Sun in HAlpha
With Lunt LS100THa 
Uploaded 2/9/18

Daily Report
For Friday, Feb 9, 2018
 
 Only
 
Images below are 1290 wide and non clickable
 

            
 Halpha:

            
Lets
            start with the full disk view. One spot group only!

            


            
Next,
            the proms along the limb on the full disk view. To do this, we
            use an Antares .5x focal reducer on the front of the DMK51 camera,
            and a very short 1.25 extension tube. This yeilds twice the FOV:

            


            
For
            these 3x views, the focal reducer is removed and a Klee 3x shortie
            barlow is installed. This barlow works well in Halpha, unlike
            many other types we have tried!

            
The
            main spot group is a cauldron of activity as you can see how
            disturbed the region is around it.

            


            
 

            
In
            the red wing of Halpha, which is off band toward the red end
            (as opposed to the blue direction) about 1/2 angstrom we see
            a bright ring of tiny microflares round the sunspots:

            


            
Finally,
            the close up of the major prom on the limb at 3x:

            



Instruments:  Lunt LS100THa Halpha
Platform:  Astrophysics 1200
Camera:  DMK 51
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing 2.5/5, Transparency 8/10
Outside Temperature: 55F
Processing: Registax 6, Photoshop CS2

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