3x vs 2x barlow lens

[Astro-Nova]

For my telescope (see sig) I want a barlow

Is 3x better or will I get more quality out of the 2x?

[knobby]

if its anything like a camera convertor then the 2x would be better optically, but i'm no scope expert:confused:

[spaceboy]

If your not planetary imaging then go with the x2

[Astro-Nova]

both, planetary and DSO

[Whippy]

Personally, I think you'd get more use out of a 2x barlow. As the name implies, a 2x barlow effectively doubles the magnification of your eyepiece while a 3x trebles it. You might think that the higher the magnification, the better but it rarely works out like that.

The general rule of thumb is that on a perfect night, the maximum magnification you can achieve is double your aperture in millimetres, so in your case, that'd be x400, but on a normal night it'd be about x250. I'd work out what it is you actually want and take it from there.

HTH

Tony..