Calcium K Images - 2008

Ca K Barr filter : 393.38 nm - FWHM = 0.3 nm
Takahashi FSQ 106 mm Fluorite refractor stopped down to 65 mm
SBIG STL 11000M - Baader FFC
Exposure from 10 to 15 ms exposure according to sky conditions
 
 

Click on thumbnail for half-resolution image (350 ko) or on "Full-resolution image" for full-resolution image (1.2 to 2.1 Mo) or "chromospheric fringe" image

 
 
     

 

22 June 2008 - NOAA10999

in visible light

 

 
 
       

4 May 2008

(Full-resolution image)

(Chromosphere)

(3.6)

7 May 2008

(Full-resolution image)

(Chromosphere)

(2.9)

20 June 2008

(Full-resolution image)

(Chromosphere)

(3.05)

20 June 2008

NOAA10999

NOAA 10999 in visible light

21 June 2008

(Full-resolution image)

(Chromosphere)

(3.12)

22 June 2008

(Full-resolution image)

(Chromosphere)

(3.26)

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