the same high end machined finish as the 130 and color matches the OTA rings. I like to know that the belt drives on my mount are working within their designed parameters. Switching from a small eyepiece to a large one, or from one accessory to another, I feel, introduces stress on a mount because the balance changes. The CW-1 helps mitigate this change. I have experimented with the CW-1 and found that it can be mounted on either OTA ring facing in either direction on the scope, offering great flexibility of use. I prefer mounting it on the ring furthest from the focuser but facing it. It works well on the 130 with all the eyepieces I currently use. I set up the CW-1 weight in its center position on its bar with my most used eyepiece and diagonal inserted (while in focus, dew shield extended and cap removed) and work from there. There is minimal load on my locking clamp and drive motor after I fine tune the balance of the scope. As I understand it, the CW-1 is an accessory for visual use only. Be prepared to accommodate the extra weight of the CW-1 with the appropriate tripod mount counterweight for best results. Looks awesome too if you ask me. Thanks Stellarvue!
