A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Marty Lyons
Date: 2016 Apr 7, 04:39 -0700
"and no electrical scale or crosshair illumination."
When shooting stars at night, and the crosshairs on my transit are invisible, I use a little keychain LED light aimed into the front end of the scope to illuminate the hairs. You adjust the angle of the LED to just provide some internal reflection inside the scope. The hairs become visible without washing out the star. Red LEDs seem to work best.