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Observing Uranus through a telescope

Uranus is the seventh planet from the Sun. It is a gaseous cyan-coloured ice giant.

What Uranus is

Uranus is the seventh planet from the Sun. It is a gaseous cyan-coloured ice giant. Most of the planet is made of water, ammonia, and methane in a supercritical phase of matter, which astronomy calls "ice" or volatiles. The planet's atmosphere has a complex layered cloud structure and has the lowest minimum temperature of all the Solar System's planets. It has a marked axial tilt of 82.23° with a retrograde rotation period of 17 hours and 14 minutes. This means that in an 84-Earth-year orbital period around the Sun, its poles get around 42 years of continuous sunlight, followed by 42 years of continuous darkness.

Observing Uranus through a telescope

Uranus is just at the edge of naked-eye visibility and shows as a small pale green disc in a telescope at higher magnification. It has no easy surface detail but is satisfying to track down.

Planets and the Moon reward higher magnification than deep-sky objects, but only up to what the air will allow: on a turbulent night the image boils and less power shows more. Magnification is your telescope's focal length divided by your eyepiece's focal length, so a shorter eyepiece gives more power. Use the Fit My Telescope tool to see the magnification and exit pupil each of your eyepieces gives before you observe.

Uranus in NASA imagery

NASA has imaged Uranus in detail. One example in the NASA Image and Video Library is titled GIF of Uranus' Magnetic Field, from JPL. NASA imagery is in the public domain.

Related

Sources: Uranus (Wikipedia, CC BY-SA) · Wikidata (CC0) · NASA Image and Video Library: PIA23683 (public domain)