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Exposures for Deep-Sky Astrophotography
- https://www.astropix.com/html/i_astrop/film/exposure.html#:~:text=Exposures%20for%20Deep-Sky%20Astrophotography.%20Exposures%20for%20astrophotos%20can,run%20from%20about%2010%20to%2030%20seconds.%20
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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.
DSLR Astrophotography 101: Exposure Settings | OPT
- https://optcorp.com/blogs/astrophotography-101/exposure
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Finding the Optimal Sub-frame Exposure
- 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 …
More short exposures or fewer long exposures
- https://www.amateurastrophotography.com/more-short-exposures-or-fewer-long-exposures-which-is-better/
- As the signal is increased with longer exposure times, the noise will increase to the value of the square root of the signal. In other words, if the exposure signal increases by 100 times, the noise would increase by 10 times – the square root of the signal increase (giving an increase of 10% noise).
How Astrophotographers Shoot (Very) Long Exposures
- https://fstoppers.com/astrophotography/how-astrophotographers-shoot-very-long-exposures-568277
- So, to summarize, here’s what we need to do to take a long exposure shot: Take multiple exposures of the target (called “light” exposures). The exposures should be as long as possible. Take ...
Optimum Exposures Calculator - Gibraltar Astronomical …
- http://www.gibastrosoc.org/sections/astrophotography/optimum-exposures-calculator
- Optimum Exposures Calculator. Astrophotography can seem like a fair bit of guess-work. In general the process of capturing images involves doing so at a certain exposure length and multiple times for the same target, using the same filter. The idea here being to combine the images captured during calibration in order to reduce the pronunciation of noise and increase …
Use the 500 Rule for Astrophotography - AstroBackyard
- https://astrobackyard.com/the-500-rule/
- 500/ 50 / 1.5 = which will result in 7 seconds of exposure. The crop-factor for Canon cameras is almost the same as Nikon’s – 1.6. The formula should look like this: 500 / focal length / 1.6. Now, if you use the same 50mm lens, the formula would be: 500 / 50 / 1.6 = resulting in 6 seconds of exposure. Shutter Speeds
Optimal Sub exposure length... - Beginning Deep Sky Imaging
- https://www.cloudynights.com/topic/735876-optimal-sub-exposure-length/
- Page 1 of 2 - Optimal Sub exposure length... - posted in Beginning Deep Sky Imaging: Hi everyone, Ive read Chuck Ansteys rather technical article on sub exposure length (and number), but Im unable to calculate my own optimal exposure length, as I dont have the tools to normalize pictures… And Id likely make too many mistakes along the way. According to light …
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