Why does there appear to be a black circle in the middle of my image whe...

If you can see the shadow of the secondary mirror (black circle) and/or spider vanes while viewing through the eyepiece, the telescope is not focused. Turn the focusing knob until the...

Why does there appear to be a black circle in the middle of my image whe...

If you can see the shadow of the secondary mirror (black circle) and/or spider vanes while viewing through the eyepiece, the telescope is not focused. Turn the focusing knob until the...

Why is my NexStar SLT optical tube slipping in altitude?

If your altitude clutch is slipping and causing the optical tube to droop, the altitude nut will need to be tightened. Remove the optical tube and unscrew the tube clamp...

Why is my NexStar SLT optical tube slipping in altitude?

If your altitude clutch is slipping and causing the optical tube to droop, the altitude nut will need to be tightened. Remove the optical tube and unscrew the tube clamp...

Why is my Telescope Showing Everything Upside Down? Is There Something Wrong with it?

Why is my Telescope Showing Everything Upside Down? Is There Something W...

If your viewing target is upside down when you use your telescope, don’t be alarmed! Astronomical telescopes are designed to produce an upside-down or inverted image. There's no need to...

Why is my Telescope Showing Everything Upside Down? Is There Something W...

If your viewing target is upside down when you use your telescope, don’t be alarmed! Astronomical telescopes are designed to produce an upside-down or inverted image. There's no need to...

Why does my telescope rings have a missing screw?

The equatorial (EQ) PowerSeeker, AstroMaster, and most Omni XLT models come equipped with tube rings to easily mount the telescope and balance the tube. One of the rings is equipped...

Why does my telescope rings have a missing screw?

The equatorial (EQ) PowerSeeker, AstroMaster, and most Omni XLT models come equipped with tube rings to easily mount the telescope and balance the tube. One of the rings is equipped...

Why do I only see stars as points of light even when using my highest power eyepiece?

Why do I only see stars as points of light even when using my highest po...

The ability to see details on a celestial object ultimately depends on how far away it is, and how big it is. Stars are so very far away that they...

Why do I only see stars as points of light even when using my highest po...

The ability to see details on a celestial object ultimately depends on how far away it is, and how big it is. Stars are so very far away that they...

Benefits of a Bigger Aperture

The job of a telescope is to gather light and bring that light to the eyepiece or camera. The larger the telescope's aperture, the more light the telescope can gather...

Benefits of a Bigger Aperture

The job of a telescope is to gather light and bring that light to the eyepiece or camera. The larger the telescope's aperture, the more light the telescope can gather...