5
votes
2answers
70 views

Could many widely separated space telescopes be combined for VLBI on IR/visible wavelengths?

I have read about ground-based Very Long Baseline Interferometry telescope arrays able to achieve huge resolution at IR/visible wavelengths. There are also space-ground VLBI configurations in ...
6
votes
3answers
557 views

Is it possible to make a hydrogen-alpha solar scope?

Is the construction of an etalon / Fabry-PĂ©rot interferometer within the reach of amateur telescope makers? Are there any resources pointing to such projects?