Daystar QUARK Magnesum I b2 line filter


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Daystar Instruments QUARK MgI b2 line "Eyepiece"

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By popular demand, we are introducing a Magnesium I b2 line version of the Quark, for use in refractors F/4-F/9.  Magnesium shows high contrast between granulation and spicule boundary in addition to plague emission.