Sun Fun ('.')

RE: Sun Fun ('.')

Postby paulc » Sun May 08, 2011 1:13 pm

What a blustery day! There are four active regions visible on the Sun with plage only two numbered on the SOHO site. Two due North, a third north east and a fourth south west. There are four sunspots one large due north, two north east and two south east.
Large prominences are on the north east and west limbs.An unusually long thin one skirts the south east limb. Long filaments are in the northern hemisphere and a shorter one in the south.

[image]local://3228/6F3F4673ED7140BCA13646C45912AD47.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Tue May 10, 2011 11:36 am

There are six active regions today I only managed four of them, perhaps I'll update later if the Sun stops hiding behind those clouds.

The four regions I have due north, east and in the south east all have large spots and plage. A long filament is located due north.

A masssive prominece is due north with a smaller companion. Peaked prominences are located on the limb north west, south east and due south.

[image]local://3228/ABC7A61650294F059A04B9DD94381F74.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Sun May 22, 2011 6:03 pm

Not a good day for consistent viewing. I think I have the correct line up of active regions, I could see spots in three of them the largest one central with penumbra. Regions of plage were visible around the two active regions close to the limbs. A group of significant prominences is located on the north east limb and a very large one on the south east limb. Some smaller ones are around the south west limb.
Long filaments are visible in the north and south east quarters.
[image]local://3228/6C2C5FB807934AD0B7116ED2114A3AE5.jpg[/image]
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RE: Sun Fun ('.')

Postby paulb » Mon May 23, 2011 7:40 am

Hi Paul,

That's another fine sketch with plenty of detail. I didn't bother yesterday. I thought the wind was to strong.

We've had another eruption I notice. So we can expect some nice deep red sunset's during this coming week.
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RE: Sun Fun ('.')

Postby paulc » Tue May 31, 2011 5:36 pm

Lots of activity today, six regions in all. The two regions with the most sunspots are located due west. The other four are spread in a line across the northern hemisphere. They are all accompanied by plage. Long filaments are located around the disc with broad ones due south and almost due north. Large prominences are visible on the limb in each quarter.

[image]local://3228/37BB84EAAE54485F87B322365DC58EF5.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Sat Jun 04, 2011 1:50 pm

Lots of activity again with eight regions of sunspots spread across the disc with assocuiated plage. Also most notable are two very large prominences due west and south. The one in the west looks like it is working up to a mass ejection. A group of small prominences are due north and a single one on the south east limb. Filaments are around the active regions in the east with some very broad.

[image]local://3228/558F07482D784A74AF6554156800B5BE.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Thu Jun 09, 2011 1:00 pm

Quite a bit of activity today. Four recorded regions I picked up from SOHO satellite, but it did not record others I observed , especially the one due south. Plage is associated with each active region and several broad filaments are close to the largest sunspot in AR 11232. A large turbulent prominence is spread along the north east limb and a tall trumpet like one is along the south west limb. Happy hunting.

[image]local://3228/8E59EE8CEFF9430587BDBDC252249FC7.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Sun Jun 19, 2011 2:23 pm

The large sunspot in AR11236 is clearly visible in the south east quarter and is a double with penumbra and plage. A second spot is visible close by in the same AR. Numerous large prominences are along the north west(with plage) and south east limbs. A large broad filament is in the south west quarter, two thinner ones in the south east quarter and a third thin one near the north west limb. Worth a look.


[image]local://3228/2CF33DAA747C4427854460BF1CEDE75E.jpg[/image]
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RE: Sun Fun ('.')

Postby paulb » Sun Jun 19, 2011 2:56 pm

Here is the view in white light, using a baader filter-WO ZS66SD-24mm TV Pan with deep Orange filter. Drawing made between 10:45 and 11:00hrsUT.

AR1236 is certainly the brightest group at the moment. Though AR1235 and AR1237 were showing faintly. But are not shown in this drawing.

Mount Wilson Seeing scale.

3

B0: tilt of the sun's equatorial plane:1.49
L0: longitude of central meridian:179.09
P:position angle of north pole, from central north, measured eastwards:-8.05

Data from Tilting Sun software. Which is on the accompanying July CD.


[image]local://4705/6910C6D1539A420CA1352065B42BF8B5.jpg[/image]
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RE: Sun Fun ('.')

Postby paulb » Thu Jun 23, 2011 9:26 pm

Hope you don't mind me tagging onto you're thread Paul [;)]

Here is a WL Baader filtered drawing made this afternoon. This time I was using a dark green filter, which actually enhances. Granulation but also Faculae. Which was visible during my period of observation.


[image]local://4705/D25318D70DCC4B6EB4D4F49FCA4E8525.jpg[/image]

The two spot's are AR1236-1240.
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