A certain telescope always generates fuzzy halos or circles around the image of the bright star. When it consists of high quality lenses, what is probably wrong with the choice of the telescope?
i) It is too short.
ii) Its diameter is too small.
iii) It is vibrating.
iv) We are looking via the wrong end of the telescope
v) There is nothing wrong. The halos are portion of the star. They encompass nothing to do with the telescope.