Solar Flare Loops

Blogged by Aurélie Le Fort-Beunink on February 9, 2012 and tagged with Sample Images, Sun.

Here's a detailed sequence of a limb flare shot with 4" aperture scope using a Daystar ION 0.8A filter and DMK 21AU618.AS camera.

Second image shot with same scope and filter, and the new DMK 21AU618.AS of post flare loops following the X1.8 class solar flare along the northwestern limb on 27 Jan. 2012. Seeing was poor so image scale is kept small, but the added sensitivity at 6563A allowed for much higher shutter speed at 60 fps capturing some finer structure despite turbulent air. More experimenting to do, but thus far the DMK 21AU618.AS with improved sensitivity at 6563A, allowing higher shutter speeds with very low noise, is the ideal camera, IMHO, for large image scale photography of prominences and chromospheric features in H-alpha. A definite step up from the venerable DMK 21AU04.AS workhorse. Way to go The Imaging Source!

Jim Ferreira, Livermore CA