There are two popular kinds of inexpensive solar filters which you can buy in unmounted sheets, cut them and mount them yourself. The older kind is the black polymer type, with the most famous kind (especially in the US) being the one that Thousand Oaks makes (their glass filters are also popular), while the currently […]
Baader Astrosolar vs Thousand Oaks Black Polymer solar filter
September 11, 2016 // by ecuador
The easy solar filter: Baader Astrosolar Film on aperture mask cover.
March 15, 2015 // by ecuador
One of the best and least expensive solutions for observing the sun with a telescope is to use the Baader Astrosolar Safety Film. There are many places that will sell you a pre-mounted filter for your telescope, or you can make it yourself and save money. For example, by gluing strips of cardboard around the […]