Archive for September, 2008

The Sun 29-9-08 – Two Large Proms

September 29, 2008 Leave a comment

Woke up to unexpected clear blue skies with no cloud today which makes up for missing all the fun with that big prom yesterday. The same two proms were still visible in the SE and NW and seem to be very quiescent now with minor changes in structure over a number of hours. No surface activity visible.

Categories: Solar

The Sun 27-9-08 – Two fine proms

September 28, 2008 Leave a comment

Quiet on the surface today, but there are still two fine proms in the north and south. The prom to the south (upper left on disk shot below) developed markedly by the end of the day and grew in size. During the 28th this one enlarged even more, erupted and then reconnected to the surface with quite a few superb images and sketches of it appearing on the Cloudy Nights forum, sadly I missed the whole show as we were clouded out the whole day.

Categories: Solar

The Sun 26-9-08 – Nice proms plus last of AR11002

September 26, 2008 Leave a comment

After a foggy morning the murk lifted to reveal a cloudless sky this afternoon. The small active area that produced the eruptive event this morning could clearly be seen in the east. AR11002 is right on the west limb now and could hardly be seen in Ha, but was quite clear in CaK light. The proms in the north west formed a fine parade of hedgerows, small arches and flames. Normally I wouldn’t recommend using a 5X powermate on the PST as the results are usually pretty ugly, but I had another go today and the proms, while bloated, are not too bad considering the high magnification (see last two images below) – this is pretty much at the limit of what the PST can resolve.

Categories: Solar

The Sun 24-9-08 – AR11002 Fades

September 24, 2008 Leave a comment

Managed to get some images between 14.50 and 17.06 BST today after an alert on the CN solar forum that a big prom had been seen. Seeing was poor despite occasional patches of clear blue sky with much turbulence crossing in front of the sun which greatly reduced the resolution of fine features in the proms and AR. AR11002 is fading fast now and only tiny pores were visible today in CaK compared to the obvious spot seen yesterday. The large prom was a multiple arched affair.

Categories: Solar

The Sun 23-9-08 – A New sunspot AR11002

September 23, 2008 Leave a comment

Just arrived back from a short holiday in Cornwall to find that a new active region has rounded the east limb and is putting on a fine display. This one is a solar cycle 24 region too! Cleaning the DMK 41 with 100% cotton buds seems to have removed the persistent dust, but the DMK21 still has dust motes which will need more work to shift. Great to be able to see something other than background noise in the PST CaK today and it stood up well to high magnification of the spot group. Some fine arch proms on the north limb and smaller stuff in the south. The active region is still growing at the moment so this one should be interesting over the next few days.

Categories: Solar

The Sun 18-9-08 – Proms and quiet disk

September 23, 2008 Leave a comment

A glorious sunny day today for a change. Only two main proms in the north and no surface activity.

Categories: Solar

The Sun 13-9-08 – Various views of a quiet disk

September 13, 2008 Leave a comment

Amazing blue-sky blazing sun sort of a day for the most part although it did cloud up from the south by 4pm. Although visually clear the atmosphere had other ideas and was causing the familiar jelly dance on the suns surface, so prominence images in particular were not processing out as sharp as they could.

The CaK image also proved tricky to process as the surface is easy to burn out if the gain is set too high and again after stacking if too much wavelet processing is applied.
It was a quiet sun again today with the largest prom in the west and no real surface interest to view.

Categories: Solar