Sky and Telescope's Pocket Sky Atlas Jumbo Edition Roger W. Sinnott Spiral Larger Format Star Charts Review (2026)

Who the Jumbo Edition is for

This atlas is aimed at observers who already appreciate the accuracy and depth of Roger Sinnott's original Pocket Sky Atlas but found the standard edition's small print genuinely hard to read by dim red flashlight at the eyepiece, especially after middle age makes close reading more difficult in low light. It suits anyone who observes mostly from a fixed spot in the backyard or a car trunk rather than hiking to a dark site, since the larger book trades away the compactness that made the original pocket edition easy to carry in a jacket. Clubs and observing groups that keep a shared reference atlas at a table or eyepiece station will also find the larger format easier for more than one person to read at once.

Chart coverage and content

The atlas plots more than 30,000 stars, each sized according to relative brightness so the naked eye view of a star field matches what is printed on the page, along with 1,500 deep sky objects color coded by type, including 675 galaxies drawn oriented as they actually appear in the sky rather than in a standardized orientation. The Jumbo Edition includes 10 close-up charts of high interest star fields, six more than the original pocket atlas offered, giving denser detail in busy regions like the Virgo Cluster or the area around the Orion Nebula where the standard whole sky charts get crowded with symbols.

Format, binding and physical size

This edition measures roughly 11.7 by 8.3 inches and weighs about 32.9 ounces, considerably larger and heavier than the standard Pocket Sky Atlas, and it uses the same wire spiral binding with stiffer covers than the original, which lets the book lie flat or fold back on itself at the eyepiece without needing to hold pages open with a hand. The larger page size means labels, magnitude symbols and constellation boundaries are printed noticeably bigger than in the standard edition, which is the entire point of the Jumbo format and the main reason buyers choose it over the smaller original.

Using it at the telescope

Because it is spiral bound with stiff covers, the atlas can rest open on a table or in an observing chair tray without curling shut, a practical detail for repeatedly flipping between charts during a session of star-hopping to multiple targets. The larger, more exposed pages are more prone to picking up dew during a long session than the smaller standard atlas, so observers working from a fixed setup in humid conditions may want to keep it under a cover or in a bag between uses rather than leaving it open on a table all night.

Verdict and how it compares

This atlas earns a strong score as a highly legible, well organized star atlas for the eyepiece, and it ranks just behind the original standard sized Pocket Sky Atlas in the star atlas comparison it belongs to, reflecting that many observers still prefer the smaller book's true portability over the Jumbo Edition's improved readability. Buyers who observe mostly from one location and value being able to read charts easily without straining in dim red light will prefer this larger edition, while anyone who regularly hikes to dark sites or travels with minimal gear will likely still prefer the original pocket sized atlas.

Frequently asked questions