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10 Top Telescope Questions
by Ed Ting

7. How come the objects in my telescope look so small/dim/featureless?

This question has many possible answers. Perhaps you’ve developed unrealistic expectations by looking at all the spectacular photos coming from professional observatories, the Hubble Space Telescope, and other sources. Sadly, you just can’t see this kind of detail and color in a backyard telescope. If you’re looking at “deep-sky” objects like galaxies or nebulas, most often you’ll see a faint haze or smudge against a black background. A bigger scope will improve the view of faint targets — but you still won’t see bright colors.

Colorful Orion Nebula
Left: We're accustomed to beautiful color images of the Orion Nebula (M42). But most deep-sky objects manifest themselves in shades of gray at the eyepiece (right).
Through a backyard telescope Saturn or Jupiter will look no bigger than a bright dime in the middle of a black dinner plate. If your views of the planets don’t have the detail you expect, you could be falling victim to a number of ills. The usual culprits are an unsteady atmosphere, a telescope that hasn’t had enough time to cool down to the outside air temperature, or optics that aren’t big enough or good enough to deliver the kinds of features you’re hoping to see. And it could be a combination of all three!

Keep in mind that “seeing” while at the eyepiece is an art as well as a skill. The more you observe, the more you’ll see.



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