Barlow attachment consists of a disc with a white screen front and a small Barlow lens at its center.
It screws to the laser aperture, and offers a more compact option for Barlow-collimating.
The shadow is projected to the screen at the front of the collimator, so in some cases visibility of the screen may be difficult from mirror adjustment position at the back of the scope.
Barlow attachment consists of a disc with a white screen front and a small Barlow lens at its center.
It screws to the laser aperture, and offers a more compact option for Barlow-collimating.
The shadow is projected to the screen at the front of the collimator, so in some cases visibility of the screen may be difficult from mirror adjustment position at the back of the scope.
