Skip to content

You Still Have Time But Don't Delay - Holiday Shipping Schedules

Apertura Secondary Mirror Collimation Knobs - CK

SKU: APT-CK

Apertura Secondary Mirror Collimation Knobs

Collimating your Apertura Dobsonian Telescope is a breeze with these Secondary Mirror Collimation Knobs from Apertura! Included are three Apertura Secondary Mirror Collimation Knobs to replace each of the secondary collimation screws originally included with your Apertura Dobsonian. No wrench is required for collimation, so you can quickly and easy collimate your Dob without worrying about damaging the telescope.

To install the Apertura Collimation Knobs, remove each of the factory secondary collimation screws and replace with the Apertura Collimation Knobs. Then you are ready to collimate your Apertura Dobsonian tool-free and worry-free!

This Product Comes with the Apertura Absolute Warranty!

  • Two-Year Warranty against product defects.
  • Three-Year Accident Replacement Program that begins after your initial 2 year warranty expires.
  • Your Apertura Absolute Warranty is transferable.

Download a copy of the Apertura Absolute Warranty for more information on this program, how to make a claim, and why it is important to keep your original receipt and the product's original boxes & packaging!