How do I determine the field of view for my CCD chip and telescope?

In order to be able to determine the field of view of your imaging device, you will need to find out two things:1. The size of the sensor of the...

How do I determine the field of view for my CCD chip and telescope?

In order to be able to determine the field of view of your imaging device, you will need to find out two things:1. The size of the sensor of the...

Does the Advanced VX mount (#91519) use bearings in the Dec axis?

The Advanced VX mount uses a bearing surface that the Dec axis slides on, but it does not use roller or ball bearings. Roller bearings are not needed on the...

Does the Advanced VX mount (#91519) use bearings in the Dec axis?

The Advanced VX mount uses a bearing surface that the Dec axis slides on, but it does not use roller or ball bearings. Roller bearings are not needed on the...

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...

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,...