Also known as Bahtinov masks, Orion PinPoint Focusing Masks will help you achieve precise focus in seconds.
This PinPoint Mask fits telescope tubes with an outer diameter of 118-153mm (4.64″ to 6.02″).
Orion PinPoint Focusing Masks produce a distinct, intersecting 3-line pattern once accurate focus is achieved.
Three Orion-exclusive adjustable padded pegs provide a secure grip once installed on a telescope.
Compatible with any type of telescope, and especially useful for astrophotography setups.