Archive for the ‘Solar’ Category

Solar region 10969 on Aug 22

Wednesday, August 22nd, 2007

A new region rotated over the east limb a couple days ago, region 10969. Current Zurich classification is Hsx, 90 millionths solar hemisphere in area (273 million sqare kilometers — about half the surface area of the Earth). Here is a view of it from 11:22 am MDT this morning with Celestron Nexstar 11 and Phillips Toucam 840K at cassegrain focus.

Active region 10969 on Aug 22, 2007

Sky was partly cloudy, temperature about 80°F, no wind, transparency very good, turbulence about 6/10, location Louisville, CO

Solar Region 10963

Wednesday, July 11th, 2007

The region 10963 has been growing rapidly in size, number of spots, and complexity. (See http://www.raben.com/maps/EarthSideSolarRegions.html). NOAA has the area at 530 milli-hemispheres as of last evening which is around 1.6 billion square kilometers or about 3 times the entire surface area of the Earth (both land and sea).

Solar region 10963 on July 11, 2007

Image was acquired with Celestron Nexstar11 telescope and Phillips Toucam 840K webcam 11:09 to 11:11 am MDT. Images were aligned, stacked, and wavelet sharpened with Registax4. The sky was mostly clear, 2-4 mph wind, some occasional high thin clouds, turbulence 6/10, temperature was 74°F, location was Louisville, CO.

Solar region 10961

Friday, June 29th, 2007

The sky was clear for a while today so I took an image of region 10961 with the Toucam. Region 10961 hasn’t had much activity, but hey is large and has some spots — it doesn’t take much to get us solar fans excited during off season.

Image of active region 10961 on June 29, 2007

Image taken at 1:23 pm MDT with Celestron Nexstar11 telescope and Phillips Toucam 840K webcam. Temperature was 88°F, wind was 2 to 5 mph, sky was clear, turbulence about 5/10,  transparency was excellent, and  location was Louisville, CO.

The Sun on June 2

Saturday, June 2nd, 2007

Region 10960 has been quite active for the past several days and finally rotated into view yesterday. It has produced multiple M-Class flares see http://raben.com/graphs

Image of eastern limb on Jun 2, 2007

Image from around 1pm MDT taken with Baader white light solar filter, Celestron Nexstar 11 telescope, and Canon Xti camera. No wind, temperature around 70°F, turbulence 6/10, excellent transparency, and clear sky.

The Sun on May 16, 2007

Wednesday, May 16th, 2007

Region 10956 is about midway between the east limb (left) and center of the disk. It had a series of B-class, and a couple C-class flares earlier today. NOAA has changed the magnetic classification to beta-gamma-delta, the most dangerous type. M-class flares are expected. Also it has grown by 69% in the last 24 hours. See http://www.raben.com/maps/EarthSideSolarRegions.html for a table showing changes.

Image of the sun on May 16, 2007

Image acquired at 11:50 am MDT with SolarScope LTD 50mm halpha telescope, Televue 2.5X Powermate, and Canon Xti (1/500 sec at ISO 100 for disk, 1/400 sec at ISO 800 for prominences). Aligned and stacked with Registax4, composited and enhanced with Photoshop. Sky was mostly clear, thin haze, temperate 70°F, no wind, and 5/10 turbulence, location Louisville, CO.

Image of the sun in white light on May 16, 2007.

Image of the sun in white light at 1:00 pm MDT with Stellarvue A1010 telescope, Baader filter, and Canon Xti camera (ISO 100, 1/400 sec exposure). Aligned and stacked with Registax4.