Popular Articles

How to Determine Which Eyepieces to Use with Your Telescope
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Which scope aperture is best for different kinds of objects?

How do I measure distances and sizes of ships, etc. with the Oceana mono...

On the Oceana Monocular (#71212), the vertical and horizontal scales on the reticle are graduated in mils (short for milliradians). One mil is a thousandth of the angular measure known...

How do I measure distances and sizes of ships, etc. with the Oceana mono...

On the Oceana Monocular (#71212), the vertical and horizontal scales on the reticle are graduated in mils (short for milliradians). One mil is a thousandth of the angular measure known...

What it is magnitude and meaning of cone error readings given by Celestr...

In the hand control menu under Scope Setup, Mount Settings, your Celestron GoTo German equatorial mount displays Cone Value, which is set when one or more calibration stars are added...

What it is magnitude and meaning of cone error readings given by Celestr...

In the hand control menu under Scope Setup, Mount Settings, your Celestron GoTo German equatorial mount displays Cone Value, which is set when one or more calibration stars are added...

What battery type is used in the CGE mount for the real-time clock (RTC)?

This mount uses the CR2032 3-volt lithium battery for the RTC.Updated 12/3/13

What battery type is used in the CGE mount for the real-time clock (RTC)?

This mount uses the CR2032 3-volt lithium battery for the RTC.Updated 12/3/13

Does the Advanced Stereo Microscope (#44202) use standard eyepieces?

Yes, it uses standard diameter stereo microscope eyepieces of 30 mm barrel diameter.Updated 12/18/13

Does the Advanced Stereo Microscope (#44202) use standard eyepieces?

Yes, it uses standard diameter stereo microscope eyepieces of 30 mm barrel diameter.Updated 12/18/13

What are the three slide specimens in the Microscope Kit (#44121)?

There is no fixed list of slides included with this microscope as they are chosen at random, so each Microscope Kit (#44121) will have different slides. Updated 12/18/13

What are the three slide specimens in the Microscope Kit (#44121)?

There is no fixed list of slides included with this microscope as they are chosen at random, so each Microscope Kit (#44121) will have different slides. Updated 12/18/13

An extremely fine grayscale mesh appears on the screen when I'm using my...

This grid pattern is perfectly normal. It will only appear when using the Y800 codec in iCap. NexImage 5 uses a color sensor and the Y800 codec is for capturing...

An extremely fine grayscale mesh appears on the screen when I'm using my...

This grid pattern is perfectly normal. It will only appear when using the Y800 codec in iCap. NexImage 5 uses a color sensor and the Y800 codec is for capturing...