Sergei Golyshev (AFK during workdays)
Laboratorium Solaris: the most reluctant dataset of the Sun
Finally I had made my full disk Solar image from data recorded a week ago!
The most interesting feature is at the bottom of an image - a spiraling plasma filament that looks like a tether of a baloon :)
WARNING! Sun is dangerous, use proper filters for observing and imaging!
Aquisition time: JD 2456640.821701 (14.12.2013 11:43:15 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 ~800 mm
Tv = 1/20 seconds
Av (effective) = ~f/20
ISO 800
Exposures: 13
Processing: images were converted to monochrome (this is a key step) and exported as 8-bit .TIFFs. Images were assembled into stack in ImageJ and saved and resulting dataset was dissected into 10 overlapping panels. Panels were saved as .AVIs and were processed in Autostakkert!2.
Resulting images were stitched back in Microsoft ICE and stitched image was subjected to Richardson-Lucy deconvolution in AstraImage 3.0 (Gaussian type PSF, size 2 units, 7 iterations).
On this step I decided to do something new, and since stacked image is to all extents and purposes an(sic?) HDR image and since my solar images lack contrast I tonemapped it in Luminance HDR (formerly known as QTPFSGUI) using Mantiuk'06 tonemaping operator (contrast factor 0,291; saturation factor 0,8; detail factor 1; pregamma 0,515). This step causes the second loss of bit depth, but it already doesn't matter.
High-pass filtering and coloration were made in Photoshop.
Note: I'm starting to feel the first symptoms of "Solar aperture fever".
Laboratorium Solaris: the most reluctant dataset of the Sun
Finally I had made my full disk Solar image from data recorded a week ago!
The most interesting feature is at the bottom of an image - a spiraling plasma filament that looks like a tether of a baloon :)
WARNING! Sun is dangerous, use proper filters for observing and imaging!
Aquisition time: JD 2456640.821701 (14.12.2013 11:43:15 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 ~800 mm
Tv = 1/20 seconds
Av (effective) = ~f/20
ISO 800
Exposures: 13
Processing: images were converted to monochrome (this is a key step) and exported as 8-bit .TIFFs. Images were assembled into stack in ImageJ and saved and resulting dataset was dissected into 10 overlapping panels. Panels were saved as .AVIs and were processed in Autostakkert!2.
Resulting images were stitched back in Microsoft ICE and stitched image was subjected to Richardson-Lucy deconvolution in AstraImage 3.0 (Gaussian type PSF, size 2 units, 7 iterations).
On this step I decided to do something new, and since stacked image is to all extents and purposes an(sic?) HDR image and since my solar images lack contrast I tonemapped it in Luminance HDR (formerly known as QTPFSGUI) using Mantiuk'06 tonemaping operator (contrast factor 0,291; saturation factor 0,8; detail factor 1; pregamma 0,515). This step causes the second loss of bit depth, but it already doesn't matter.
High-pass filtering and coloration were made in Photoshop.
Note: I'm starting to feel the first symptoms of "Solar aperture fever".