Magnification using camera

[ianfiat]

Hi

When using a telescope with an eyepiece the magnification is focal length divided by eyepiece focal length- however when using a camera there is no eyepiece, so what is the magnification?

So for example I have a 750mm 150P telescope, what magnification will I have with a DSLR when using a 2X Barlow?

[Cornelius Varley]

Thre is no magnification as such with a camera, the field of view will be similar to a 1500mm telephoto lens. You can use this field of view calculator to compare different camera/telescop combinations.

[Auntystatic]

don't use a barlow with a dslr, use a normal camera teleconverter they are much better quality