Daystar Solar Scout 60mm-ds H-Alpha Solar Telescope - Mint

Features Quality Achromat Doublet 60mm refractor used in mint condition Best Priced 40-60mm H-alpha Telescope Helical Front-end Focus with fine precision can focus for visual and imaging. 'Doublestack' performance at no extra cost Top quality Quark* performance Micro-USB power cable and US wall charger 'Solar Bullet' finder Vixen /Photo style mounting foot   * Non-removable H-Alpha filter: Quark component is not interchangeable on SS60ds. Original SS60 telescopes can interchange Quark optical components, but for cost reduction needs, the SS60ds has an all-in-one conjoined construction.   Description  Light from the telescope enters the blocking filter (at left), where wavelengths near H alpha are transmitted while the rest are reflected back out. Red H alpha light then passes through the telecentric barlow lens elements to achieve a slower focal ratio, more parallel light beam. The Etalon passes a very narrow range of light wavelengths, but it is sensitive to temperature and light a