I still need to build a proper base for it. Balancing it on a chair or some other thing is just no good. It needs to move smoothly. What you think you know, don't realize how pronounced it is until you're watching through a decent telescope, is that the cosmos are on the move!
doodlebugging · 3h ago
The author mentions that locating metric fasteners in bulk may be a problem.
When I need anything metric (automobiles use a lot of metric fasteners of various sizes) I order them from BelMetric.com [0].
You can order one or one hundred or one thousand and they assemble your order and get it out to you faster than any other provider of fasteners that I have used.
They have an excellent selection including specialty parts that might be useful for building telescopes.
Overall this looks like an interesting project that is not difficult to make. I may need to level my printer bed and see what happens.
omgJustTest · 5h ago
Does anyone know of a cool (cheap) way to get adaptive optics in one of these devices?
teamonkey · 5h ago
Adaptive optics and cheap don’t usually go together and I don’t know of any successful amateur attempts. In any case, Hadley’s appeal is that it’s cheap and 3d printed, it’s not a precision instrument that is limited by the atmosphere.
That said, assuming you’re doing planetary photography, you can do speckle imaging by using an astronomy camera to take lots of short-exposure frames and running them through software such as AutoStakkert!4
https://www.youtube.com/watch?v=NA076d-gsyY
Also wrote it up on my website, which has a link to the Hackaday article I wrote on it: https://miscdotgeek.com/3d-printing-the-hadley-114mm-newtoni...
I still need to build a proper base for it. Balancing it on a chair or some other thing is just no good. It needs to move smoothly. What you think you know, don't realize how pronounced it is until you're watching through a decent telescope, is that the cosmos are on the move!
When I need anything metric (automobiles use a lot of metric fasteners of various sizes) I order them from BelMetric.com [0].
You can order one or one hundred or one thousand and they assemble your order and get it out to you faster than any other provider of fasteners that I have used.
They have an excellent selection including specialty parts that might be useful for building telescopes.
https://belmetric.com/
They're the best.
Overall this looks like an interesting project that is not difficult to make. I may need to level my printer bed and see what happens.
That said, assuming you’re doing planetary photography, you can do speckle imaging by using an astronomy camera to take lots of short-exposure frames and running them through software such as AutoStakkert!4
https://en.wikipedia.org/wiki/Speckle_imaging