QUARK Hydrogen Alpha "Eyepiece" . . . HK$9,260 (accepting order 接受订货)
QUARK Calcium H-line . . . HK$9,260 (accepting order 接受订货)
QUARK Magnesium I b2-line . . . HK$9,260 (accepting order 接受订货)
QUARK Sodium D-line . . . HK$9,260 (accepting order 接受订货)
** All DayStar Ha filters assemblies applied on telescopes over 80mm aperture need to be used in conjunction with an Energy Rejection Filter
* Please ask for all other Daystar Filters items