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Astrophotography for beginners & shooting it on a DSLR | Adobe
- https://www.adobe.com/creativecloud/photography/discover/astrophotography.html#:~:text=Try%20exposures%20of%205%2C%208%2C%20or%20even%2010,to%20get%20enough%20light%20for%20a%20good%20exposure.
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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…
Astrophotography for beginners & shooting it on a DSLR
- https://www.adobe.com/creativecloud/photography/discover/astrophotography.html
- Try exposures of 5, 8, or even 10 seconds, and examine your results to see what looks best. Aperture: You’ll likely need to use a lower aperture setting (called an f-stop ), because while higher f-stops will allow for an image with more depth of …
DSLR Astrophotography 101: Exposure Settings | OPT
- https://optcorp.com/blogs/astrophotography-101/exposure
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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. When a child is taught to ride a bike, we often put training wheels on the back; they straddle the rear wheel to ensure the bike cannot tip over while the child learns to keep their balance.
More short exposures or fewer long exposures
- https://www.amateurastrophotography.com/more-short-exposures-or-fewer-long-exposures-which-is-better/
- Obviously these images are very rough looking, as a 2 minute total exposure time using an unmoded DSLR is nowhere enough to get any kind of decent image. Remember you need to make sure you are taking as many subs as you can to get the best results possible. There are of course limits to how long you will be able to expose for.
Exposure Times — Starizona
- https://starizona.com/blogs/tutorials/exposure-times
- Exposure Times. Determining the proper exposure time is as much an art as a science. For deep sky imaging, suffice to say that longer is always better, at least until light pollution starts to overwhelm the image. From a very dark location, or with a narrowband light-pollution filter (such as a Hydrogen-Alpha filter), the only limit may be the camera software, …
Use the 500 Rule for Astrophotography - AstroBackyard
- https://astrobackyard.com/the-500-rule/
- With this kind of lens, the exposure time will be about 21 seconds according to the 500 rule (500/24). The sky will move about 0.09 degrees during these 21 seconds (0.0042*21). 0.1 degrees = 7.3 pixels with this kind of a camera (81.4*0.1).
Why use exposure time over 30 seconds?: …
- https://www.dpreview.com/forums/thread/4472350
- I typically shoot 4-7 minute exposures, at 420mm to 800mm. I typically shoot for at least 3 hrs minimum total exposure time. With 6 minute subs, I only need 30 to get that total exposure...Assuming just a modest 420mm focal length, stacking subs from a fixed tripod, you would be limited to 0.6" subs...
Determining optimal exposure time - Cloudy Nights
- https://www.cloudynights.com/topic/715201-determining-optimal-exposure-time/
- Sub exposure time . It's super hard to give examples here without exploring specific targets. But let's say we're imaging a very faint emission nebula DSO in a bortle 6 sky and we're dealing with nasty skyglow. Without filter: We'll hit diminishing returns in sub exposure in ~ 10 seconds... But we know we want 30 seconds to overcome read noise.
Stellar apparent magnitude vs exposure times: …
- https://www.dpreview.com/forums/thread/3920293
- With my Atik and a 110/620 mm telescope the formula Log D * 5 + 15 (that is 20 mag) will do for a few images taken under good conditions with several five minute subs, near perfect focus, splendid transmission and a steady atmosphere). Usually with a DSLR and two-four minute subs the result is more like Log D * 5 + 13.
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