Prime time to see red
If you have a telescope, now is a great time to use it to study Mars. To see any details at all, you will need to use a high-power eyepiece. Even though Mars is close, because it is physically small, the planet’s disc is tiny. It appears 80 times smaller than that of the full moon when viewed from Earth.
At the moment, we are getting good views of the red planet’s southern hemisphere, so look out for the south polar cap and dark-grey markings on its rusty surface. A few weeks ago, I was able to photograph Mars from the University of Canterbury’s Mount John Observatory. Although the accompanying image was taken with a reasonably large observatory, it actually shows the kind of detail you can see with your eyes using a backyard telescope.
Mars rightly takes centre stage at the moment. However, if you are in the mood for a challenge, try to find Uranus. The seventh planet is in the constellation Aries. It is some 17 degrees away from Mars, just to the left of the distinct circle of stars, which marks the head of Cetus, the whale. While some people with excellent eyesight can see Uranus, most of us require binoculars to locate it. Look for a noticeably green “star”. Right now, the distance between Uranus and Earth is almost 3,000,000,000km.
During my last observing run at Mount John, I was able to photograph Uranus and four of its 27 moons. For reasons lost in the mists of time, are all named after characters from Shakespeare or Alexander Pope.
– Ian Griffin