Solar 2012-04-21





Hydrogen Alpha: Lunt 60mm Solartelescope + Lunt 50mm front filter for double stack.
Extra equipment: 0.5x focal reducer, 1.5x barlow, 2.5x Powermate
Camera: DMK31AU03 USB Mono


It was rather hazy and a few tiny, thin clouds here and there.
80gb data were recorded in 134 AVIs during the 2 hour session. Registax 6 was used for all stacking. It worked quite fast in batch mode.

All images were recorded in double stack mode.

The sun was rather active with a large, thick prom.

0.5x focal reducer - HDR from 4 images.


46 minutes later.


Link 617kb GIF animation of the two images.


Here i boosted gain from 300 to 600 to capture the faint prom at the bottom right. The shuttertime was not changed and remained at 1/30th and 30 fps.



Alternative of the above.





1.5x barlow - Mosaic of 9 images.

Link 2000 x 2000 full resolution


Mosaic of 17 images.

Link 2000 x 2000 full resolution


Images with 2.5x powermate:


26 minutes later. I guess i should have made a time lapse of this one.












Time lapse:

Seq A - 600 frames (200 stacked) were recorded every 30 seconds for 35 minutes, for a total of 71 frames. Used a 1.5x barlow.
Gain 300, 1/45th shutter and 30 fps.
The area was pretty active with small eruptions all the time.
Small, thin clouds drifted across the sun for some of the frames during recording.


Link 3.8mb quicktime at 970 x 700


Inverted.


Link 3.7mb quicktime at 970 x 700


Cropped GIF animation.


Link 1.4mb GIF animation



Seq B - 600 frames (200 stacked) were recorded every 30 seconds for 15 minutes, for a total of 31 frames. Used a 2.5x Powermate.
Gain 500, 1/30th shutter and 30 fps.
Still a pretty active area.


Link 1.4mb quicktime at 1012 x 714


Inverted. Much easier to spot the activity all along the edge.


Link 1.8mb quicktime at 1012 x 714


Cropped GIF animation.


Link 883kb GIF animation