How to locate Andromeda in the night sky

Look for Cassiopeia first, then star-hop from its W shape toward a faint smudge: that’s the Andromeda Galaxy. It’s easiest on a dark, moonless night, and binoculars make it much easier to spot.

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Quick Scoop

Andromeda is usually found by using either Cassiopeia or the Great Square of Pegasus as your guide. Cassiopeia’s W-shaped pattern is the simplest starting point for most observers in the northern hemisphere.

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Best way to find it

  1. Face the northeast sky and find Cassiopeia’s bright W shape.
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  2. Use the deeper notch in the W as an arrow pointing toward Andromeda.
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  3. Move about three W-heights in that direction, and look for a faint, fuzzy patch.
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  4. If you miss it with your eyes, sweep slowly with binoculars.
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Second route

You can also start from the Great Square of Pegasus. From the square, follow the chain of stars through Alpheratz and Mirach, then continue toward the dim stars of Andromeda until you reach the galaxy’s position.

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What it looks like

  • With the naked eye, it appears as a very faint haze under dark skies.
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  • With binoculars, it looks more like a small cloud than a sharp object.
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  • Dark skies matter more than magnification for this target.
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Best conditions

Try when the sky is darkest, away from city lights and moonlight. Recent sky guides note that autumn and early winter are especially good viewing periods in the northern hemisphere, though it can be seen much of the year.

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Simple sky clue

If you can find Cassiopeia, you are already close. If you can find the Great Square of Pegasus, you have another reliable path to Andromeda.

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TL;DR: Find Cassiopeia’s W, follow the arrow-like notch toward a faint haze, and use binoculars under a dark sky for the easiest view.

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