The UV-IR Blocker lets the full range of sensitivity of the human eye (according to DIN 5031) pass, and blocks all other parts of the spectrum in the UV and IR. Learn More

This 2" eyepiece holder threads into the top of your Quark after removing the 1.25" adapter that come standard with every Quark. Learn More

It blocks the heat from reaching your filter and diagonal. Learn More

Quark to T adapter, for mounting T thread cameras directly and rigidly to the Quark. Compatible with T thread Interference Eliminator. Learn More

Quark to C adapter, for mounting C thread cameras directly and rigidly to the Quark. Compatible with C thread Interference Eliminator. Learn More

Quark to C and T adapter bundle, for mounting C or T thread cameras directly and rigidly to the Quark. Compatible with Interference Eliminator. Learn More

Eliminate waves of interference on monchromatic solar images with this handy adapter. C thread on front and rear. Learn More

DayStar's Imaging Focal Reducer can give you more field of view in your images. 2" to T mount, with T extension tube for even more reduction. Learn More

FC90 Flat Cap Imaging Diffuser fits 80-89mm tube OD or 63mm ERF Learn More