What are some resources and communities for amateur astronomers interested in astrometry?

Q: What does this mean, "parallax free from 30 yards?" · It means there is 0 parallax from 30 yards and beyond. Pretty good considering most optics are free at ... the effect by which the position of an object seems to change when it is looked at from different positions. Aug 9, 2015 ... Keep in mind, what you perceive to be the "crispest" target picture does not necessarily mean you are free of parallax. The only way to ensure ... Parallax error occurs when the shooter's eye is not aligned perfectly with the scope's center, causing the crosshairs to appear off-center. Feb 28, 2024 ... Parallax is applied in the stellar parallax method, which measures the distance of stars by the apparent positional shift of any nearby star against the ... Sep 3, 2014 ... ... is, I don't really understand what it is, what it's good for and whether (and how) I should be trying to get some. I mean, I understand t... Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight and is measured by the angle or ... Sep 27, 2021 ... The beginning point of an authentic spiritual journey is to cultivate confidence in our capacity to generate insight, compassion, transformation, and healing. Aug 27, 2024 ... The parallax setting (or fixed parallax distance) on your scope is basically the point at which the reticle is convergent with the image. The ... Apr 20, 2021 ... A simple definition of Parallax: a noticeable shift in reticle placement while looking through your scope at different angles.