DAYSTAR QUARK MAGNESIUM I b2 FILTER QHY 25" telescope eyepiece

25" telescope eyepiece

Delta-T ready - For added dew prevention

The closing strip is elastic and allows to connect it to telescopes with a diameter up to 100mm - 120mm

Testar 30mm F/4 Mini Guide Scope with ZWO ASI120MM camera - back focus from rear of front cell to focus ring approx

flat-field Entry pupil 300 mm Primary mirror diameter

DAYSTAR QUARK MAGNESIUM I b2 FILTER QHY 25" telescope eyepieceThe DayStar Instruments Magnesium Quark Eyepiece reveals a whole new area of highly magnetized high energy in the bright 5172. 8 wavelength. The eye is most sensitive at this wavelength so the image is significantly brighter than calcium. Views show both plage and dark mottling of chromospheric network. To prevent damage to your telescope, the Quark must be used with an appropriate energy rejection filter (sold separately). For refractors under 120mm