What is the minimum pulse length required by the autoguiding ports on Ce...

You should use pulses not less than 10 milliseconds (ms) in length. The autoguider port is polled approximately once per ms by the mount electronics. (The exact rate depends on...

What is the minimum pulse length required by the autoguiding ports on Ce...

You should use pulses not less than 10 milliseconds (ms) in length. The autoguider port is polled approximately once per ms by the mount electronics. (The exact rate depends on...

What are the sizes of collimation screws on Current-production Celestron...

When you need to replace your collimation screws, please use the below for a refence of which screws to use: Schmidt-Cassegrain Optical Tubes:Optical SizeThread SpecificationsLengthC5M3 x 0.510mmC6...

What are the sizes of collimation screws on Current-production Celestron...

When you need to replace your collimation screws, please use the below for a refence of which screws to use: Schmidt-Cassegrain Optical Tubes:Optical SizeThread SpecificationsLengthC5M3 x 0.510mmC6...

Is there vignetting with the EdgeHD optics and reducers on a full-frame ...

A full-frame image sensor is based on the size of 35 mm film and therefore has a 42 mm diagonal. This corresponds to a 21 mm radius circle at the...

Is there vignetting with the EdgeHD optics and reducers on a full-frame ...

A full-frame image sensor is based on the size of 35 mm film and therefore has a 42 mm diagonal. This corresponds to a 21 mm radius circle at the...

What is the field of view on my Celestron optical microscope?

Celestron Optical Microscope Field of View ChartThe field of view (FOV) is given for the microscopes at each power. If the FOV is less than 1 mm, then the size...

What is the field of view on my Celestron optical microscope?

Celestron Optical Microscope Field of View ChartThe field of view (FOV) is given for the microscopes at each power. If the FOV is less than 1 mm, then the size...

Why is the Sky Tour button on my hand control not working when I want to...

The SkyProdigy manual says to use the scroll buttons to select Best of Tonight. Unfortunately the manual has an error.Here's how it works: once you press the Sky Tour button,...

Why is the Sky Tour button on my hand control not working when I want to...

The SkyProdigy manual says to use the scroll buttons to select Best of Tonight. Unfortunately the manual has an error.Here's how it works: once you press the Sky Tour button,...

How big is the Pentaview microscope’s #44348 CCD sensor?

The sensor is a 1/2.5 (4:3) inch 5 MP CMOS chip.Updated 12/17/13

How big is the Pentaview microscope’s #44348 CCD sensor?

The sensor is a 1/2.5 (4:3) inch 5 MP CMOS chip.Updated 12/17/13