Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)

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How to Use Reference Line Maps to locate deep sky objects.

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Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)

1. Persian Astronomer Al Sufi, observing from 32 degrees north, was the first to catalogue IC 2391.  He referred to it as a “nebulous star” in reference to omicron Velorum.   Al Sufi’s Book of the Fixed Stars was compiled for epoch 964 A.D.
2. Including IC 2391, Al Sufi recorded a total 8 nebulous objects in the Book of Fixed Stars.  Four were asterisms, three of which had been previously recorded by Ptolemy and Hipparchus.     Two of the remaining three nebulae had been catalogued previously by Ptolemy.
3. The remaining nebula first observed by Al Sufi and recorded in the Book of Fixed Stars is the Andromeda Galaxy, M31.
4. M31 & IC 2391  were to be the last deep sky object catalogued before the invention of the telescope in 1609 A.D.
5. Of the 6 deep sky objects catalogued by Hipparchus, Ptolemy and Al Sufi, IC 2391 is the only object unavailable to northern observers.

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Credits, Links & Resources:

1. A complete online resource for  distances, sizes and locations of deep sky objects is available at seds.org.
2. Sky and Tleescope’s This Week’s Sky At A Glance is worth checking before every stargazing session.
3. Danko’s  Clear Sky Chart provides a 48 hour forecast of observing conditions for every  location  in North America.
4. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy  knowing the heavens and  locating objects for themselves.

Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)

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Observer Notes:

1. Ptolemy, observing from 31 degrees north at Alexandria, first catalogued the Open Cluster in Coma Berenices in his Great Syntaxas.  Ptolemy’s catalog was compiled over a period of 24 years, from 127 A.D. to 151 A.D.
2. Ptolemy recorded 6 nebulous objects in the Great Syntaxas.  Three turned out to be asterisms.  Two of the remaining three, M44 and the Double Cluster in Perseus, had been catalogued previously by Hipparchus.
3. Ptolemy’s cluster, M7,  is the remaining nebulous object first recorded in the Great Syntaxas.

Credits, Links & Resources:

1. The images of  galactic position of eemission nebulae, star clusters and planetary nebulae relative to our own Sun  are provided courtesy of thinkastronomy.com.
2. A complete online resource for  distances, sizes and locations of deep sky objects is available at seds.org.
3. Sky and Tleescope’s This Week’s Sky At A Glance is worth checking before every stargazing session.
4. Danko’s  Clear Sky Chart provides a 48 hour forecast of observing conditions for every  location  in North America.
5. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy  knowing the heavens and  locating objects for themselves.

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NASA Geminids look like most meteors — they tend to be fast-moving and yellow in color. But there’s something special about them. Other meteor showers happen when Earth passes through the debris trail of a comet. Tiny bits of dust no bigger than a grain of sand disintegrate high in our atmosphere and leave behind dazzling streaks of light. But the parent of the Geminids isn’t a comet at all. It appears to be a curious near-Earth asteroid known as 3200 Phaethon.

Geminids Meteor Shower (Courtesy NASA)

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NASA Meteor Crater is one of the youngest and best-preserved impact craters on Earth. The crater formed roughly 50,000 years ago when a 30-meter-wide, iron-rich meteor weighing 100,000 tons struck the Arizona desert at an estimated 20 kilometers per second. The resulting explosion exceeded the combined force of today’s nuclear arsenals and created a 1.1-kilometer-wide, 200-meter-deep crater.

