How to Use an Apochromatic Refractor Telescope
Apochromatic telescopes are more expensive than reflecting telescopes, but they require less maintenance and are extremely portable.
- Difficulty:
- Moderate
Instructions
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1
Resolve to invest a fair bit of money in this telescope. You can easily spend $1,000 per inch of aperture on an apochromatic refractor - without the tripod.
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2
Accept that the lower-cost models have limited light-gathering power and suffer from chromatic aberration. Chromatic aberration is color fringing around the object you are viewing.
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3
Know that apochromatic telescopes use three or four lenses to eliminate chromatic aberration. This is the main reason they are so expensive.
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4
Enjoy the advantage of an apochromatic refractor, which is never having to say the word "collimate." This type of telescope comes pre-assembled from the factory with all of its optics aligned.
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5
Enjoy that this type of telescope requires little care and maintenance.
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6
Plot your subject with the use of star charts.
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7
Position your telescope for viewing.
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8
Aim the telescope at the sky and find your subject.
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9
Position your eye over the eyepiece and focus.
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