Baader Astrosolar Photo film ND 3.8

September 23, 2016 // by ecuador

In a¬†previous Solar filter test I explored how various filters help with getting some better white-light¬†Solar surface feature photos, and I had noted that while I was using the Baader Astrosolar Safety ND=5.0 film, some narrowband filters would benefit from the photo grade Astrosolar ND=3.8 film, as with allowing as much as 1/6310 of the […]