will I focus with a 4x Barlow?

[Johnny Hormone]

Really as it says above... I have this Skywatcher 130PM (f5) reflector, and I am liking the idea of having a go at imaging with a Philips SC900 webcam...

I have read on here that ideally I need to use a Barlow to achieve f20, and hence a 4x, but am wondering if this is going to be possible to achieve a focus with as it seems a bit "strong"... that said I am a noobie so know nothing

All information most welcome,

Many thanks

Johnny

[geppetto]

Too much Johnny

I use my 130P with toucam only, at prime focus most of the time

and if the seeing is good, I use a *2 barlow.

Any higher than that would make things worse not better

[Johnny Hormone]

Many thanks for that information, a great answer as it points to "free"

[geppetto]

If you get the chance Johnny get your feet wet

by Toucaming the moon at prime focus.

You'll be impressed at the magnification level 8)