First Sunspot Photo! March 16, 2010Posted by jcconwell in Observatory, Solar and Space weather.
Tags: EIU, Observatory, Solar, sunspot
It’s spring break at EIU and today I finally installed the full aperture solar filter, which cuts down the light by a factor of 100,000 on the 16″ telescope. Until 2010 there were no sunspots to see; then there were no clear skies, and no time with the semester beginning. But with spring break I had some fun. Good news… I get to do this at noon, NOT at 3:00 in the morning. Bad news… focusing can take a while since I did not have some nice bright pinpoint stars. You have to use a blue filter and .12 second exposure (the fastest the ST-8 camera will do), or else you overexpose the picture. Picture taken at F-10 (4000mm focal length)