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4 votes

How does image stacking work with astrophotography, when then sky rotates and therefore causes misalignment of the stack images?

The stacking method depends on the subject of the image. Dim objects such as nebulae, galaxies, etc. are very dim and require long exposures (often many minutes) and these images will also contain ...
Tim Campbell's user avatar
  • 3,957
3 votes

Create long exposure images from videos

The output says: Unable to open file '1001.jpg'. The program can't open the file because it can't find the file; since you haven't specified the full path, the ...
osullic's user avatar
  • 12.5k
3 votes
Accepted

How can I align two panoramic images?

I have developed my own solution which worked quite well. The main idea is to use linear regression to find out a 2d transform function. I used 4th order polynomial. I.e: $x' = a_1 + a_2 * x + a_3 * y ...
Wu Yongzheng's user avatar
2 votes

Create long exposure images from videos

Normally, you work in the directory that contains the data, so you do: ...
xenoid's user avatar
  • 21.5k
2 votes

When to use image stacking?

In terms of image noise there is a tradeoff between photon shot noise and dark current noise. Photon shot noise relative to the signal is reduced by longer exposures, and dark current noise relative ...
Steven Kersting's user avatar
2 votes

When to use image stacking?

You lose less when one of the photos is ruined. If you are doing astrophotography and want several minutes or hours of exposure you can have an airplane come through the shot. If you do one long ...
Ross Millikan's user avatar
2 votes

When to use image stacking?

Some reasons why I would use it are: HDRI situations, mainly architecture photography. And several expositions to eliminate tourists or people, again, in architectural photography. I am not too ...
Rafael's user avatar
  • 25k

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