
Daystar also recommends use with a UV/IR cut filter for safety. Users need to purchase an Energy Rejection Filter specific to their telescope for safe operation. Red glass ERF filters will not pass Sodium. Compatible with yellow glass ERFs offered by Daystar.

We even reduced power consumption, so the Quark can now operate all day off a small, palm-sized optional battery pack. The new, compact design configuration eliminates unnecessary components, weight and associated costs.It's all combined in one lightweight eyepiece sized device. The fully optimised design eliminates the need for any adapters.

No specific FWHM bandpass is designated, but it will be around 0.5Å or lower.
