Seeing is is poor today, "observable" moments are short and most of the time is wasted in waiting.
The Sun is still very active today, with no less than 8 AR's :
In the northern hemisphere, AR11580 has moved towards the meridian. AR11578 and AR11581 are moving towards the W limb. To their south and very close to the equator are AR11575 and AR11577. Both are very active groups and apart from the large spot on the leading end (west) of AR11575, another large spot shows up in AR11577, with several smaller spots scattered around. Bright flares are seen in both AR's. The bright plages run along the latitude all the way to the meridian and ends in the huge arch-shaped filament at the east end. This fialment is still intact with lots of changes since yesterday.
AR11573 has turned to the backside, but shows its presence with a firework of prominences on the west limb.
In the southern hemisphere, the pair of AR11579, AR11582 are mid way bwteen the meridian and the E limb. The respective spots are very large. The spot of AR11582 is in the shape of a red-bean and may split. Both show lots of activites. AR11576 is moving towards the W limb with its activities subsided. The huge dark filament has gone.
On the limb, there are many prominences. The huge one on the SSE limb is still showing nearly continuous eruptions. The 2 on the W and SW limb are vigorously erupting.
Telescope: AP Starfire EDT 155 mm f/9.
stopped to 50 mm for disc images, with 4X telecentric lens (f/36) for closeups
filter: Solar Spectrum SO1.5/0.3A with CERF prefilter
Camera: Imperx 4M15
Please goto this site to see the images:
http://www.hkastroforum.net/viewtopic.php?p=253254#253254 |
發表於 2012-9-30 11:41:17