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| 1 | 2 |  » Stats |
Members: 50,124
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| | Welcome to our newest member, Woodsie71 | |  | 
17-02-2010, 02:19 PM
|  | Commander of the Wild Empire | | Join Date: Oct 2008 Location: north Surrey/SW London
Posts: 1,145
| | | solar prom
A large solar prominence seen in profile this morning on the approaching east limb of the sun probably over a new sunspot group currently hidden from view to appear in a few days - taken with handheld cam to Coronado PST scope. I've added via PaintShopPro the Earth to scale - small isn't it!
The PST is of similar size to the Aldi Optus spotting scope but views the sun in hydrogen-alpha [red] light via special inbuilt filters. 
Last edited by nytecam; 17-02-2010 at 02:21 PM.
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18-02-2010, 02:44 PM
| | Commander of the Wild Empire | | Join Date: Oct 2008 Location: north Surrey/SW London
Posts: 1,145
| | | Re: solar prom
|
20-02-2010, 06:48 AM
|  | Knight Commander of the Wild Empire | | Join Date: Jul 2007 Location: Bewdley, Worcestershire
Posts: 5,238
| | | Re: solar prom
What happens with these ejections once they detach from the suns surface? I take it that's what happened with this one?
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20-02-2010, 10:01 AM
| | Commander of the Wild Empire | | Join Date: Oct 2008 Location: north Surrey/SW London
Posts: 1,145
| | | Re: solar prom
Quote:
Originally Posted by Jez  What happens with these ejections once they detach from the suns surface? I take it that's what happened with this one? | Only a few 'events' are ejected from the sun eg coronal mass ejections [CME] which, if aimed in earth's direction, cause about a day later aurora in earth's upper atmosphere and disruption of long distant radio communications by disturbing the ionosphere. 
CMEs are only detected via space satellites in far ultraviolet/x-ray region - the proms as recorded are local solar events that follow magnetic field loops and fall back onto the suns's surface and very few escape into space. Checkout Youtube for prom speeded-up showing their looped motion 
Last edited by nytecam; 20-02-2010 at 10:05 AM.
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20-02-2010, 11:06 AM
|  | Commander of the Wild Empire | | Join Date: Jan 2010 Location: n.e.somerset
Posts: 3,216
| | | Re: solar prom
 It'l play havoc with the sat navs... |
21-02-2010, 09:13 AM
| | Knight Commander of the Wild Empire | | Join Date: Jul 2007 Location: Bewdley, Worcestershire
Posts: 5,238
| | | Re: solar prom
Quote:
Originally Posted by artdemole It'l play havoc with the sat navs... | Maybe Tom Tom Baker can come to our rescue? 
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