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How Astrophotographers Shoot (Very) Long Exposures - Fstoppers
- https://fstoppers.com/astrophotography/how-astrophotographers-shoot-very-long-exposures-568277#:~:text=If%20you%E2%80%99ve%20viewed%20deep-sky%20astrophotos%20%28not%20landscape%20astrophotos%29%2C,be%20obvious%20that%20multiple%20exposures%20have%20been%20used.
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Astrophotography and Exposure, Clarkvision.com
- https://clarkvision.com/articles/astrophotography.and.exposure/
- For widely varying focal lengths where you want to record a similar light density, include thepixel angular area. This is CEFA: Clark Exposure Factor Angular area, CEFA = aperture area in square centimeters * exposure times in minutestimes angular area in arc-seconds. CEFA = (pi/4) * (aperture diameter in cm)2* time in minutes * angul…
Perfecting Astrophotography Exposure Lengths - YouTube
- https://www.youtube.com/watch?v=n1RbyswFUqs
- What is the best exposure length for you and your gear? I've put together a handy cheat sheet with the best exposure times for different locations. We then d...
Astrophotography: How Long Can You Go? - Sky
- https://skyandtelescope.org/astronomy-blogs/imaging-foundations-richard-wright/astrophotography-rule-of-500-how-long/
- While many astrophotographers follow the "rule of 500" (or 300), some experimentation can help find the right exposure time for your setup. Update Location SUNSET:
DSLR Astrophotography 101: Exposure Settings | OPT
- https://optcorp.com/blogs/astrophotography-101/exposure
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A Few Words on Short Exposures for Astrophotography
- https://skyandtelescope.org/astronomy-blogs/imaging-foundations-richard-wright/short-exposures-astrophotography/
- If you make a sequence of images of a bright star, with one second exposure, you get a star image with a given diameter, if you decrease …
Finding the Optimal Sub-frame Exposure - Astrophotography
- https://www.cloudynights.com/articles/cat/articles/astrophotography/finding-the-optimal-sub-frame-exposure-r1571
- The optimal exposure has 22.5 (round up to 23) sub-frames to stack instead of just 16. More sub-frames mean a bigger reduction in other types of noise such as cosmic rays and hot/cold pixels and we still achieve the same signal quality.
More short exposures or fewer long exposures
- https://www.amateurastrophotography.com/more-short-exposures-or-fewer-long-exposures-which-is-better/
- For example, you can take 12 subs at 10 seconds each, giving a total exposure time of 120 seconds. Or you can collect the same overall exposure time by using fewer long exposures e.g. 2 subs at 60 seconds each (again totaling 120 seconds).
Optimum Exposures Calculator - Gibraltar Astronomical …
- http://www.gibastrosoc.org/sections/astrophotography/optimum-exposures-calculator
- Say we wish to capture 5 minute test exposures. If imaging with a monochrome CCD camera, for each of your filters (and your usual binning settings), capture a single 5 minute test exposure of an area that has nothing but some stars (nothing special should be present, such as nebulosity or …
How Astrophotographers Shoot (Very) Long Exposures
- https://fstoppers.com/astrophotography/how-astrophotographers-shoot-very-long-exposures-568277
- In extreme cases, exposures may run over 12 hours. Unless you have a space telescope, it should be obvious that multiple exposures have been used. A century ago, back in the days of glass plates ...
Optimal Sub exposure length... - Beginning Deep Sky Imaging
- https://www.cloudynights.com/topic/735876-optimal-sub-exposure-length/
- If the calculators are giving one a problem, you might want to start with unity gain and 60 second test exposures, increasing exposure time until you overexposed a more than a few stars. I highly recommend Robin Glover’s exposure time video. It is the most thorough, yet easy to understand treatment.
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