Question 1

This is the area on the retina of concentrated focus:&#10;A) rods&#10;B) fovea&#10;C) cones&#10;D) averted vision

Accepted Answer

The fovea is the area on the retina of concentrated focus.

Question 2

New refractors can get rid of chromatic aberration by using ______ objectives.&#10;A) chromatic&#10;B) apochromatic&#10;C) reflector&#10;D) corrector

Accepted Answer

Apochromatic objectives are designed to minimize or eliminate chromatic aberration, which is the failure of a lens to focus all colors to the same convergence point. They achieve this by using special lens materials and advanced optical designs.

Question 3

The color sensitivity of your eyes changes under different lighting conditions. In dim light, your eyes are most sensitive to&#10;A) yellow-green&#10;B) violet-blue&#10;C) blue-green&#10;D) yellow-red

Accepted Answer

blue-green&#10;

Question 4

Taking this helps you see at your best: ____________.

Accepted Answer

The answer of Taking this helps you see at your...

Question 5

When your eyes can see in the dark it is called ______.

Accepted Answer

The answer of When your eyes can see in the...

Question 6

The equatorial mount is more complicated and more expensive than the alt-azimuth mount.

Accepted Answer

The equatorial mount is more complicated because it is designed to follow the celestial object's apparent motion across the sky with just one axis aligned with the Earth's axis of rotation, making it more complex and typically more expensive than the simpler alt-azimuth mount, which moves independently in altitude and azimuth directions.

Question 7

Averted vision uses cones more than rods on your retina.

Accepted Answer

Averted vision primarily uses the rods in your retina, which are more sensitive to light than cones, but do not perceive color, making it a technique useful for observing faint objects in low light conditions.

Deck 33: Amateur Astronomy