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Astrophotography with DSLR - focussing problems.
- https://stargazerslounge.com/topic/24134-astrophotography-with-dslr-focussing-problems/#:~:text=%20Astrophotography%20with%20DSLR%20-%20focussing%20problems.%20,clip%20filter%20for%20the%20canon%20http%3A%2F%2Fstargazerslounge.%20More%20
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Astrophotography Focusing: How to get Sharp Stars - Stellar …
- https://stellardiscovery.com/astrophotography-focusing/
- Most of the time, focusing in astrophotography is a manual process that requires you to adjust the focus by hand. This process typically involves adjusting a focusing ring or a focusing knob. Both DSLR lenses and telescopes are commonly used for astrophotography, so I will run through some of the features and differences you will likely encounter.
How to Focus your Camera For Astrophotography
- https://astrobackyard.com/how-to-focus-astrophotography/
- If your focus becomes worse over time, you should see the scores gradually drop. This usually indicates that a change in temperature affected …
Astrophotography Focus Issue
- https://ap.community.sony.com/s/question/0D50B00004ILCGTSA5/astrophotography-focus-issue?language=en_US
- Astrophotography Focus Issue. Hello I have the NEX 6 (with the SEL 50mm F1.8 lens) and enjoy it for the most part. ... Hello again FrancisG. Your advice has helped me (so far) to eliminate other possible focus problems. The issue still remauns, and I believe it may be caused by the mechanical shutter vibration. I took some images of stars, and ...
Astrophotography - Unable to achieve focus with current …
- https://astronomy.stackexchange.com/questions/11709/astrophotography-unable-to-achieve-focus-with-current-setup
- I have a Panasonic G1, used with the adapter mentioned above. I only need 25 mm of back focus for this to work, which is an extremely small value. Use a barlow. A barlow would increase the amount of back focus available. Try and see what happens. Keep in mind it cannot work miracles - if you need a very large amount of back focus, it may not work.
Astrophotography with DSLR - focussing problems.
- https://stargazerslounge.com/topic/24134-astrophotography-with-dslr-focussing-problems/
- Astrophotography with DSLR - focussing problems. 1. A low profile focuser - FLO does some nice ones. 2. An internal filter (fits inside the camera), here a link to a CLS clip filter for the canon http://stargazerslounge.
focusing problems - Equipment (No astrophotography) - Cloudy …
- https://www.cloudynights.com/topic/1718-focusing-problems/
- focusing problems - posted in Equipment (No astrophotography): Hello world! Two months ago I got my first telescope: an 8 Skywatcher reflector.My experience from the telescope world is quite small, so maybe its just my imagination. The problem is that I cant focus precisely enough. The scope is f/5, which makes focusing already difficult, but I believe the problem is …
Focusing Methods - Astrophotography and Image …
- https://www.astropix.com/html/astrophotography/methods.html
- There are several problems with using a Hartmann mask to focus: The viewfinder of the camera may be at an uncomfortable angle when the scope is pointed overhead with a refractor, SCT,... As the images merge as you get close to focus, the exact …
Focusing Problems - Equipment (No astrophotography) - Cloudy …
- https://www.cloudynights.com/topic/728651-focusing-problems/
- Focusing Problems - posted in Equipment (No astrophotography): Hi, I recently purchased a Celestron EdgeHD 11” telescope along with a PegasusAstro Motor Focus Kit SCT V.2 Celestron - C11 and a PegasusAstro Dual Motor Focus Controller. Whenever I focus, whether I try an autofocus using software or manually using the focus hand controller, the stars that are …
Focusing Techniques For EAA & Astrophotography
- https://www.californiaskys.com/blog/focusing-techniques
- Our eyes can adjust to slight focus offsets or changes in focus with temperature without much difficulty. But for astrophotography or EAA the Critical Focus Zone (CFZ), or distance over which focus is limited by seeing, tube currents, diffraction, can be a fraction of a mm and a camera cannot adjust for deviations from this like the human eye.
Optical aberrations: how to fix errors in your telescope
- https://www.skyatnightmagazine.com/advice/understanding-optical-aberrations/
- Field curvature can be corrected by the use of an external field flattener, available in two designs, one that flattens only and a second type that also reduces the apparent focal length. These are very popular with refractor users. Coma can …
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