I would like a telescope I can use with my Canon EOS 7D DSLR and laptop. I’m looking for longevity rather than low cost, perhaps something upgradable. Any suggestions?
Steve says: “A good quality imaging telescope requires a good quality mount to support it and if you want this to be a one-time-only purchase then you should aim for a heavy-duty mount with excellent tracking abilities for future proofing.
For longevity and reliability, it is difficult to beat a good refractor as they don’t require collimation.
The Sky-Watcher Esprit 150 ED Pro or the Tec 140 with a suitable field fattener would be excellent choices but you could also consider the Takahashi FSQ-106ED which doesn’t require a field fattener because of its modified Petzval design.
Upgrades would include focusers although a more suitable cooled camera should be high on your shortlist.
Email Steve your astronomy queries to firstname.lastname@example.org and they could be answered in a future issue of BBC Sky at Night Magazine.