Reel around the Sun, revolution II: 13.07.2013, 11:44:28 MSK.

The Sun is sleeping quietly... No prominent spots, but a lot of other fine features.

 

WARNING! Sun is dangerous, use proper filters for observing and imaging!

 

Aquisition time: 13.07.2013 11:44:28 MSK (GMT+4).

Equipment:

Canon EF 70-200 f/2.8L IS + USM lens + EF 2x III extender @200 mm with double polarization filter on EOS 60D mounted on photo tripod via Manfrotto 410 Junior geared head (really great head).

Filter: Cokin linear polarization filter @90° to Doerr circular.

Aperture 71 (50) mm

Focal length 400 mm

Tv = 1/3200 seconds

Av = f/8

ISO 100

Exposures: 1

Processing: in Canon DPP the contrast of original RAW was set to "linear", and black levele was set to 0EV. RAW was converted into 16 bit TIFF. The file was converted to monochrome in Photoshop and "creatively" processed with curves.

Done