The NexStar Evolution 9.25 is great for both Solar System objects and deep-sky viewing thanks to the C9.25 optical tube’s large 9.25” aperture.
Mercury and Venus are essentially smooth crescent or gibbous orbs without detail due to the difficulty in observing any detail on Mercury and Venus’ cloud tops, though the C9.25 should have an easier time resolving Mercury than a smaller telescope might.
The Moon looks fantastic with any telescope, and the C9.25 has no trouble revealing details such as craters and mountain tops just a few miles across.
Mars is often too distant from us to resolve any detail, but on a clear and steady night when Mars is at its closest, the C9.25 can resolve its polar ice caps and a few dark markings.
Jupiter’s moons are easy to see at low magnification with the C9.25; high power reveals colorful cloud bands, the Great Red Spot, and the disks of its four largest moons if any are transiting in front of the planet – along with their shadows following close behind.
Saturn’s rings show the Cassini Division within them, along with the Encke gap under superb seeing conditions with the C9.25. The cloud belts on Saturn itself can also be seen along with a handful of moons.
Uranus is too small to resolve any details in its clouds, but the C9.25 should show its disk at high magnification along with possibly one or two faint moons accompanying it.
Neptune is so small and distant that distinguishing it from a star may be difficult, but its moon Triton is easy to see next to it with the C9.25.
Pluto can just barely be glimpsed under dark skies with the C9.25 if you are able to identify it between the myriad stars that it hides among.
What you can see with any telescope beyond bright objects like the Moon, planets, and double stars is affected by the severity of the light pollution in your area. Globular star clusters can usually be resolved under almost any conditions with the Evolution 9.25, and open star clusters look great (though large ones may not fit in the narrow field of view possible with the C9.25 optical tube thanks to its long 2350mm focal length). Galaxies and nebulae, however, look best under dark skies, where you’ll be able to see hundreds if not thousands of galaxies as well as resolve details like dust lanes within the brightest ones, and nebulae like the Orion Nebula or the Swan will look fantastic.