Jamie,
I am imaging with the bespoke Parallax/AT130mm f/6 apo primarily but also have a Stellarvue SV80ST25-SV I use for the wide stuff. For these scopes the piggybacked 50mm guidescope setup works great and I see no reason to use anything else. But I am curious to see if the OAG changes anything.?
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For the last several years I have been working towards imaging with a scope I pulled out of the dumpster after I resurrected and slightly modified it - a deforked LX200 M10" f/6.3 SCT OTA. I hope to use it at three different focal lengths, 1,600mm @ f/6.3, 1,008mm @ f/4 and 640mm @ f/2.5 using Starizona reducer/flatteners. I have an ASI183MM-Pro and think it might make a really good system, it is a big enough light bucket and it can be made to work very fast. It is limited to small cameras but is a lot more flexible, a lot cheaper than a RASA and visual capable. The next step is to test the SCT II/III .63x reducer coma corrector and see if I need to make one last modification and lock the mirror down on the baffle tube and realign the optics. I have a 2.5" Moonlite focuser I think will work but it may put the reducer too far out of the baffle to work well, have to test it and see. I think the saving grace is that the small 1" format chip will avoid vignetting and any optical weirdness of having the SCT II/III reducer further back than usual. So much to do!?
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Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astropheric Weather Forecast - South Pasadena, CA?
Chip Louie