Whats the difference between eye piece projection & prime focus

[Taff]

Hi' can some one explain to me what is the difference between eye piece projection' and prime focus' while useing a webcam Thanks.Taff

[Ant]

Prime focus places the webcam chip at the focus point of the telescope. There is only the telelscope and webcam in the optical path.

Eyepeice projection add's a eyepeice into the optical path and the magnified image from the EP is projected onto the chip. The futher the distance between EP and chip increases the image scale.

Cheers

Ant

[Taff]

Thanks Ant' for the quick reply and info.Taff