Bob's Knobs for Celestron C11 f/10 with Flat Secondary Housing and Metric Collimation Screw Threads # C11met

Our Price: $21.95
Free shipping for this item in the US Click here for more info

Continental US Customers:
All items we sell ship for free within the Continental US. Shipping will be via the cheapest shipping method which will vary depending on the items in your order. During checkout, you may also be shown other optional faster shipping choices.

US Customers in Hawaii and Alaska:
Free shipping applies to almost all products. A few large telescopes and mounts are excluded from this free shipping offer. For these items, please contact us to obtain a shipping quote before you check out using the online shopping cart.

International Customers:
Free shipping does not apply to international orders. During check-out, you will be presented with several shipping choices and costs. However, the export of some items may be restricted outside the US due to size or manufacturer restrictions.

In stock (5 Available)
Ships by Next Business Day
Our Product ID: PAOA-BK-C11met
Manufacturer SKU: C11met
Item Can Ship: Worldwide
Bob's Knobs for Celestron C11 f/10 with Flat Secondary Housing and Metric Collimation Screw Threads # C11met

More Views

Special Note: The Celestron 11” SCT uses either standard 6-32 or metric M3 collimation screws. Allen and set-style factory collimation screws have standard threads. For Phillips collimation screws, most silver screws are standard and most black screws are metric. See our hints for more information.

Product Details

Collimate your Catadioptric or Newtonian reflector style telescopes without tools!

It's easy...just grab a Bob's Knob collimation thumbscrew and turn. You can even do it while looking through the eyepiece on most scopes. These thumbscrews are also much easier to use with gloves on. And perhaps most importantly, you'll never drop that pesky little Allen wrench or screwdriver into the grass again. Installation is a snap with the included instructions, and you can undo the modification at any time.

Part: C11met
Fits: Celestron 11" (28 cm) f/10 SCT versions with flat secondary housing and metric collimation screw threads (most CPC 1100).

Knobs: Black oxide steel, 12 mm (1/2") diameter
Threads: Black oxide steel

Notes:
1. Black Phillips factory collimation screws usually have metric threads, but some black Phillips screws have standard threads. Our hints will help you determine which screws are on your telescope. Make sure the knob threads match the factory screw threads before installing the knobs.
2. The factory dust cover will fit normally with Bob's Knobs installed.
3. If your telescope has a factory-installed plastic cap over the collimation screws, it must be removed and set aside when Bob's Knobs are installed. The cover is cosmetic only and will not affect operation of the scope.

Product Questions & Answers

No questions yet. Be the first to Ask a Question.