Thread: [NOT REQUIRED] Looking for f/3-ish mirror
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Old 28-07-2023, 05:03 PM
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mental4astro (Alexander)
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Join Date: Jun 2008
Location: sydney, australia
Posts: 5,005
This is for a specialised visual instrument to hunt down Integrated Flux Nebulae. This is why I need some aperture but more so that fast focal ratio. A frac or camera lens is not going to do.

Alex.