I am always impressed to see what a 120 millimetre apochromat can manage, even when its aperture is reduced to 90 millimetres.
A sunspot group that resembled a flattened smiley face was located in the southern hemisphere one week ago, during the Mercury transit. Amazingly, a new group in the northern hemisphere looks similar, at least superficially, with pattern recognition in high gear :-)
left: 9 May 2016
right: 15 May 2016
The sun
Date: 15 May 2016, 14:30 (12:30 GMT)
Telescope: Skywatcher Esprit ED 120
Mount: Astrosysteme Austria ASA DDM160
Solar filter: Thousand Oaks Type 2+, 90 mm diameter
Camera: Lumenera SKYnyx2-2M
Seeing: moderate
Exposure: 11 ms
Number of images in stack = 20 x 3 (three image mosaic)
Photo stacking: AviStack2