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Sun

by Alejandro Tombolini

Introduction

Publicated in Gallery - Complete description of a Sun image - Main notes: RangeMask to make white the solar flares. Date: Jul 2012.

Processing

The first corp is due to the image is not correctly focused and with stack of 1000 frames in Registax there was not improvements.

Sun

After the crop I did a DynamicBackgroundExtraction as is needed a flat background for the next range mask.

Sun

I built three different range mask to be used in the next process and name they as RM1, RM2 and RM3

Sun

Sun

Sun

ChannelCombination to built the RGB Image.

Sun

Using RM2 to protect background apply HistogramTransformation to give color to the Sun.

Sun

Using RM1 to protect background and the sun apply HistogramTransformation (see Midtones) to have the white effect in the corona.

Sun

A little noise reduction in the background is needed. I used ACDNR decreasing StdDev to 0,4 and with 6 iterations.

Sun

Sun

With RM2 protecting the background used UnsharpMask to give details in the surface of the sun. A little Deringing in Dark: 0,15 is needed to protect the intersection between the yellow and the withe in the circumference.

Sun

Sun

A little more contrast with LocalHistogramEqualization and using RM2 as protection in background.

Sun

Signature.

Sun

Finally if it is wanted to show some detail as the faintest solar flares can be cropped in a clone the area and then insert the new image using ImageInsert script.

Sun

Sun

Final image.

Sun

Last Update: 23/03/2014 19:23 UT

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