Telrad Riser Base (New Version) Planisphere 2 system allows for shorter

2 system allows for shorter exposure times compared to traditional f/10 astroimaging

a user can start the periodic error correction (PEC) at any time to improve the tracking performance for short focal length astrophotography

1:1 gear ratio

Al has massaged more eye-relief

Back Focus: Adjustable

Telrad Riser Base (New Version) Planisphere 2 system allows for shorterThe Riser Base is available in nominal 2. 5" and 4" heights. Used in conjunction with the existing mounting base, it acts to offset the sight from the main tube for easier viewing. Select 2. 5" or 4" Riser base. These are the newer version of the risers that are injection molded.