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aandrei

14 Feb 2014 12:24


Ajutor de colimare

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Poate voi l-ati descoperit de mult.... totusi:
What does MetaGuide do?
Allows a high power view of a star and its diffraction pattern even when seeing is not ideal
Shows a "coma dot" over the live star that guides collimation so the user just centers the dot over the star. This takes the guesswork out of collimation while keeping it interactive and realtime
Compares the observed diffraction pattern with theory, including secondary obstruction effects
Provides a simple "dump" of the raw and steady images of the star, along with a plot that shows how the stellar profile compares to theory, plus numeric values for the actual and theoretical FWHM's. This provides an objective and quantitative measure of a telescopes true performance, with less dependence on good seeing
Measures flexure/mirror flop using two telescopes, two web-cams, and two instances of MetaGuide that link to each other
Automatically re-centers the telescope during collimation so you can concentrate on the collimation adjustments and not have to re-center manually after each change
Acts as an autoguider with seeing effects partially removed from the error, so the "chasing of the seeing" is directly reduced
Locks onto a user-specified error frequency and corrects for it proactively, acting like a new level of periodic error correction that does not rely on indexing and can work at higher frequencies
Calculates centroid based on live view of stars using a very different algorithm than simple "center of gravity." To reach fainter stars, the frames may be stacked first for the effect of long exposures
Provides graphical output and logs of drift and periodic error in your mount, including the "noise" that can be hard to remove with PEC (Periodic Error Correction).