Howie Glatter Side Cut-Out Adapter Tube - 1.25"

Our Price: $40.00
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In Stock (2 Available)
Ships by Next Business Day
Our Product ID: PALC-HG-SCO-125
Manufacturer SKU: HGSCO-1.25
Item Can Ship: Worldwide
Howie Glatter Side Cut-Out Adapter Tube 2" on the right and 1.25" on the left

More Views

  • Howie Glatter Side Cut-Out Adapter Tube 2" on the right and 1.25" on the left
  • Howie Glatter Side Cut-Out Adapter Tube- 2" on the left and 1.25" on the right

Quick Overview

  • The Side Cut-Out Adapter tube makes it easier to see the collimator face in some Cassegrain telescopes where internal baffles restrict its view
  • Used with the Howie Glatter Laser Collimator (sold separately)

Product Details

Cassegrain telescopes allow only the secondary mirror's angular alignment to be user-adjustable. The primary mirror, corrector plate, and back axis are fixed at the factory - hopefully already accurately collimated when you receive the telescope.

With the Howie Glatter laser collimator inserted in the eyepiece holder, collimation can be accomplished by adjusting the secondary to align the laser dot ("impact") as close to the center as possible. The laser's beam can be seen from the front of the telescope by looking through the corrector plate as a result of double reflection in the primary and secondary mirrors.

However, it may be difficult to see the collimator face because the view can be restricted by the baffles in some telescope tubes. If so, this side cut-out adapter tube makes it easier to see the collimator face at the back of the scope.