What is seeing? What is transparency of the atmosphere?

"Seeing" is the term astronomers use to describe the sky's atmospheric steadiness. Transparency is used to describe atmospheric clarity.The atmosphere is in continual motion with chan...

What is seeing? What is transparency of the atmosphere?

"Seeing" is the term astronomers use to describe the sky's atmospheric steadiness. Transparency is used to describe atmospheric clarity.The atmosphere is in continual motion with changing temperatu...

What is collimation?

Collimation is the proper alignment of the optical elements in a telescope, which is critical for achieving optimum results. Poor collimation will result in optical aberrations and distorted images...

What is collimation?

Collimation is the proper alignment of the optical elements in a telescope, which is critical for achieving optimum results. Poor collimation will result in optical aberrations and distorted images...

Other Polar alignment tips.

You can use your finderscope (finder) to accurately polar-align your equatorial mount. This is more accurate than a rough alignment using the mechanical scales on your mount or roughly pointing...

Other Polar alignment tips.

You can use your finderscope (finder) to accurately polar-align your equatorial mount. This is more accurate than a rough alignment using the mechanical scales on your mount or roughly pointing...

What Are Setting Circles? (And How to Use Them on an Equatorial Mount)

What Are Setting Circles? (And How to Use Them on an Equatorial Mount)

Setting circles are a classic, hands-on way to find objects in the night sky using celestial coordinates. Instead of tapping a screen or relying on GoTo electronics, you locate objects...

What Are Setting Circles? (And How to Use Them on an Equatorial Mount)

Setting circles are a classic, hands-on way to find objects in the night sky using celestial coordinates. Instead of tapping a screen or relying on GoTo electronics, you locate objects...

How far can I see with a telescope?

The farthest you can see in the sky with your telescope will depend on its ability to gather light and where you observe.The most distant objects visible with amateur-sized telescopes...

How far can I see with a telescope?

The farthest you can see in the sky with your telescope will depend on its ability to gather light and where you observe.The most distant objects visible with amateur-sized telescopes...