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Thats some serious Focal Ratio Eddie. I'm impressed.
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Thanks! The Intes is well capable of it. If only my skies were regularly as good.
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What does this mean please?
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Originally Posted by EddieT
Pixel scale was 0.4 arcseconds
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Each pixel in the image covers 0.4 arcseconds of sky, so that is theoretically the smallest resolvable point, but generally speaking most skies aren't good enough for sub-arcsecond resolution anyway.
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You would have been using a good mount for that F-Ratio to. What mount were you using Ed?
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I have a Losmandy G11 and the image was self-guided on-axis by the ST10. Accurate guiding is half the battle. The other half is having a mount capable of guiding accurately
Losmandy introduced high-precision worms for their mounts a couple of years back and it made a huge difference to the ability of these mounts to track smoothly at long focal lengths.