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Old May 30th 18, 10:23 AM posted to sci.astro.amateur
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Default Questar 5 specifications released, mounting specs later?

On Tuesday, May 29, 2018 at 10:35:06 PM UTC-6, RichA wrote:

Just like Brandons, some cameras had screw-mount lenses. Back in the 1960's...

For 35 mm cameras, screw mount was the standard, and the various bayonet mounts
were developed later to allow additional features and be quicker to change lenses.

For telescopes, a plain tube is the standard.

John Savard