Meteor Crater (Credit NASA)

!st Trio at Dusk –  Messier Marathon Search Sequence

1. Messier Object M74 Star Chart & Deep Sky Map
2. Messier Object M33 Star Chart & Deep Sky Map
3. Messier Object M77 Star Chart & Deep Sky Map

2nd Push –  Messier Marathon Search Sequence

1. Messier Object M42 & M43 Star Chart & Deep Sky Map
2. Messier Object M79 Star Chart & Deep Sky Map
3. Messier Object M34 Star Chart & Deep Sky Map
4. Messier Object M78 Star Chart & Deep Sky Map
5. Messier Object M76 Star Chart & Deep Sky Map
6. Messier Object M52 Star Chart & Deep Sky Map
7. Messier Object M103 Star Chart & Deep Sky Map
8. Messier Object M31, M32 & M110 Star Chart & Deep Sky Map
9. Messier Object M45 Star Chart & Deep Sky Map

3rd Push –  Messier Marathon Search Sequence

1. Messier Object M50 Star Chart & Deep Sky Map
2. Messier Object M46 Star Chart & Deep Sky Map
3. Messier Object M47 Star Chart & Deep Sky Map
4. Messier Object M93 Star Chart & Deep Sky Map
5. Messier Object M1 Star Chart & Deep Sky Map
6. Messier Object M48 Star Chart & Deep Sky Map
7. Messier Object M41 Star Chart & Deep Sky Map
8. Messier Object M67 Star Chart & Deep Sky Map
9. Messier Object M44 Star Chart & Deep Sky Map
10. Messier Object M35 Star Chart & Deep Sky Map
11. Messier Object M38 Star Chart & Deep Sky Map
12. Messier Object M37 Star Chart & Deep Sky Map
13. Messier Object M36 Star Chart & Deep Sky Map

4th Push –  Messier Marathon Search Sequence

1. Messier Object M94 Star Chart & Deep Sky Map
2. Messier Object M108 Star Chart & Deep Sky Map
3. Messier Object M95, M96, M105 Star Chart & Deep Sky Map
4. Messier Object M65 & M66 Star Chart & Deep Sky Map
5. Messier Object M63 Star Chart & Deep Sky Map
6. Messier Object M81 & M82 Star Chart & Deep Sky Map
7. Messier Object M108 & M97 Star Chart & Deep Sky Map
8. Messier Object M109 Star Chart & Deep Sky Map
9. Messier Object M40 Star Chart & Deep Sky Map
10. Messier Object M51 Star Chart & Deep Sky Map

5th Push  –  Messier Marathon Search Sequence

1. Messier Object M91, M88 & M99 Star Chart & Deep Sky Map
2. Messier Object M101 & M102 Star Chart & Deep Sky Map
3. Messier Object M64 Star Chart & Deep Sky Map
4. Messier Object M98 Star Chart & Deep Sky Map
5. Messier Object M100 Star Chart & Deep Sky Map
6. Messier Object M85 Star Chart & Deep Sky Map
7. Messier Object M53 Star Chart & Deep Sky Map
8. Messier Object M3 Star Chart & Deep Sky Map

6th Push  –  Messier Marathon Search Sequence

1. Messier Object M83 Star Chart & Deep Sky Map
2. Messier Object M68 Star Chart & Deep Sky Map
3. Messier Object M104 Star Chart & Deep Sky Map
4. Messier Object M61 Star Chart & Deep Sky Map
5. Messier Object M89 & M90 Star Chart & Deep Sky Map
6. Messier Object M59 & M60 Star Chart & Deep Sky Map
7. Messier Object M58 Star Chart & Deep Sky Map
8. Messier Object M87 Star Chart & Deep Sky Map
9. Messier Object M84 & M86 Star Chart & Deep Sky Map
10. Messier Object M49 Star Chart & Deep Sky Map

7th Push  –  Messier Marathon Search Sequence

1. Messier Object M14 Star Chart & Deep Sky Map
2. Messier Object M12 Star Chart & Deep Sky Map
3. Messier Object M10 Star Chart & Deep Sky Map
4. Messier Object M57 Star Chart & Deep Sky Map
5. Messier Object M5 Star Chart & Deep Sky Map
6. Messier Object M92 Star Chart & Deep Sky Map
7. Messier Object M56 Star Chart & Deep Sky Map
8. Messier Object M39 Star Chart & Deep Sky Map
9. Messier Object M29 Star Chart & Deep Sky Map
10. Messier Object M107 Star Chart & Deep Sky Map
11. Messier Object M71 Star Chart & Deep Sky Map
12. Messier Object M27 Star Chart & Deep Sky Map
13. Messier Object M13 Star Chart & Deep Sky Map

