Info:

Yohkoh has four instruments on it to detect activity on the sun.  They are a Bragg Crystal Spectrometer (BCS), a Hard X-ray Telescope (HXT), a Soft X-ray Telescope (SXT), and a Wide Band Spectrometer (WBS).  The HXT and SXT are used for hard and soft x-ray imaging and the BCS and WBS are used for spectroscopy.  This project used data primarily from the SXT.

A filter: 1,6
B filter: Al.1 (Thin Aluminum), AlMg (Aluminum Magnesium), Be119 (Beryllium), Al.12 (Thick Aluminum), Mg (Magnesium)
Resolution:  full - 2.455" per pixel
                       half - 4.9" per pixel
                       quarter - 9.8" per pixel

Pixel size: 1 pixel = 2.5 arc seconds ~ 1770 km
                    1 arc second ~ 720 km

Flare Info:

1.  Date: 24-Jan-92
Time: 09:20:18-22:40:59
Full Sun Images, 512 x 512 pixels
Filters: Al.1, AlMg
Files:  normal and subtracted data - 28 images, color data - 3 images
Rotated images: 225 degrees

2.  Date: 21-Feb-92
Time: 03:10:30-14:50:42
Partial Sun Images, 128 x 128 pixels
Full Resolution
Filters: Al.1, AlMg, Be119, Al.12
Files: normal and subtracted data - 379 images, color data - 6 color movies
Rotated images: 70 degrees

3.  Date: 22-Apr-93 to 23-Apr-93
Time: 17:33:34-03:37:03
Full Sun Images, 512 x 512 pixels
Filters: Al.1, AlMg
Files: normal and subtracted data - 41 images, color data - 12 images
Rotated images: 44 degrees

4. Date: 22-Mar-01
Time: 17:06:41-19:13:33
Partial Sun Images, 128 x 128 pixels
Full Resolution
Filters: AlMg, Be119, Al.12
Files: normal and subtracted data - 153 images, color data - 5 color movies
Rotated images: 65 degrees
 
 

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