Laboartorium Solaris: mildly angry Sun

The Sun saluted the Sunday with two flares. Both on the side facing the Earth, apparently.

Now the only form of activity to observe is a truly massive coronal mass ejection :)

 

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

 

Aquisition time (start of the session) : JD 2456726,055903 (09.03.2014, around 17:22 MSK).

Image orientation: scrambled

Equipment:

Canon EOS 60D (unmodded) coupled to Coronado PST via Baader Planetarium Hyperion Zoom 8-24 mm Mark III click-stop system eyepiece and Baader Planetarium M43-to-T2 conversion ring and mounted on photo-tripod.

Aperture 40 mm

Native focal length 400 mm

Projection zoom setting: 20 mm.

Effective focal length ~900 mm

Tv = 1/50 seconds

Av (effective) = NA

ISO 1000

Exposures: 66 (all in)

Processing: images were converted to monochrome and exported as 8-bit .TIFFs. Images were assembled into stack in ImageJ and saved as .AVI. AVI was processed in Autostakkert!2.

Resulting image was subjected to Richardson-Lucy deconvolution in AstraImage 3.0 (Cauchy type PSF, size 2,8 units, 10 iterations) and tonemapping in Luminance HDR (Mantiuk,06, contrast factor 0,291, pre-gamma 0,515).

High-pass filtering, Shadow/Highlight adjustment and coloration made in Photoshop.

Note: time to move on. This technique is toooo time consuming and vulnerable to light bouncing somewhere in optical path...

 

 

Done