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Foreign Language Planispheres

The Night Sky planisphere is available in Spanish and Japanese. These translations have been written and critiqued by native speaking expert astronomers for clarity and accuracy. Each language version is available in latitude versions that cover regions where the language is prominent. more…
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Wholesalers and Distributors

David Chandler Company, Inc. provides products to a wide variety of retail and non-profit partners. Read More for information about carrying our great products. more…
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Why the Red Light?

Why do you need a red light to read your charts at night? It can take up to 45 minutes for the human eye to completely adapt to darkness as a protein called Rhodopsin builds up in the rod cells. Once your night vision is adapted you might be surprised …
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Planisphere or App?

Now that smartphones and tablets have become ubiquitous many people ask us why we don’t publish a planisphere app instead of continuing to sell physical planispheres. The answer is that, in this case, there are several advantages to the physical format. more…