Bob's Knobs for Meade 8" f/10 with 4-Screw Secondary
Ships by Next Business Day
Contiguous US Customers:
All items we sell ship for free within the Contiguous 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.
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: M8-4
Fits: Meade 8" (20 cm) f/10 SCT versions with four screws on the secondary housing (LX90, LX200, others).
Knobs: Black plastic, 13 mm (1/2") diameter
Threads: Black anodized aluminum alloy
Notes:
- Two sets of knobs, each with a different screw thread length, are included with your order. Use the thread length (measured below the white spacer) that matches the factory screw thread length.
- The factory dust cover should fit normally with Bob's Knobs installed. If your dust cover contacts the knobs, we provide a set of spacers that attach to the inside of the dust cover to move it slightly away from the secondary assembly. Contact us for a free set. You can also press the center of the cover from the inside to contour it for additional clearance.
- Pre-2005 Meade 8” telescopes have three screws on the secondary housing and no fourth screw on the side. The surface of the 3-screw secondary is textured, not smooth like the surface of the 4-screw secondary pictured. The 3-screw secondary requires different knobs (Item # M8-3).
- An Allen wrench for removing the factory collimation screws is included with your order.
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
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: M8-4
Fits: Meade 8" (20 cm) f/10 SCT versions with four screws on the secondary housing (LX90, LX200, others).
Knobs: Black plastic, 13 mm (1/2") diameter
Threads: Black anodized aluminum alloy
Notes:
- Two sets of knobs, each with a different screw thread length, are included with your order. Use the thread length (measured below the white spacer) that matches the factory screw thread length.
- The factory dust cover should fit normally with Bob's Knobs installed. If your dust cover contacts the knobs, we provide a set of spacers that attach to the inside of the dust cover to move it slightly away from the secondary assembly. Contact us for a free set. You can also press the center of the cover from the inside to contour it for additional clearance.
- Pre-2005 Meade 8” telescopes have three screws on the secondary housing and no fourth screw on the side. The surface of the 3-screw secondary is textured, not smooth like the surface of the 4-screw secondary pictured. The 3-screw secondary requires different knobs (Item # M8-3).
- An Allen wrench for removing the factory collimation screws is included with your order.
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
Bob's Knobs for Meade 8" f/10 with 4-Screw Secondary # M8-4