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How to Focus your Camera For Astrophotography
- https://astrobackyard.com/how-to-focus-astrophotography/
- Because astrophotography takes place at night, you often experience a drop in temperature between the time you set up your camera, and when night sets in. Always take extra time to focus your camera properly, and continue to monitor focus throughout the night. As the ambient temperature changes, your focus does too.
A Primer on Back Focus in Astronomy - Agena Astro
- https://agenaastro.com/articles/miscellaneous/a-primer-on-back-focus-in-astronomy
- The back focus of a telescope is simply the maximum space you have to insert accessories such as diagonals, binoviewers, cameras, filters wheels, and other accessories and still achieve focus. It’s a purely mechanical parameter that’s defined by the focal length of the telescope and the physical length of the optical tube and focuser.
Backfocus in Astrophotography - Atik Cameras
- https://www.atik-cameras.com/news/backfocus-astrophotography-cameras/
- The backfocus of a camera is the distance from the plane of the sensor to the front of the camera. These measurements are available on all of …
How to Set the Back Focus for Your Telescope (Guide)
- https://optcorp.com/blogs/deep-sky-imaging/how-to-set-the-correct-back-focus
- Back focus, in its simplest definition, is the measurement between the last optical component, such as a corrector or reducer, of your telescope and the focal plane. When using your telescope stock without any accessories, you can easily …
Back Focus distance for DSLR lenses? - Stargazers Lounge
- https://stargazerslounge.com/topic/38049-back-focus-distance-for-dslr-lenses/
- With reference to back focus distances.. T mounts are 55mm flange to Focal Plane but other lenses vary canoncs haev the shortest back focus whiuch is one of the reasons why its faitly eay to use other manufacturers lenses with canons as …
Backfocus with DSLR - DSLR, Mirrorless & General ... - Cloudy Nights
- https://www.cloudynights.com/topic/549134-backfocus-with-dslr/
- If you have a Nikon DSLR I think you have 46.5 mm in backfocus on the camera house. https://en.wikipedia..._focal_distance Then your adapter should be 55-46.5=8.5 mm, but that only holds for a standar field flattener. It could be other backfocus distance and it also depends on your telescope.
What is back focus? What problems does it cause for …
- https://www.celestron.com/blogs/knowledgebase/what-is-back-focus-what-problems-does-it-cause-for-visual-and-photographic-use-of-my-scope-what-are-related-focus-issues
- Back focus is the distance from the end of your eyepiece drawtube to the focal plane of your telescope. It varies greatly depending on the type of telescope: Schmidt-Cassegrain telescopes (SCTs) typically have generous back focus distances of approximately 5 in. Similarly, Maksutov-Cassegrains (Maks) also have large back focus distances.
Focusing Methods - Astrophotography and Image …
- https://www.astropix.com/html/astrophotography/methods.html
- Take short exposures and zoom in on a star and examine with the LCD display on the back of the camera. Then you change the focus slightly and examine the image to see if the star looks smaller. Through a process of trial and error, you will eventually go through the point of best focus. When the star starts getting bigger you will realize this.
How to nail focus for DSLR astrophotography?
- https://photo.stackexchange.com/questions/23972/how-to-nail-focus-for-dslr-astrophotography
- Your camera will focus perfectly at infinity. Then set it to manual focus, and try not to bump the focus ring. The next best thing is a very distant light. Use a distant city light if you can, they are bright enough to focus, and far enough away to be infinite. If none of these works, then you can try a bright star, airplane, etc.
Calculating Back Focus/Metal Back Distance - Cloud Break Optics
- https://cloudbreakoptics.com/blogs/news/calculating-back-focus-metal-back-distance
- For this purpose, we often use "Metal Back Distance" and "Back Focus" interchangeably. Corrective optics are additional pieces of gear that help fix optical aberrations that are present in most telescope designs. For example, refractors suffer from field curvature, and so need field flatteners to correct for this.
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