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Telescopes.pk

Planet

Mars

A small planet that shows detail only for a few months around its close approaches to Earth, which come about every 26 months.

When to look: A few months either side of opposition, roughly every 26 months.

What it looks like

Described as seen by eye at the eyepiece, on a clear night. Photographs collect light for minutes or hours and show far more colour and detail.

With the naked eye
An orange-red point of light, very bright near a close approach.
Small telescope (60-90 mm)
A small orange disc. Near a close approach, a white polar cap and dark surface markings may be glimpsed.
Medium telescope (114-150 mm)
Dark markings such as Syrtis Major and the polar cap near a close approach, on steady nights.
Large telescope (200 mm and up)
More surface markings and occasional clouds near a close approach. Far from one, Mars is a tiny disc in any telescope.

City or dark sky

From a city

City lights do not matter; steady air does.

From a dark site

No real advantage for Mars.

Observing tip: Plan around close approaches. At other times, even large telescopes show little more than a small orange disc.

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