BAADER D-ERF ENERGY REJECTION FILTER polemaster the Hyperion Aspheric eyepieces are

the Hyperion Aspheric eyepieces are a compelling offering for an attractive price

The system has been carefully designed for ease of setup and use in low-light conditions

M3 port selector

GSO Ritchey-Chretien 254mm f/8 with truss carbon fiber tube and ESATTO 3" and the following optional accessories: EAGLE with PLUS dovetail clamp installed above the telescope

BAADER D-ERF ENERGY REJECTION FILTER polemaster the Hyperion Aspheric eyepieces areThe Baader D ERF Energy Rejection Filters are dielectrically coated to reject the majority of light at both ends of the spectrum, with a narrow transmission window of only 80nm half bandwidth around the H alpha line. This enables safe usage of H alpha solar filters with telescopes larger than 80mm in aperture by preventing as much extra energy as possible from entering the telescope. Note: an additional filter cell will need to be custom 3D printed