SkyWatcher EXP 130 - 650 vs 900?

[dave1978]

Pricing up these on Ebay, so what difference will the focal length give?

[beamer3.6m]

Longer focal length = higher magnification so better for planets/lunar.

Lower focal length = faster scope so better for DSO's.

I also think the 650 is a parabolic mirror which is better than flat.

I have the 650 and it is great, even on the moon and planets.

[dave1978]

Well im after a 130/150mm for deep sky so the 650 would be ideal.

[beamer3.6m]

The 130pm is a great scope as it tracks the sky also - NOT GOTO though.

You can pick them up for next to nothing on here.

[TheThing]

Seconded! 130pm is a cracking :whip2: scope.

[dave1978]

Im the worst person i know for making a final decision! strange that the 900mm focal doesnt have the parabolic mirror!

so now to decide on 130 or 150mm primary mirror!

[beamer3.6m]

I think the mount is more important so I would spend out on the scope which comes with the best mount as the difference between the two in terms of mm is not much.

[Darren B]

I thought both have EQ2 mounts though the 130PM does come with an electric motor.