Sunspot AR2396 8 August 2015

Solar Prominence 8 Aug 2015

Solar activity has increased over the last few days, as one of the largest Sunspots AR2396 in the recent months is visible on the Solar limb that is facing towards the Earth. In just one day its surface increased by 50%. The growing sunspot group stretches more than 150,000 km from end to end. All by itself, the primary dark core is more than three times the size of Earth and can be observed even by naked eye using the adequate protection. View of the Sunspot and its surrounding in H-alpha light:

Sunspot AR2396 8 Aug 2015

Solar surface 8 Aug 2015

Sunspot AR2192 28 October 2014

The biggest sunspot in the last 25 years. It has unleashed many strong X-class and M-class solar flares. The most intense of these flares have caused HF radio blackouts and other communication disturbances on the dayside of Earth.

Weather here was very unfavorable for any telescopic high resolution imaging of this enormous sunspot. Here is a quick image I took with telephoto lens during my job time.

Object: Sun and sunspots
Date: 28. October 2014 12:56 UT
Equipment: Nikon D3000, Tamron 70-300@300mm, f/5.6, ISO 100, 1/640s

Sunspot AR1944

A few days ago, on New Year’s Day, a sunspot appeared over the western edge of the Sun. AR1944 is huge and actually consist of more than 50 individual sunspots, the largest of them is far larger than the Earth itself. It was possible to observe it using only unaided eye and proper solar filter (e.g. eclipse glasses).

It has been classified as having a beta-gamma-delta magnetic field and these fields are prone to instability that can produce X-class solar flares. During the rotation around the visible limb of the Sun it was quiet and produced only one major X1 flare.

Object: Sunspot AR1944 and AR1946 in the upper right corner
Date: 12 January 2014 12:40 UT
Equipment: Basler acA640-100gm, GSO 200/1200
Capture and processing : FireCapture, RegiStax6

During imaging the seeing was very poor and was even more obvious while imaging at higher focal ratios.

Object: Sunspot AR1944
Date: 12 January 2014 12:55 UT
Equipment: Basler acA640-100gm, GSO 200/1200 + 2xBarlow
Capture and processing : FireCapture, AutoStakkert2, RegiStax6

This giant spot is about to rotate off the face of the Sun, this was probably my first and last shot of it. But this is not the only obvious sunspot currently visible on the Sun. I managed to capture a few other.

Object: Sunspot AR1949(left) and AR1953(right)
Date: 12 January 2014 12:45 UT
Equipment: Basler acA640-100gm, GSO 200/1200
Capture and processing : FireCapture, AutoStakkert2, RegiStax6

Object: Sunspot AR1949
Date: 12 January 2014 12:55 UT
Equipment: Basler acA640-100gm, GSO 200/1200 + 2xBarlow
Capture and processing : FireCapture, AutoStakkert2, RegiStax6

Sunspots on 23 September 2013

Object: Sunspot AR1846
Date: 23 September 2013 11:35 UT
Equipment: Basler acA640-100gm, GSO 200/1200 + 2x barlow
Capture and processing : FireCapture, AutoStakkert2, RegiStax6
Object: Sunspot AR1846
Date: 23 September 2013 11:50 UT
Equipment: Basler acA640-100gm, GSO 200/1200
Capture and processing : FireCapture, AutoStakkert2, RegiStax6
Object: Sunspot AR1849
Date: 23 September 2013 12:10 UT
Equipment: Basler acA640-100gm, GSO 200/1200 + 2x barlow
Capture and processing : FireCapture, AutoStakkert2, RegiStax6

Sunspot AR1785 and AR1787

Sunspot AR1785 is one of the biggest groups of Solar Cycle 24 in the southern limb. Despite favourable magnetic conditions for X-class solar flare the spot did not produce any strong flare. The following images were recorded in bad seeing 2/10 and windy weather.

Object: Sunspot AR1785
Date: 5 July 2013 11:05 UT
Equipment: ASI120mm, GSO 200/1200 + 2x barlow, cropped acquisition for greater framerate
Capture and processing : FireCapture, AutoStakkert2, RegiStax6, Gimp
Object: Sunspot AR1785 and part of AR1787
Date: 5 July 2013 11:04 UT
Equipment: ASI120mm, GSO 200/1200 + 2x barlow
Capture and processing : FireCapture, AutoStakkert2, RegiStax6, Gimp