The Sun and its Spots on 25th August 2005 Home

The Sun on 050823 The whole Sun.  Move the mouse over the image to see the designations.  
Spot 10801 has disappeared but two more have appeared.  10802 is very similar to 10801 but is south of the equator, and 10803 has appeared from the other side.

Date and Time: 25th August 2005 07:25 UT
Camera: ToUcam 740K
Telescope: 270 mm SLR
Capture: K3CCDTools. Low gamma, B/W, 1/50", 0% gain, 423 frames
Processing: Registax. 141 frames stacked. Wavelets 1-2 = 10


Sunspot 10800 on 050825 Spot number 10800 hasn't changed much from two days ago.
Date and Time: 25th August 2005 07:39 UT
Camera: ToUcam 740K
Telescope: ETX125 at prime focus.
Capture: K3CCDTools. Low gamma, B/W, 1/250", 0% gain, 614 frames.
Processing: Registax. 106 frames stacked. Wavelets 1-3 = 10, contrast 190, brightness -46


Sunspot 10803 on 050825 This sunspot has appeared round the limb over the last day or so.  SOHO doesn't show it on yesterday's picture but it was spotted by an amateur observer in New Zealand spotted it at 01:47 UT.

Date and Time: 25th August 2005 07:49 UT
Camera: ToUcam 740K
Telescope: ETX125 at prime focus.
Capture: K3CCDTools. Low gamma, B/W, 1/250", 0% gain, 517 frames.
Processing: Registax. 75 frames stacked. Wavelets 1-3 = 10, gamma 0.7, contrast 185
Sunspot 10802 on 050825 This sunspot has appeared since I last imaged the Sun.  In some ways this is a "proper" sunspot in that they are supposed to appear in pairs.  Sunspots are a magnetic phenomenon, and you get one spot where the lines of magnetic force emerge from the surface and another where they return.  Normally the magnetic fields are more complex and so are the spots..

Date and Time: 25th August 2005 07:49 UT
Camera: ToUcam 740K
Telescope: ETX125 at prime focus.
Capture: K3CCDTools. Low gamma, B/W, 1/250", 0% gain, 517 frames.
Processing: Registax. 250 frames stacked. Wavelets 1-3 = 10, histogram 80-160
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