The Student Observatory at CCSN
Images of the sun.
Set your window to wide to allow the next images to be side by side.
Left: Sunspot group photographed on 12/15/94 at 18:39:35 UT. A broadband red filter was added to the light path to increase contrast. The telescope was an 8" Celestron SCT operating at f/10 with a full aperture aluminized filter.
Right: The same sunspot group was photographed at 19:03:17 UT on 12/15/94 using a DayStar Hydrogen-alpha filter. A red front aperture filter with a diameter of 2.5" was used to control the light entering the telescope. The telescope was an 8" Celestron SCT operating with a 80" focal length (effective f/32). The camera was a SBIG ST-6 CCD with exposure times of 0.01 seconds for both images.
Sunspot group photographed on 12/20/94 at 19:00:23 UT. A broadband red filter was added to the light path to increase contrast. The telescope was an 8" Celestron SCT operating at f/10 with a full aperture aluminized filter. The camera was a SBIG ST-6 CCD with an exposure time of 0.01 seconds.
The same sunspot group was photographed at 20:24:35 UT on 12/21/94 using a DayStar Hydrogen-alpha filter. A red front aperture filter with a diameter of 2.5" was used to control the light entering the telescope. The telescope was an 8" Celestron SCT operating with a 80" focal length (effective f/32). The camera was a SBIG ST-6 CCD with exposure times of 0.01 seconds for both images.
Left: Sunspot group photographed on 03/17/95 at 18:07:44 UT. A broadband red filter was added to the light path to increase contrast. The telescope was an 8" Celestron SCT operating at f/10 with a full aperture aluminized filter.
Right: The same sunspot group was photographed at 18:15:46 UT on 03/17/95 using a DayStar Hydrogen-alpha filter. A red front aperture filter with a diameter of 2.5" was used to control the light entering the telescope. The telescope was an 8" Celestron SCT operating with a 80" focal length (effective f/32). The camera was a SBIG ST-6 CCD with exposure times of 0.01 seconds for both images.
This loop prominence was photographed at 18:30:35 UT on 03/17/95 using a DayStar Hydrogen-alpha filter. A red front aperture filter with a diameter of 2.5" was used to control the light entering the telescope. The telescope was an 8" Celestron SCT operating with a 80" focal length (effective f/32). The camera was a SBIG ST-6 CCD with exposure times of 0.01 seconds.
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Page last modified: 06/03/95