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The Night Sky 30°-40° (Large; North Latitude) Large Plastic 30-40 degrees Edition Edition

135 customer reviews
ISBN-13: 978-0961320751
ISBN-10: 0961320753
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Editorial Reviews


Chandler's planisphere is the finest available. -- Terence Dickinson, astronomy textbook author, in SkyNews Magazine --Terence Dickinson

I think The Night Sky is the finest and easiest to use star finding aid in existence. -- Jack Horkheimer, TV's Star Hustler. --Jack Horkheimer

Most aficionados now prefer David Chandler's The Night Sky wheel. -- J.T. Westways Magazine --Westways Magazine

From the Publisher

The Night Sky comes in two sizes: Large (8 inch diameter) and Small (5 inch diameter). The large size is best for learning the constellations. The small size is best as a pocket reference to tell you what constellations are up if you are already reasonably familiar with the constellations. In each size the charts are available for different latitude zones.

To find the correct size and latitude zone, use the following ISBN numbers in your search:

The Night Sky 50°-60° (Large), 1891938088 (Small), 1891938096

The Night Sky 40°-50° (Large), 0961320745 (Small), 1891938010

The Night Sky 30°-40° (Large), 0961320753 (Small), 1891938029

The Night Sky 20°-30° (Large), 0961320761 (Small), 1891938037

The Night Sky Southern Hemisphere (Large), 0961320737 (Small), 1891938002


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Product Details

  • Map: 2 pages
  • Publisher: David Chandler Co.; Large Plastic 30-40 degrees Edition edition (January 1, 1998)
  • Language: English
  • ISBN-10: 0961320753
  • ISBN-13: 978-0961320751
  • Product Dimensions: 0.2 x 8.5 x 10 inches
  • Shipping Weight: 2.4 ounces (View shipping rates and policies)
  • Average Customer Review: 4.7 out of 5 stars  See all reviews (135 customer reviews)
  • Amazon Best Sellers Rank: #12,761 in Books (See Top 100 in Books)

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Customer Reviews

Most Helpful Customer Reviews

159 of 159 people found the following review helpful By Bill Wiegert on February 19, 2001
Format: Map
A rotating starfinder like this one (often referred to as a "Planisphere") effectively shows how the night sky looks at any given time on any night of the year. For instance, if it's 10 p.m. on April 30th, just line up April 30th on the outer wheel with 10 p.m. on the inner wheel. The starfinder will thus display the position and orientation of the constellations that are visible to you at that time. As time passes, celestial objects "drift" from east to west due to the Earth's rotation. Occasional adjustment (rotating the planisphere's inner wheel to keep up with passing time) will sustain an accurate representation. As with any night-time observing aid, it should be viewed with red light.
Planispheres are generally manufactured in incremental versions to accommodate various bandwidths of latitudes from which to use them. For northern latitudes they are most commonly offered in 20/30; 30/40; and 40/50-degree versions. The Night Sky "30-40" matches latitudes from 30 to 40 degrees North, i.e.: - the mid-southern United States. You should select the one that brackets your particular latitude.
Classic boundaries of the constellations are highlighted with lines connecting principal stars down to 5th magnitude. A few of the more significant celestial objects are represent as well, i.e.: - M31. Right Ascension and Declination scales are provided. The front side shows the sky as you face north. Turning the planisphere over (from front to back) shows the sky as it looks facing south - and without distortion.
A good starfinder is a useful tool, and Chandler's Night Sky planisphere has become my personal favorite. It makes for a good learning device as well, and is the planisphere of choice for Terrence Dickinson ("The Backyard Astronomer's Guide").
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76 of 77 people found the following review helpful By Onthewall on February 6, 2007
Format: Map
Superb product. The prduct is made of sturdy material(plastic?) not like the cardboard one I owned in the past. I love the clear plastic cover which can keep the dew and my fingerprints at bay. The chart itself, in addition, to the constellations locates Messier objects and nebulae.

