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GSO or SkyWatcher
I'd lean towards a GSO scope for three reasons;
1) The entry level scope have a fine focuser sooner in GSO line up than SW line up,
2) GSO have "bob's nobs" which are toolless collimation screws - simply better at night full stop,
3) GSO uses BK7 glass which focuses on returning more light accepted by the eyeball, the other glass type just returns more light full stop which isn't necessarily better as it can interfere with your useable light waves - visually anyway.
For glass type refer to the military specs for mirror/lens design, they are very well documented for procurement proposes and explain the different glass types very well.
Steve
Last edited by mura_gadi; 13-01-2021 at 05:49 PM.
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