Knowledge Base
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Popular Articles
How do I get the various magnifications with my Handheld Digital and Opt...
When the microscope is in the low-power position and used with the eyepiece, the objective lens in the tube is positioned up in the microscope’s body. With the microscope placed...
How do I get the various magnifications with my Handheld Digital and Opt...
When the microscope is in the low-power position and used with the eyepiece, the objective lens in the tube is positioned up in the microscope’s body. With the microscope placed...
What is bright-field illumination? How is it different from dark-field i...
In order to clearly see specimens, a microscope will need to light or illuminate them. The most common type of illumination for biological microscopes is bottom illumination, or a light...
What is bright-field illumination? How is it different from dark-field i...
In order to clearly see specimens, a microscope will need to light or illuminate them. The most common type of illumination for biological microscopes is bottom illumination, or a light...
I need a case or bag for my scope and I can’t find it on your website. W...
Celestron no longer carries cases, etc. for all the telescopes and tripods we sell. There are several other companies that have products useful for storing and or transporting your astronomical...
I need a case or bag for my scope and I can’t find it on your website. W...
Celestron no longer carries cases, etc. for all the telescopes and tripods we sell. There are several other companies that have products useful for storing and or transporting your astronomical...
My refractor shows color fringes since it’s not an apochromatic design. ...
Many refractors are two-element conventional achromatic designs, which leave what’s called residual color. This means the designs don’t fully remove all the color left over from dispersion of light...
My refractor shows color fringes since it’s not an apochromatic design. ...
Many refractors are two-element conventional achromatic designs, which leave what’s called residual color. This means the designs don’t fully remove all the color left over from dispersion of light...
The AstroMaster 114 models have a 1000 mm focal length. Why are the tube...
No. Both tubes are identical in optical design. The reason the tube is so short is because the optical design incorporates a Barlow lens built into the focuser. This lens...
The AstroMaster 114 models have a 1000 mm focal length. Why are the tube...
No. Both tubes are identical in optical design. The reason the tube is so short is because the optical design incorporates a Barlow lens built into the focuser. This lens...
How do I get a replacement lens cap?
We no longer supply caps/covers for older optics. We recommend reaching out to third party vendors and inquiring to see if they have caps for your optics. Search options:Call or visit...
How do I get a replacement lens cap?
We no longer supply caps/covers for older optics. We recommend reaching out to third party vendors and inquiring to see if they have caps for your optics. Search options:Call or visit...