Popular Articles

How to Determine Which Eyepieces to Use with Your Telescope
SCT & EdgeHD Collimation Guide
Aligning Your Celestron Finderscope: A Step-by-Step Guide
Why is my Telescope Showing Everything Upside Down? Is There Something Wrong with it?
Which scope aperture is best for different kinds of objects?

My image shifts when I’m focusing my SCT and after I get a great focus, ...

All Celestron SCTs and some Maks adjust focus by sliding the primary mirror along a set of nesting baffles inside the main tube. This is done by an arm to...

My image shifts when I’m focusing my SCT and after I get a great focus, ...

All Celestron SCTs and some Maks adjust focus by sliding the primary mirror along a set of nesting baffles inside the main tube. This is done by an arm to...

Why won’t my erect image eyepiece or diagonal always give right side up ...

Image erectors won’t work in all circumstances. The orientation of the image produced by your scope depends on its optical design and its orientation. Though optics of many scopes create...

Why won’t my erect image eyepiece or diagonal always give right side up ...

Image erectors won’t work in all circumstances. The orientation of the image produced by your scope depends on its optical design and its orientation. Though optics of many scopes create...

I need to box up my scope and ship it. What’s the best way to pack it?

Here is a summary of rules experts recommend for safe shipping of fragile optics and electronic equipment. Pack your item to survive a fall of 10 feet, not just to...

I need to box up my scope and ship it. What’s the best way to pack it?

Here is a summary of rules experts recommend for safe shipping of fragile optics and electronic equipment. Pack your item to survive a fall of 10 feet, not just to...

I want to use a 4 GB secure digital card with my VistaPix and/or IS70. W...

Probably not, as most larger-size SD cards are actually SDHC types and are not compatible with the VistaPix series.The VistaPix and the VistaPix IS70, use the SD card as external...

I want to use a 4 GB secure digital card with my VistaPix and/or IS70. W...

Probably not, as most larger-size SD cards are actually SDHC types and are not compatible with the VistaPix series.The VistaPix and the VistaPix IS70, use the SD card as external...

My CGEM mount won’t let the front latitude screw lock the mount. What’s ...

If you are using the mount at 35 degrees latitude and the front latitude screw won’t lock, this is normal for the CGEM. Here’s why.The CGEM has two latitude adjustment...

My CGEM mount won’t let the front latitude screw lock the mount. What’s ...

If you are using the mount at 35 degrees latitude and the front latitude screw won’t lock, this is normal for the CGEM. Here’s why.The CGEM has two latitude adjustment...

I upgraded/ re-flashed my Nexstar* hand control and now I’m not getting ...

You probably flashed it with the wrong version of firmware or one for another mount. When you do this, you may get the telescope model displayed correctly when your scope...

I upgraded/ re-flashed my Nexstar* hand control and now I’m not getting ...

You probably flashed it with the wrong version of firmware or one for another mount. When you do this, you may get the telescope model displayed correctly when your scope...