Homestar Planetarium Disc - Aurora Borealis & Scenic Disc Taiga Dew Shield This guarantees razor-shape images across

This guarantees razor-shape images across the entire field

The highly reflective coating on both the primary and secondary mirrors provides sharp

Available screw holes allow an e

so there will be no vignetting with fast telescopes

Adjustment range of the extract: 90mm

Homestar Planetarium Disc - Aurora Borealis & Scenic Disc Taiga Dew Shield This guarantees razor-shape images acrossThis optional additional disc adds a new dimension to your Homestar Planetarium and features a stunning panoramic view of Aurora Borealis appearing in the night sky. Aurora Borealis is commonly visible in the northern artic skies as radiation from the Sun hits our atmosphere and creates a magical plasma effect. This disc is designed for use with the Homestar Planetarium.