The Stellarvue Crosshair Illuminator makes the crosshair reticle in your finderscope eyepiece more visible at night.

The illuminator will screw into any reticle eyepiece (having the provision for illumination), providing you with a variable brightness red illumination for the crosshair.

Adjust the brightness to your preference while preserving your night vision at the same time by turning the brightness knob. The illumination can be turned off too.

It uses two standard GPA76 batteries. The batteries are included.

• Screws Into Any Reticle Eyepiece. 
• Provides Red Illumination on Your Cross-hair.
• Knurled Aluminum Brightness Knob.