Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains: 
Colorful Sunspot Using a Monochrome CCD, 





    
        

            Jackie

Colorful Sunspot Using a Monochrome CCD

Technical card

Resolution: 2941x1857

Date:Aug. 1, 2014

Time: 08:45

Frames: 2000

Focal length: 2600

Seeing: 4

Transparency: 8

Description

This sunspot picture was captured in the early morning of August 1st with carbon fiber Astro-professional APO80/520 quintuplet telescope.

The right image was captured by Canon 6D with 2.5x barlow lense, to give a overview of the sun; the up-left image was captured using ASI120MM - 3.75µm - Mono Imager with 2.5x apo barlow (TS) to describe a sunspot cluster; the down-left image was captured by using a 5x apo barlow (TS) in order to give the most detailed feature of a single sunspot.

Although the Mono 120MM is a monochrome imager, I am able to obtain a false color image by using color-projection via PS. Yellow color corresponds to the brightest part; red color correlates to the middle bright area; and the dark blue color correlates to the darkest region of the imaged, i.e., usually the center of a sunspot. The finally false color sunspot looks like a true color image. I fond the projection approach is very helpful here.

The seeing is not bad in the morning and I was able to obtain a decent video using the small quintuplet apo. I am satisfied with this composed image, as you can even see the vivid sun surface flames aside from the sunspots.

A 1.25" fringe killer filter was used.

Comments

Author

JackieChen
Jackie
License: None (All rights reserved)
1012
Like

Histogram

Colorful Sunspot Using a Monochrome CCD, 





    
        

            Jackie