Hi Res Hydrogen alpha Movie AR1147-1149
I received a new DMK CCD imager, the DMK 31AU03. It has a much larger chip, but half the frame rate of the 41AU04. I tested the new device on 24 Jan 2011 and made this time lapse movie at 1 minute intervals from 1816-1956 UT. The clip shows AR1147-1149 near the limb, and I lightened the post processing a little to enhance the chromospheric details on the limb. The best view of this movie is obtained bya right click of the mouse,select “save target as,” and download it to your computer.
Im still learning the optimum settings for this new imager, and need to increase the contrast a little on the next imaging session. Both good and bad performance issues came to light during the test run. The chip seemed to pick up H alpha fine, but traces of Newton’s rings are present. The wide views in semi high def are great, but the files are quite large, and a frame rate of 30fps seemed quite slow after using the 60fps 41AU04. But when I play the full uncompressed movie at full screen, im quite pleased.
