Sun Fun ('.')

RE: Sun Fun ('.')

Postby paulc » Mon Aug 02, 2010 1:40 pm

Large facula and large sunspot still visible on the disc. A smaller sunspot is close to the large one. Two broad filaments are also nearby. A smaller facula with a prominence is close to the Eastern limb and North of that a larger looping prominence is visible. Sun has disappeared again, maybe more later.

[image]local://3228/E179B0752EBD4E35BD7230672ABEEC55.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Tue Aug 03, 2010 3:46 pm

The large sunspot and facula are still on the disc. Two smaller spots are just visible close to the large one in the detuned pst, but not the solar film scope. A large broadened filament is near the South West limb. Three large prominences and two smaller ones are around the Eastern limb. Three small prominences are along the North Western limb.

[image]local://3228/8A9F15D0E0F84484A0791E4EEF3178E6.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Thu Aug 05, 2010 1:20 pm

The second Sunspot Phillip imaged yesterday is clearly visible near the Eastern limb along with the older larger one towards the West. Large prominences are visible on the North Eastern and Western limbs. Sun's gone in again, so that's all for now.

[image]local://3228/7617624712FC400B8E4AAC914EF37368.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Mon Aug 09, 2010 7:00 pm

Some late sun here. The large sunspot is still with us almost central on the disc with accompanying faculae. Towards the North Eastern limb is a group of broadened filaments and one other near the Northern limb. Around the limb in each zone are small prominences in groups, the most unusual in the shape of a letter "Y" on the South Western limb.

[image]local://3228/6F388E5E14774C64AD7EE13A2F7FB0B7.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Tue Aug 10, 2010 11:40 am

Close scrutiny of the large sunspot shows it is elongated and has penumbra. The facula surrounding it extends towards the eastern limb taking in two broadened filaments. Within the north western quarter is another small sunspot and facula with two small filaments. A group of prominences of varying sizes is visible along the north eastern limb. Two other prominences are on the southern and north eastern limbs.

[image]local://3228/A2ADDD25BA214F5C86B2182D20C8146D.jpg[/image]
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RE: Sun Fun ('.')

Postby paulb » Tue Aug 10, 2010 2:26 pm

Here is a drawing that I have just made for comparison with Paul's.

Details.

Telescope: 10" F4.8 Dobson reduced to f2.4 and focal length, 600mm using 0.5x reducer.
Baader CB filter and 24mm pany
Magnification x25
Time 11:42ut


[image]local://4705/EEDBE221980A4B1397BB7E292623606F.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Tue Aug 10, 2010 11:36 pm

Your artistic skills are certainly better than mine Paul, neat shading.
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RE: Sun Fun ('.')

Postby paulc » Thu Aug 12, 2010 3:03 pm

Dodging clouds and downpours today. The sunspot region is still active and in the north west quarter (11.30am). It contains two largish spots, one small one and a filament. To the east of this region are three broadened long filaments. Large prominences are visible on the limbs in the north east, south east and south west. The one in the south west is like a fountain!
There is probably more activity, but the rain and clouds are back.

[image]local://3228/481462EAFFE04D4790ED162410656203.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Sat Aug 14, 2010 12:53 pm

A great deal of activity in the northern hemisphere this morning, the persistent large facula has up to six sunspots that I can see in the detuned pst, one is large. Two pairs of broadened filaments are to the east of the facula. There are four dark regions close to a prominence on the north east limb. Groups of prominences of varying size are visible around the remaining three limb regions the largest like a fountain again on the south west limb. Three dark regions are close to the south pole.

The second image shows what I saw happen for a short period of time. A large dark mass appeared where the sunspots were about 10.45am. Can't be exact about the time or what happened. I detuned the pst, blew dust from the objective, but it remained for a short while then reverted to its previous state. Not a mini cloud or a tree branch, any offers.

[image]local://3228/793E94B21D564B4BB5CDAE163CA2B481.jpg[/image]
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RE: Sun Fun ('.')

Postby paulc » Sun Aug 15, 2010 2:10 pm

Well it's a nice day lots of sunshine, makes a change. Some surprising sunspot activity. Yesterday I was puzzled by the dark mass I saw in the large facula region, today I know what it was, lots of sunspots slightly out of focus in the lower region of the pst. When translated to the sketch it was in the north western quarter. I used the solar film scope today to look at the large facula region and counted fifteen sunspots, I have added an extra sketch to show them.
There is a bright region across the middle of the sun with two filaments and there is a large broadened filament above it. Three semi-dark regions are next to this filament and the four to the north east limb persist. Prominences are visible in the north east and west and the south east. A large loop is in the south east and a long prominence is near the South pole.

[image]local://3228/0EE52D4A6B1B41648659F97EF01631B5.jpg[/image]
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