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Stefan i have been watching you try to sell that Celestron 80mm guidescope, as i have one in storage myself. I really bought it to get the ring set and DVR clamps that it comes with which individually are worth more than the scope. One possible use you could consider is narrowband imaging. I used to image with a Bresser achromat scope and it was a very cost effective capable narrowband scope. Narrowband will allow you to escape the CA issue. You will need to check focus for each filter, but once you register the subs, alignment will be fine. I used to run my NB subs through DSS, obviously one stack per filter, but then re-registering the output Tiffs for each filter to align them for final processing. Its doable, and since your in Melbourne, narrowband might get you more use than RGB.
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