Bob's Knobs for SkyWatcher 5", 6", 8" & 10" Newtonian Primary
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: SWpri
Fits: SkyWatcher (5", 6", 8", 10") Newtonian telescopes with factory collimation screws (not knobs).
Primary collimation
Knobs: Black plastic, 16 mm (5/8") diameter
Threads: Stainless steel
Primary Lock
Knobs: Red plastic, 16 mm (5/8") diameter
Threads: Stainless steel
Notes:
1. These knobs will fit only a primary with factory collimation screws. If your telescope already has factory collimation knobs these knobs will NOT fit.
2. The telescope optical tube assembly will clear the Dobsonian rocker box with primary knobs installed.
3. Knobs with shorter screws and spacers replace the factory flathead Phillips collimation screws. Knobs with longer screws replace the factory set-style (grub) locking screws.
4. Since the factory collimation and locking screws are close together, knobs must be staggered in height. The locking knobs protrude further than the collimation knobs.
5. Protect the locking knobs from damage, and do not support the OTA using the locking knobs as feet.
| 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: SWpri
Fits: SkyWatcher (5", 6", 8", 10") Newtonian telescopes with factory collimation screws (not knobs).
Primary collimation
Knobs: Black plastic, 16 mm (5/8") diameter
Threads: Stainless steel
Primary Lock
Knobs: Red plastic, 16 mm (5/8") diameter
Threads: Stainless steel
Notes:
1. These knobs will fit only a primary with factory collimation screws. If your telescope already has factory collimation knobs these knobs will NOT fit.
2. The telescope optical tube assembly will clear the Dobsonian rocker box with primary knobs installed.
3. Knobs with shorter screws and spacers replace the factory flathead Phillips collimation screws. Knobs with longer screws replace the factory set-style (grub) locking screws.
4. Since the factory collimation and locking screws are close together, knobs must be staggered in height. The locking knobs protrude further than the collimation knobs.
5. Protect the locking knobs from damage, and do not support the OTA using the locking knobs as feet.
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
Bob's Knobs for SkyWatcher 5", 6", 8" & 10" Newtonian Primary # SWpri