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RASA 8 Questions and Answers

 Why can’t the Rowe-Ackermann Schmidt Astrograph (RASA) 8 be used visually?The optics produce an image at the front end of the telescope, not the back. Therefore, you cannot look through...

RASA 8 Questions and Answers

 Why can’t the Rowe-Ackermann Schmidt Astrograph (RASA) 8 be used visually?The optics produce an image at the front end of the telescope, not the back. Therefore, you cannot look through...

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...

What is a waterproof spotting scope?

Waterproof spotting scopes are designed to totally exclude water from the optical tube. They may be nitrogen purged: filled with dry, inert gas (nitrogen) as an additional barrier to the...

What is a waterproof spotting scope?

Waterproof spotting scopes are designed to totally exclude water from the optical tube. They may be nitrogen purged: filled with dry, inert gas (nitrogen) as an additional barrier to 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...