Sunday, November 10, 2013


Sunspot AR1890 has been very active having produced 3 X-class flares in 5 days.  Here are some images of AR1890.  Unfortunately there was no flare activity when I was imaging.

AR1890 - November 09, 2013












A prominence from the 9th -






A very long filament close to the NW Limb.

 

Thursday, November 7, 2013

I thought that I would post some facts about our nearest star.

Mean Distance from Earth - 1.496 X 10^8 km / 92,946,000 mi
At the speed of light - 8 min 19s
Visual Brightness - -26.74 (Compare to Sirius @ -1.46)
Mean Diameter - 1.392684 X 10^6 km / 865,413 mi
Equatorial Circumference - 4.379 X 10^6 km / 109 X Earth
Volume - 1.412 X 10^18 km^3 / 1,300,000 X Earth
Mass - 1.9891 X 10^30 kg / 333,000 X Earth
Temperature Photosphere - 5,778 K / 5,504 °C / 9,941 °F
Sidereal Rotation @ Equator - 25.05 Days
                            @ Poles - 34.4 Days
Composition - Hydrogen   73.46%
                       Helium       24.85%
                       Oxygen      0.77%
                       Carbon       0.29%
                       Neon          0.12%
                       Nitrogen     0.09%
                       Silicon         0.07%
                       Magnesium  0.05%
                       Sulfur           0.04%


Wednesday, November 6, 2013

Here is a chart that compares the last 3 solar cycles with the current cycle 24.
Solar cycle start dates - 21 - June, 1976, 22 - September, 1986, 23 - May, 1996, 24 - January, 2008
Chart from - Solen

This solar cycle is quite weak compared to cycles of the recent past.


Tuesday, November 5, 2013

Here are a few images from November 04, 2013.  I had a short time to image and the seeing was poor so this is all of the images that are worth posting.

AR1885 -







Another view of AR1885 -





A Big filamnet -





And some detail at the Northwest Limb -






Sunday, November 3, 2013

November 3 Full Disk

Today has been the first opportunity I have had in the last couple of weeks for any imaging , although the sky was clear the viewing conditions were very poor . It was not a day for any kind of close ups but I did manage to salvage a disk shot for today .



Saturday, November 2, 2013

Not much sun lately but  I have a couple of images to post.

Proms from October 30, 2013 -










Further out





And AR1877 and AR1879


I thought that I would post an image that I captured last June and a NASA video of the same feature.  This image was taken with my Coronado PST, 2X Barlow and my DMK 21 camera.





NASA Solar Tornadoes
Video