Daystar’s Quark is a Hydrogen-alpha filter that fits into your telescope’s focuser. The unit weighs only 13.9 ounces (394 grams).
Astronomy: James Forbes
Here’s a prediction that I know will come true: In the next two years, interest in solar observing will rise dramatically. You probably can guess why. With the great solar eclipse of August 21, 2017, in our future, lots of people will want to prepare by purchasing a filter to view the Sun through.
Most will buy visual solar filters, also known as “white-light” filters. Such an accessory blocks harmful infrared and ultraviolet radiation and reduces the Sun’s visible light to a comfortable level. Such filters let you see sunspots.
But if you want to see more than just sunspots, you’ll need to move into the realm of Hydrogen-alpha (Hα) observing. Daystar Filters, a company that has been making such products for decades, has introduced a new player — the Quark — into that arena. It combines an all-in-one unit and the ultimate in portability with a price point below all but the smallest Hα filters.
