This double telescope is piggybacked on German Equatorial Mount (GEM) w/ four (4) D-cell battery drive. This scope needs to be roughly polar aligned to track the sun or objects in the night sky. The 100mm f/6 Orion refractor is fitted with a SolarMax 60mm hydrogen-alpha solar filter. The 80mm f/11.3 Tasco refractor is fitted with a white light solar filter. Both have 20mm eyepieces.