Jupiter Shadow Transit and Magnification

Thinking about getting into planetary observing a bit with my XT10. What is the minimum maginification once should use to see shadow transits on Jupiter?

Here is my problem.

My scope takes a while to cool down, so I cant really bump the mag up because it is not sharp enough until it really cools down. And I don't have a lot of time to step outside. Given the short observation time I have, I would like to know if a magnification of around 120x would be sufficient to viewing the shadow transits? Images are sharp upto this magnification and I have to leave scope out much longer for using more magnification (which is a problem for me).

Planetary Observers, what are your thoughts?

Hi Srinivas,

With a 10" at 120x, you should have no problem seeing shadow transits on Jupiter. The shadows should look like small black dots on Jupiter's face.

Sol Robbins

Hello there Srinivas,

It depends on the quality of optics and if it's cooled
down sufficiently enough. But I've seen the shadow transit
looking like a black pin pricked microscopic point at 72x (12mm Radian) through my 4" TV-102 APO.

Ron B[ee]
PS - Perhaps, a small, quick cooling, at-a-moment deploying
refractor is in your kharma ;-)? I've found my 4" refractor suiting my on-a-whim, busy, body-disbuilding :-( lifestyle perfectly. I'm also getting a larger aperture for when those great nights arrive.