Hi
I've almost got all the pieces for a dual rig apart from a 2nd scope. I've been holding out for an esprit 80 but they're very rare on the 2nd hand market which has got me thinking of other potential scopes for the job.
My main imaging scope is a William optics flt98 carbon fiber OTA with 0.8 flattener, sx filter wheel, astrodon filters and a qhy183mm. I have a ASI zwo 183mm and zwo mini filter wheel which will be connected to my 2nd scope mounted on a skywatcher guide scope mount for alignment which is why I need a smaller slave scope, hence thinking of the esprit 80.
I've been wanting a triplet to reduce CA but then I thought, is CA mainly due to blue bloating? Could I get a doublet but keep the blue filter in my flt98 and almost eliminate the ca that way?
Another question I have is does glass matter? I know FPL-53 glass is superior to FPL-51 but does it matter as I'm only collecting colour data and all the detail will be collected with my main scope?
Is there anything else I should be thinking of? Or maybe suggestions of potential scopes?