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Star trackers and tracking accuracy: Astrophotography Talk Foru…
- https://www.dpreview.com/forums/thread/3465945#:~:text=Even%20good%20astronomical%20mounts%20usually%20have%20%2B%2F-%2015-20,just%20to%20give%20an%20idea%20of%20the%20error.
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Astrophotography Tracking Problem - Stargazers Lounge
- https://stargazerslounge.com/topic/369849-astrophotography-tracking-problem/
- Astrophotography Tracking Problem. williamoptics. william optics. ioptron. tracking. tracking problem. By deanchapman2705, January 10, 2021 in Discussions - Scopes / Whole setups. William Optics Zenithstar 61 II (360mm F6.1) - …
K3's Astrophotography - Mount Errors
- http://www.pk3.org/Astro/astrophoto_mount_errors.htm
- As mount's shaft rotates, any error in its surface and shape and also in worm and worm gear surfaces and shapes causes a periodic bump in tracking. The most observable is so called periodic error of the mount which is …
Acceptable Tracking Error - Beginning Deep Sky Imaging - Cloudy …
- https://www.cloudynights.com/topic/526261-acceptable-tracking-error/
- The peak error plays a role as well, and it's role gets bigger within a certain range of exposure times. With short exposures, maybe up to two minutes, guiding/tracking error matters less. As most NB imagers could tell you, with long exposures (i.e. maybe 8-10 minutes and longer) peak error matters less as well, as momentary aberrant movements end up getting absorbed …
Which Star Tracker is Best for Astrophotography? (In 2022)
- https://astrobackyard.com/star-tracker-astrophotography/
- Tracking is the act of matching the rotation of the Earth using an RA (right ascension) motor, with the axis of the mount aligned with the …
Astrophotography Tracking Mounts – Professor …
- http://www.ianmorison.com/three-astrophotography-tracking-mounts/
- However, even without guiding it is capable of making exposures of up to 5 minutes with a typical tracking error of +/- 5 arc seconds (assuming accurate polar alignment). This accuracy is due to the fact that the drive, resulting from …
Astrophotography with a Star Tracker in 2022 – Full Guide
- https://capturetheatlas.com/star-tracker-photography/
- 2. Place your EQ wedge or ball head on the tripod. 3. Slide the tracker on the ball head or equatorial wedge. Mount your tracker on top of your ball head or EQ base and make sure that it’s fixed with no shakiness. When you mount the star tracker on the ball head or EQ wedge, don’t mess up the level.
Star trackers and tracking accuracy: Astrophotography …
- https://www.dpreview.com/forums/thread/3465945
- Star trackers and tracking accuracy. Apr 5, 2013. Star trackers do initially have some tracking errors built in (it is hellish difficult to make a compact tracker that do not show a certain amount of periodic error). Even good astronomical mounts usually have +/- 15-20 arcsecond tracking error, and excellent mounts have +/- 5 arcseconds or less. The diameter of …
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 …
Problem with elongated stars - Imaging - Stargazers Lounge
- https://stargazerslounge.com/topic/230271-problem-with-elongated-stars/
- Posted May 23, 2015. Hi. The problem with the elongated stars still continues. The images of M13 are captured with Vixen VC200L operating at 1280 mm and SBIG ST2000xm. The autoguiding is done through the ST-237 guide chip of SBIG ST2000XM. The above setup is loaded on Skywatcher HEQ5 mount.
Astrophotography Mistakes - Dan Lessmann.com
- http://www.danlessmann.com/articles/AstroMistakes.htm
- The biggest problem with astrophotography is that there are way too many ways to make mistakes as we go along and those mistakes are rarely inexpensive. Lately the manufacturers don't help much with their advertising. If you look at just about any manufacturer's ad, you'll see that astrophotography is about as simple as shooting pics of Fluffy ...
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