8th Push  –  Messier Marathon Search Sequence

1. Messier Object M23 Star Chart & Deep Sky Map
2. Messier Object M7 Star Chart & Deep Sky Map
3. Messier Object M6 Star Chart & Deep Sky Map
4. Messier Object M62 Star Chart & Deep Sky Map
5. Messier Object M19 Star Chart & Deep Sky Map
6. Messier Object M9 Star Chart & Deep Sky Map
7. Messier Object M4 Star Chart & Deep Sky Map
8. Messier Object M26 Star Chart & Deep Sky Map
9. Messier Object M16 Star Chart & Deep Sky Map
10. Messier Object M11 Star Chart & Deep Sky Map
11. Messier Object M80 Star Chart & Deep Sky Map

9th Push  –  Messier Marathon Search Sequence

1. Messier Object M17 Star Chart & Deep Sky Map
2. Messier Object M25 Star Chart & Deep Sky Map
3. Messier Object M24 Star Chart & Deep Sky Map
4. Messier Object M20 & M21 Star Chart & Deep Sky Map
5. Messier Object M8 Star Chart & Deep Sky Map
6. Messier Object M22 Star Chart & Deep Sky Map
7. Messier Object M18 Star Chart & Deep Sky Map
8. Messier Object M70 Star Chart & Deep Sky Map
9. Messier Object M69 Star Chart & Deep Sky Map
10. Messier Object M75 Star Chart & Deep Sky Map
11. Messier Object M55 Star Chart & Deep Sky Map
12. Messier Object M54 Star Chart & Deep Sky Map
13. Messier Object M28 Star Chart & Deep Sky Map

Final Quintet at Dawn  –  Messier Marathon Search Sequence

1. Messier Object M73 Star Chart & Deep Sky Map
2. Messier Object M72 Star Chart & Deep Sky Map
3. Messier Object M30 Star Chart & Deep Sky Map
4. Messier Object M15 Star Chart & Deep Sky Map
5. Messier Object M2 Star Chart & Deep Sky Map

Project DeepSkyMap

Deep Sky Maps and Star Charts for the complete Messier Catalog along with monthly updates on comets, asteroids, minor planets, meteor shower radiants and hundreds of other deep sky objects.  These maps are designed for use with the Reference Line Method, an intuitive approach to locating deep sky objects, even in less than ideal viewing conditions.

Easy to locate, bright stars are used to construct intersecting lines for every object. Handy laser pointers and red dot finders can be used to locate deep sky objects with dobsonian telescopes or binoculars. Readily adaptable for classroom presentations with Promethean Boards and Interactive Whiteboards.  Learn how to use Reference Line Maps.

How to Use Reference Line Maps to locate deep sky objects.
Credits, Links & Resources:

1. The images of galactic position of eemission nebulae, star clusters and planetary nebulae relative to our own Sun are provided courtesy of thinkastronomy.com.
2. A complete online resource for distances, sizes and locations of deep sky objects is available at seds.org.
3. Sky and Tleescope’s This Week’s Sky At A Glance is worth checking before every stargazing session.
4. Danko’s Clear Sky Chart provides a 48 hour forecast of observing conditions for every location in North America.
5. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy knowing the heavens and locating objects for themselves.


