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Deviousness `anmari has been spreading her infectious positivity throughout our community for over 6 years. Throughout this time Ana has been at the core of all things devious, passionately developing an eclectic gallery, helping organise devmeets, participating in chat events and also recently completed dedicating her time as a Community Volunteer. We are absolutely delighted to bestow the Deviousness Award for May 2013 to `anmari, congratulations! Read More
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Sta.sh
How exactly does stacking work? I haven't been able to find much info on how to actually do it. And what program do you use for it?
For star trail images I use a small bit of freeware called 'Startrails' [link] . You just select the images you want to use in the star trail image and it automatically stacks them together.
Stacking is generally when you add the pixel values of images together. Like if the pixel value of row 1, column 1 in one image is 5 and the similarly positioned pixel in a second image is 7, adding them would have a pixel value of 12. And there are other ways to do it too, like averaging the values and other fancy things.
I'm not actually sure what type of stacking this particular program seems to use. You don't really have to know I guess, just throw the images in. If you want more control over how the program stacks the images you could use other programs like 'Iris'. I think Photoshop lets you do a few different similar things as well.
Thats a 50% resized individual image. It's the one just as the satellite was flaring.