Decrease image size for webcam

[Astromaster130]

Hey fellow stargazers,

Is there something I can use to make the image smaller when using prime focus with a webcam on my scope?

I want to be able to get the whole moon with my webcam if possible! Is there something like using a barlow without the lens stacked onto a barlow with lens and webcam on top?

Thanks for any help ✨

[michael.h.f.wilkinson]

Some people use focal reducers to get the whole disk on the chip. Much depends on the scope and the webcam itself. As an alternative, it is possible to create a mosaic. Free programs like AutoStitch and MS-ICE make that quite straightforward

[lukebl]

You might be able to make the image smaller with a focus reducer as suggested, but you would end up with a very low-resolution and 'pixelly' image if the sensor is, say, 480 x 640 pixels. Better to do a mosaic.

[Astromaster130]

Ok thanks guys, I will look into it ✨

[Ant]

Imerge is also another good stitching software.

The big problem with a focal reducer is that it moves the focus point in and a lot of scopes don't have enough in focus (mainly an issue with reflectors).

Cheers

Ant

[Earl]

I found the best way to get the whole moon on one image is with a DSLR, with a 4se for example and 450d it gives a nice large moon.

[Unklefunk]

I found the best way to get the whole moon on one image is with a DSLR, with a 4se for example and 450d it gives a nice large moon.

Exactly the setup ive been using, a nexstar 4se and a canon eos...posted some lunar pics I took with it last night  in the lunar section this morning