The large diameter of the SM90 solar filter will support a longer focal length, and results are great when seeing is good. TodayI felt seeing was good enough to use a Televue 2.5x Powermate, and with the tak focal length of 800mm, the flick was imaged at 2000mm. This hi mag movie showing AR1166 reveals lots of rich [...]
Archive for March 2011
Hydrogen Alpha Solar Movies at 2000mm FL
March 9, 2011Plasma Rain, AR1164, and a Eruptive Prominence
March 6, 2011Here is the first prominence movie made with the solarmax 90 filter. Seeing conditions were poor, and the avi files (300 each) were captured through a thin layer of clouds. Image brightness fluctuated as clouds passed by the sun, so i kept an eye on the histogram and adjusted the gain as needed. I think it [...]
Coronado SM90 Filter Shakedown
March 3, 2011During the great Meade factory outlet sale on Coronado hydrogen alpha filters in Feb 2011, I decided to purchase 2 Coronado Solarmax 90 filters to double stack on the TSA102. One with a BF30, and the other with a BF10. They soon arrived at the doorstep after a short trip from San Ysidro in nice [...]
