M Class Flare in AR1158

AR1158 developed quickly into a cluster of sunspots, and I had a chance to make this time lapse movie from 1706-1736 UT on 13 Feb 2011. I used a Takahshi TSA 102, a doublestacked 75mm Lunt Hydrogen alpha filter. The imager was the new DMK 31AU03offers wide views, but very large files. Movie files are large, but these files are huge and are difficult to compress and share. In this post I present 2 movies. The movie shown below is a giff file. AR 1158 unleashed an M class flare shortly after I began making the movie. Then, as soon as it began its burst, the clouds rolled in. still, the pre flare activity and peak output were recorded

This next movie is the same subject as above, but I used a large alignment box in registax when I executed an alignment of the final frames (see post on 12 Dec 2010 “how to make a solar movie”). Then I saved as alignment area instead of full frame. Registax cropped all the images from1024x768 to 512×512.

It seems the DMK 4102 is better suited for making time lapse movies. The pixel size of the 31is great for still images, but the large file size, and slower frame rates inhibit movie making and sharing. Wide views are nice, but I can remove the barlow from the nosepiece and get a wide view at 60fps.