Collimating an SCT: the C14 magic
seeing Airy disk despite turbulence
A worm’s story (or star tracking on Titan mount)
Did you ever wonder how accurate was star tracking on your mount?Well, while imaging, I noticed that the autoguider tended to always correct in roughly the same direction even though I knew my polar alignment was near perfect. Strange…So, I finally decided to look into it (little did I know what can of worms, literally,…
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