Sun in Hydrogen Alpha

With Coronado PST

Uploaded 8/20/11

 Today was filled with rain, clouds and thunder. But early in the morning around 8am, the clouds had not moved in yet, and I was able to get these shots. I am experimenting with off band comparisons for the first time here as well. The PST produces a strong gradient across the sun off band, and makes producing a Doppler gram a challenge for the future.

With 2x Coronado Barlow




                  
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Sunspot
                  1271 is bristling with intense activity, including small flares
                  and filament action.






                  
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Sunspot 1273 is fading fast, but has
some great magnetic field lines
visible.  Note the small detailed
arch line prom on the limb.







                  
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Off the opposite limb, a stunning
ocean wave like prominence.




With 3x Klee Barlow

 


                  
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Closer view of the sunspot AR1271
with many small filaments visible.







                  
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Demonstrating Doppler shift in the 
arching prom just below the spot. To
do this, the PST was detuned off band
in both directions around center band.




Instrument:  Coronado PST 40mm
Platform:  Astrophysics 1200
Camera:  DMK 1024
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing 8/10, Transparency 8/10
Outside Temperature: 75F
Processing: Registax, Photoshop CS
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