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I have made, with auto-bracketing, a set of 3 pictures of the moon to merge it with the HDR auto-merge function of Photoshop. The problem is that PS Cs5 is not being able to compensate the movement of the moon. Wat can I do to compensate this and merge it to do a HDR picture?

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    \$\begingroup\$ Why would you use hdr for he moon? That's not a very contrasty subject. \$\endgroup\$
    – ths
    Jul 11, 2017 at 17:29
  • \$\begingroup\$ @ths Well, that all depends upon how one looks at it. The full moon is not very contrasty. When the moon is partially illuminated by the sun it is VERY contrasty, but we usually don't worry about the part that is in shadow. But the brightness difference there is so great that even HDR can't usually deal with the difference. Multiple exposures 12 or 14 stops apart would need to be composited, rather than merged using HDR methods. \$\endgroup\$
    – Michael C
    Jul 11, 2017 at 23:22
  • \$\begingroup\$ Related: How can I capture earthshine? \$\endgroup\$
    – Michael C
    Jul 11, 2017 at 23:26
  • \$\begingroup\$ Related: How do I capture the moon and its surrounding context? \$\endgroup\$
    – Michael C
    Jul 11, 2017 at 23:27
  • \$\begingroup\$ As the photographic results from the question and the answers from the second question linked above show, HDR probably isn't the way to go when shooting the moon. \$\endgroup\$
    – Michael C
    Jul 11, 2017 at 23:38

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I have used the free software Hugin to achieve this. Although primarily for building panorama's Hugin is a GUI for various tools including align_image_stack for aligning stacks of images in preparation for creating focus stacks or HDR blends with enfuse. With a little experimentation you can use the tools either from the command line or from within Hugin. You can take the output at any time and use it in Photoshop or follow the process through with Hugin's panotools.

See also panotools wiki.

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