Example of Multipoint Tri-Color Registration

final3.jpg (205318 bytes)

Veil Nebula by Robert Bickel

Telescope: 

Robert Bickel's 8" Homemade Newtonian.  Roberts's webpage
Film & Exposure: Red, Green and Blue filtered images on Tech Pan 2415
Other Info: Images provided by Chuck Vaughn as an example of a registration challenge
Processing:
Stacked using Multipoint Feature of Picture Window
30 Points Registration using the default Hardy Method with R=0.2
Levels adjusted in PhotoShop 5.0

 

Closeup 1:1 Comparisons of 2 Point vs 30 Point Registration

    2 Point - Shift/Rotate/Scale

    30 Point Hardy Registration with R=0.2

final3b.jpg (208163 bytes)
    The above comparison shows the dramatic improvement offered by Picture Window multipoint stacking.  This Veil Nebula example had non-linear distortion which varied across the frame for each of the three images.   Non-linear variation also exists in low cost scanners which has been the primary inhibitor to high quality image stacking.

Return to AF9Y Astrophotos

 Return to AF9Y WebPage on Moonbounce and Weak Signal Detection