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duminică, 18 septembrie 2011

Spots on the Sun-telescope DSLR Nikon D80 images

File NameSunspots
Location: Baia Mare, Romania
Date: 18/09/2011 Time: 09:08:32
Telescope: Celestron 8" Newtonian reflector
Eyepiece: No eyepiece
Camera: Nikon D80
Exposure time: 1 / 2000 sec Manual
Max Aperture: F1
ISO: 1000
Edit: FastStone viewer
Date: 18/09/2011 Time: 09:07:32
Exposure time: 1 / 800 sec manual
ISO: 1000
Edit: FastStone viewer
The three photos above are edited differently, the latter being the original. At first photo I worked with the levels, curves and sharp (sharpness) and the on the second I dropped gamma and increased sharp.
Date: 18/09/2011 Time: 09:04:58
Exposure time: 1 / 250 sec manual
ISO: 400
Edit: FastStone viewer
Date: 18/09/2011 Time: 09:04:34
Exposure time: 1 / 50 sec manual
ISO: 400
Edit: FastStone image viewer
Date: 18/09/2011 Time: 09:04:04
Exposure time: 1 / 20 sec manual
ISO: 400
Edit: FastStone viewer


File Name: Sunspots
Location: Baia Mare, Romania
Date: 18/09/2011 Time: 09:02:32
Telescope: Celestron 8 "Newtonian reflector
Eyepiece: 10mm Hiperyon
Camera: Nikon D80
Exposure time: 1 / 20 sec manual
Max Aperture: F1
ISO: 400
Edit: FastStone viewer
Date: 18/09/2011 Time: 09:01:52
Exposure time: 1 / 20 sec manual
Max Aperture: F1
ISO: 400
Edit: FastStone image viewer
Date: 18/09/2011 Time: 09:00:16
Exposure time: 1 / 25 sec manual
Max Aperture: F1
ISO: 400
Edit: FastStone image viewer
Date: 18/09/2011 Time: 08:55:52
Exposure time: 1 / 60 second hand
Max Aperture: F1
ISO: 500
Edit: FastStone viewer
Date: 18/09/2011 Time: 09:02:16
Exposure time: 1 / 20 sec manual
Max Aperture: F1
ISO: 400
Edit: FastStone viewer


         Sunspots are a temporary phenomena on the Sun photosphere that appear as dark spots visible in comparison with the surrounding regions. They are caused by intense magnetic activity, which inhibits convection through an effect comparable to current brake, forming areas of reduced temperature. Like a magnet, they were also have the two poles. Although temperatures of about 3000-4500 K (2727-4227 ° C), in contrast with the surrounding material that is about 5780 K, there are clearly visible as dark spots. Sunspots expands and contracts while moving on the Sun and can have a diameter of 80,000 km, making it visible from Earth without a telescope. Sunspots can travel at speeds of several hundred m / s.

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