Quote:
Originally Posted by Satchmo
One way to reduce need for baffling behind the secondary is to mount a baffle stop away from the bottom of the focuser towards the secondary.
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Mark, this is a great suggestion! I'll look into something with this. Could prove a stroke of genius.
As you mentioned yourself, under urban skies all open truss scopes have a distinct disadvantage with stray light entering the focuser. Under dark sky conditions things can change more to a balance compared to a solid tube. No baffling is even possible.
If you are considering a highly portable dob, this type of thing is something that has already been considered, and are happy to deal with & the various solutions. Otherwise no open truss scope would be in the running for consideration. All scopes are a compromise somewhere. It then falls upon the individual to decide what properties are most important for them.
Thanks for the suggestion
Edit: Adrian, yep, I'm leaving a few things up my sleeve
