Something of an update....
I'm still working on my multi-telescope project slowly, collecting bits and getting closer...
3 x 400mm f/2.8 Nikkor Lenses
4 x 600mm f/4 Nikkor Lenses
Dual saddle Losmandy D rail (need to grow it to triple size)
2 x 1600mm Mono cameras (eventually I'd like 3 x APSc)
1 x ZWO/Nikon Lens adaptor to test V custom
Nikon FF DSLRs
Various Nikon Teleconverters for more reach
Nikon Filter Holders (for modification to suit 36mm unmounted and 48mm filters housed within the Nikkor 600mm and 400mm lenses)
But the greater impediment is no permanent setup possibilities at present and my mount, an NEQ6 which can only carry 20kg max (better way less of course). When there are fewer pressing things to do, I will hopefully address those challenges.
Best
JA