The Sun on May 16, 2007
by Vern on May.16, 2007, under Astronomy, Solar
Region 10956 is about midway between the east limb (left) and center of the disk. It had a series of B-class, and a couple C-class flares earlier today. NOAA has changed the magnetic classification to beta-gamma-delta, the most dangerous type. M-class flares are expected. Also it has grown by 69% in the last 24 hours. See http://www.raben.com/maps/EarthSideSolarRegions.html for a table showing changes.
Image acquired at 11:50 am MDT with SolarScope LTD 50mm halpha telescope, Televue 2.5X Powermate, and Canon Xti (1/500 sec at ISO 100 for disk, 1/400 sec at ISO 800 for prominences). Aligned and stacked with Registax4, composited and enhanced with Photoshop. Sky was mostly clear, thin haze, temperate 70°F, no wind, and 5/10 turbulence, location Louisville, CO.
Image of the sun in white light at 1:00 pm MDT with Stellarvue A1010 telescope, Baader filter, and Canon Xti camera (ISO 100, 1/400 sec exposure). Aligned and stacked with Registax4.