This is great item to take on a camping trips or just stash in the glove compartment for impromptu stops to see the stars.

Make sure you buy the chart that is at or near the latitude where you live. The USA runs from 30-50 degrees latitude. So if you live at or south of New York and Denver then get the 30-40. If much above that, get the 40-50 degree latitude
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38 of 39 people found the following review helpful By mikef on January 4, 2007
Format: Map Verified Purchase
After much careful comparing I found this Plainesphere to be the best one out there. Has a back side which is actually useful. I bought 2 as Christmas gifts and were enthusiastically received. Highly recommended.

By the way - also get a Red LED flashlight to go with these to preserve night vision. Amazon has a great small one at a good price.
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28 of 28 people found the following review helpful By Mr. Grim on April 15, 2009
Format: Map
As an astronomy enthusiast for over 40 years, and now an astronomy professor, I'm often asked "How do I know what I'm looking at?" or "How do I find constellations like the Big Dipper or Orion?" The answer for every beginner is to use a good planisphere - a rotating star map that shows you what the stars and constellations look like from your location at any time of night, any night of the year. The rotating star map - the planisphere - does this easily and without any effort. If you can tell time, and you know what day it is - you can use this product easily! Everyone from children as young as 7 years old to college students find this to be a user friendly way to learn the sky.
Chandler's planisphere is a step above most others because it has very little distortion - the shapes of constellations on the map are the same as they appear when you see them in the sky (very important for new or younger astronomers!) The Chandler map is also rugged enough to withstand years of use - I have classroom models that have been in use for 10 years and more.
Be sure to get the right version for where you live! The 30-40 degree model covers northern Mexico through the central USA. Northern US and Canada will need the 40-50 degree version.
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23 of 24 people found the following review helpful By Mr. Glen Micallef on August 16, 2005
Format: Map
Actually I would give this planisphere a rating of 3.5 rather than 4. It is a good planisphere overall. The plastic it is made of is of good quality & it comes in a plastic cover for storage. Instructions are printed on one side for the beginner, and they are brief yet very explanatory. Blue ink against a white background make this planisphere very easy to read under filtered red light since the blue appears black under red light. However, I find it lacks detail. Although all constellations are on it, only a few Messier objects are plotted. I've seen other planispheres with much more detail. Another thing it lacks is a list of the planets & when they are best viewed. I've seen this list on many other planispheres, but not on this one. The bottom line, however, is that this is a very good planisphere for those beginners who want to learn well the constellations.
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21 of 26 people found the following review helpful By C. Vance on February 7, 2011
Format: Map Verified Purchase
This was my first planisphere.

After a few frustrating nights trying to use it, I bought the Guide to the Stars which I like very much.

I found myself constantly flipping this from side to side to figure out what objects I saw above me. As I flipped it I had to constantly turn to face north or south depending on which side I was looking at.

To give an example of how confusing this can be...

At the time I was viewing, 10:00PM, Dec 15, Orion's belt was on the right side of the chart, and on the back it was on the left. Also on the front Rigel was above the belt, on the back it was below the belt.

This is necessary because you face north when using the front and south when using the back. Each time I flipped the chart, I had to reorient myself to compare what I was seeing in the sky with what I was seeing on the chart.

It's accurate but can be very frustrating when trying to get a big picture.

The publisher claims using a two sided projection reduces sky distortion, that conventional planispheres severely distort the sky near the southern horizon. This may be an advantage if you have an unobstructed horizon and no sky glow.

Also this is relatively small, eight inches across. There is no extra information on it like there is with the "Guide to the Stars" planispheres. There is little in the way of explanation. For example the ecliptic is shown but not explained. Nor is the celestial equator explained.

I feel this could be a good tool for an experienced viewer who wants a compact and quick refresher on what he's looking at, but not for a beginner who wants to learn the sky.
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The Night Sky 30°-40° (Large; North Latitude)
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