Astronomy, Photography and Weather

General Category => Astronomy & Space => Topic started by: brianb on March 27, 2010, 10:35:24 pm



Title: Solar Activity 27 Mar (part 1)
Post by: brianb on March 27, 2010, 10:35:24 pm
A showery day with a few sunny intervals in the morning. The Sun has a huge active area AR1057 not far from the meridian, this is visible to the naked eye (through eclipse glasses!)

Here it is in white light ...

(http://i885.photobucket.com/albums/ac55/bjb11213/2010/March/27/Sun-100327-1030-WL-AR1057-FLTX4.jpg)
2010 Mar 17, 1030 UT. FLT 110, 4x Imagemate (f/28), Baader solar film (ND5.0), Imaging Source DMK21 camera.

in CaK ...

(http://i885.photobucket.com/albums/ac55/bjb11213/2010/March/27/Sun-100327-1123-CaK-AR1057-FLTX2.jpg)
2010 Mar 17, 1123 UT. FLT 110, "2x" Barlow (f/21), Lunt B1200 CaK diagonal, Imaging Source DMK21 camera.

and in Ha ...

(http://i885.photobucket.com/albums/ac55/bjb11213/2010/March/27/Sun-100327-1010-Ha-AR1057-X2.jpg)
2010 Mar 27, 1010 UT. Solarscope 60, "2x" barlow (f/24), Imaging Source DMK21 camera.

Just three minutes later, a flare was in progress:
(http://i885.photobucket.com/albums/ac55/bjb11213/2010/March/27/Sun-100327-1013-Ha-AR1057-X2.jpg)
1013 UT, other details as above.

There is an interesting area of activity near the meridian in the southern hemisphere, though without associated white light features:

(http://i885.photobucket.com/albums/ac55/bjb11213/2010/March/27/Sun-100327-1012-Ha-discC-X2.jpg)
2010 Mar 27, 1012 UT. Solarscope 60, "2x" barlow (f/24), Imaging Source DMK21 camera.

(http://i885.photobucket.com/albums/ac55/bjb11213/2010/March/27/Sun-100327-1126-CaK-discC-FLTX2.jpg)
2010 Mar 17, 1126 UT. FLT 110, "2x" Barlow (f/21), Lunt B1200 CaK diagonal, Imaging Source DMK21 camera.

Here's an overview of the disc activity in hydrogen alpha:

(http://i885.photobucket.com/albums/ac55/bjb11213/2010/March/27/Sun-100327-1023-Ha-discS-X1.jpg)
2010 Mar 27, 1023 UT. Solarscope 60, prime focus (f/8), DMK41.

(continued in part 2)