Question

identifying advantages which are advantages of reflecting telescopes? check all that apply. there is no rainbow - like halo around the image. reflecting telescopes can be made very large. reflecting telescopes use only lenses, not mirrors. only the reflecting side of the primary mirror needs to be perfectly shaped and smooth. the eyepiece creates an image for the observer.

Explanation:

1. Reflecting telescopes don't suffer from chromatic aberration which causes rainbow - like halos, so the first option is correct.
2. They can be constructed to be very large, making the second option valid.
3. Reflecting telescopes use mirrors, not just lenses, so the third option is incorrect.
4. Only the reflecting side of the primary mirror needs to be precisely shaped and smooth, which is an advantage, making the fourth option correct.
5. The eyepiece is a feature of all telescopes, not a unique advantage of reflecting telescopes, so the fifth option is incorrect.

Answer:

A. There is no rainbow - like halo around the image.
B. Reflecting telescopes can be made very large.
D. Only the reflecting side of the primary mirror needs to be perfectly shaped and smooth.