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DSLR Astrophotography 101: Exposure Settings | OPT
- https://optcorp.com/blogs/astrophotography-101/exposure#:~:text=The%20formula%20is500%20divided%20by%20focal%20length%20%E2%89%88,smaller%20than%20even%20the%20best%20film%20stock%20grains.
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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 Exposure Table - ASTROCRUISE
- http://www.astrocruise.com/articles/film/astroexp.htm
- This is a table for determining the approximate exposure times for deep space astronomical objects depending on the f/ratio of the optical system used. The table is based on experience of exposure times from a semi-dark site that result in near maximum acceptable sky fog.
DSLR Astrophotography 101: Exposure Settings | OPT
- https://optcorp.com/blogs/astrophotography-101/exposure
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Astrophotography Settings, Tips and Bonus Techniques …
- https://www.nomadasaurus.com/astrophotography-settings-tips/
- Expert Settings and Advanced Techniques for Astrophotography and Night Sky Shots. The 500 Rule. Lens Compression. Using Extremely High ISO for Composition Adjustments. Noise Stacking. Star Trails. Long Single …
Introduction to Astrophotography
- https://astropix.com/html/astrophotography/exposures_for_astrophotography.html
- For bright scenes such as a crescent Moon with Earthshine in a pretty wide-angle setting in twilight, or any scene where it is bright enough for the meter to work: Expose at the suggested meter readings. Examine the image on the LCD on the back of the camera. Manually adjust the exposure if necessary. Try "bracketing" your exposures.
ISO and Astrophotography | The Best Settings for a Clean Shot
- https://astrobackyard.com/iso-astrophotography/
- The Milky Way. 60 x 2-minutes @ ISO 1600 (tracked). For the image of the Milky Way shown above, I decided to take 2-minute exposures at a modest ISO setting of 1600. A similar result could have been achieved by shooting 40 x 3-minute exposures at ISO 800 because the overall exposure time is the same.
Use the 500 Rule for Astrophotography | Useful Chart to …
- 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
Exposures Easy - Summitlake.com
- http://www.summitlake.com/Astronomy/Exposure_Easy.html
- These tables are calculated using the Appendix A formula t (seconds) = f 2 /SB. where f is the f-ratio, S is the ISO value or film speed, and B is the brightness of the object being measured, in candelas per square foot.
Optimum Subexposure Calculator (and more...) - AstroBin
- https://www.astrobin.com/forum/c/astrophotography/deep-sky/optimum-subexposure-calculator-and-more/
- One key step is that we need to take a test exposure with the specified equipment, to calculate the Background Flux and use it as a reference to give the Optimum Exposure Time for this conditions. Apart of the Optimum Exposure, I added some other calculations that can be useful to plan the astrophotography sessions needed for a given project ...
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