Click on Cover of Field Guide to download free trial at Amazon

Fall Nights Deep Sky Field Guide for the Backyard

Get three for the price of one at Amazon. Each guide can be used simultaneously on a laptop, cell phone and the Kindle. Although these field guides are designed for the liquid ink technology used on the Kindle, you need not own a Kindle to use them. The free “Kindle for PC” from Amazon allows these maps to be used with no glare from a laptop. Additionally, the iPhone and iPad versions, also available at Amazon,are fantastic. Get FREE Samples of these field guides at Amazon: Fall Nights Deep Sky Field Guide or Deep Sky Naked Eye Field Guide

How to Use Reference Line Maps to locate deep sky objects.
Credits, Links & Resources:

1. The images of galactic position of eemission nebulae, star clusters and planetary nebulae relative to our own Sun are provided courtesy of thinkastronomy.com.
2. A complete online resource for distances, sizes and locations of deep sky objects is available at seds.org.
3. Sky and Tleescope’s This Week’s Sky At A Glance is worth checking before every stargazing session.
4. Danko’s Clear Sky Chart provides a 48 hour forecast of observing conditions for every location in North America.
5. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy knowing the heavens and locating objects for themselves.


Click on Cover of Field Guide to download free trial at Amazon

Fall Nights Deep Sky Field Guide for the Backyard

Get three for the price of one at Amazon. Each guide can be used simultaneously on a laptop, cell phone and the Kindle. Although these field guides are designed for the liquid ink technology used on the Kindle, you need not own a Kindle to use them. The free “Kindle for PC” from Amazon allows these maps to be used with no glare from a laptop. Additionally, the iPhone and iPad versions, also available at Amazon,are fantastic. Get FREE Samples of these field guides at Amazon: Fall Nights Deep Sky Field Guide or Deep Sky Naked Eye Field Guide

A set of 7 Reference Line Maps, star charts and DSS photos of M17 aka  Swan Nebula, Omega Nebula, Horseshoe Nebula, Lobster Nebula or Checkmark Nebula.  These maps works well with red dot finders and green laser pointers.  The Reference Line Method method adapts well to both binoculars and telescopes.

How to Use Reference Line Maps to locate deep sky objects.

Credits, Links & Resources:

1. The images of  galactic position of eemission nebulae, star clusters and planetary nebulae relative to our own Sun  are provided courtesy of thinkastronomy.com.
2. A complete online resource for  distances, sizes and locations of deep sky objects is available at seds.org.
3. Sky and Tleescope’s This Week’s Sky At A Glance is worth checking before every stargazing session.
4. Danko’s  Clear Sky Chart provides a 48 hour forecast of observing conditions for every  location  in North America.
5. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy  knowing the heavens and  locating objects for themselves.

Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)

A set of 7 Reference Line Maps, star charts and DSS photos of M25.  These maps works well with red dot finders and green laser pointers.  The Reference Line Method method adapts well to both binoculars and telescopes.

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How to Use Reference Line Maps to locate deep sky objects.

Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)

[[Show as slideshow]]

How to Use Reference Line Maps to locate deep sky objects.

Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)

[[Show as slideshow]]

How to Use Reference Line Maps to locate deep sky objects.

he Reference Line Method method adapts well to both binoculars and telescopes.

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)

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How to Use Reference Line Maps to locate deep sky objects.

Observer Notes:

1. Ptolemy, observing from 31 degrees north at Alexandria, first catalogued M7 in his Great Syntaxas.  Ptolemy’s catalog was compiled over a period of 24 years, from 127 A.D. to 151 A.D.
2. Ptolemy recorded 6 nebulous objects in the Great Syntaxas.  Three turned out to be asterisms.  Two of the remaining three, M44 and the Double Cluster in Perseus, had been catalogued previously by Hipparchus.
3. The Coma Berenices open cluster is the remaining nebulous object first recorded in the Great Syntaxas.

Credits, Links & Resources:

1. The images of  galactic position of eemission nebulae, star clusters and planetary nebulae relative to our own Sun  are provided courtesy of thinkastronomy.com.
2. A complete online resource for  distances, sizes and locations of deep sky objects is available at seds.org.
3. Sky and Tleescope’s This Week’s Sky At A Glance is worth checking before every stargazing session.
4. Danko’s  Clear Sky Chart provides a 48 hour forecast of observing conditions for every  location  in North America.
5. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy  knowing the heavens and  locating objects for themselves.

Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)

[[Show as slideshow]]

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

deep sky astronomy $9.99 Click on Book Cover to View Book Details or Purchase

THESE FIELD GUIDES TOP THE STARGAZING BEST SELLER LIST IN THE KINDLE STORE

You don’t have to own a Kindle to use these field guides! Download to Laptop and use with Amazon’s FREE “Kindle for PC” application. Using this program, glare from laptop monitor can be reduced to a minimum to allow use under the night sky while preserving dark adapted vision. Limited Time Offer–Try the maps on any or all 3 — iPhone, laptop and Kindle–for just 99 cents.

Deep Sky Naked Eye Field Guide for Kindle: 167 Step by Step Maps by P. Messier Renaix

Get Amazon’s FREE Kindle for iPad or iPhone App when you Download a FREE exrtra set of maps to your iPad or iPhone

Click on Cover of Fall Nights Deep Sky Field Guide to purchase at Amazon

Fall Nights Deep Sky Field Guide for the Backyard

Get three for the price of one at Amazon. Each guide can be used simultaneously on a laptop, cell phone and the Kindle. Get FREE Samples of these field guides at Amazon: Fall Nights Deep Sky Field Guide or Deep Sky Naked Eye Field Guide.

A set of 7  Reference Line Maps, star charts and DSS photos of M57, the Ring Nebula.  These maps works well with red dot finders and green laser pointers.  The Reference Line Method method adapts well to both binoculars and telescopes.

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

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How to Use Reference Line Maps to locate deep sky objects1

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

Notes:

1. If you have dark enough skies to see all of the stars in Monoceros you won’t have any difficulty locating M50.
2. Jones:  “Although the area, like much of the Milky Way, is rich in groups of faint stars, M50 stands out well as a separate cluster by virtue of having a ring of slightly darker sky surrounding it.”

How to Use Reference Line Maps to locate deep sky objects.

Credits, Links & Resources:

1. The images of  galactic position of eemission nebulae, star clusters and planetary nebulae relative to our own Sun  are provided courtesy of thinkastronomy.com.
2. Sky and Telescope’’s  This Week’s Sky At A Glance is worth checking before every stargazing session.
3. Danko’s  Clear Sky Chart provides a 48 hour forecast of observing conditions for every  location  in North America.
4. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy  knowing the heavens and  locating objects for themselves.

How to Use Reference Line Maps to locate deep sky objects.

Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)

[[Show as slideshow]]

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

Download Full Set of  Printable Maps of M1.

A set of 10  Reference Line Maps, star charts and DSS photos of Supernova Remnant  M1, the Crab Nebula.  These maps works well with red dot finders and green laser pointers.  The Reference Line Method method adapts well to both binoculars and telescopes.

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How to Use Reference Line Maps to locate deep sky objects.

Observer Notes:

1. M1 can be difficult in any but the best conditions.  If conditions are good enough to allow location of both reference lines, M1 will be easy.
2. Distinctive serrated outline and filaments will only be visible with large telescopes, but irregular outline is observable with many medium-sized scopes under good viewing conditions.
3. Messier:  “Nebulosity along the southern horn of Taurus.  It contains no star; it is a whitish light, elongated like the flame of a taper, discovered while observing the comet of 1758.”

Credits, Links & Resources:

1. The images of  galactic position of eemission nebulae, star clusters and planetary nebulae relative to our own Sun  are provided courtesy of thinkastronomy.com.
2. Sky and Telescope’’s  This Week’s Sky At A Glance is worth checking before every stargazing session.
3. Danko’s  Clear Sky Chart provides a 48 hour forecast of observing conditions for every  location  in North America.
4. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy  knowing the heavens and  locating objects for themselves.

Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)

[[Show as slideshow]]

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky objects.

Notes:

1. This remarkable pair of galaxies is fairly easy to locate because the bright reference stars are located at a comfortable distance from each other.
2. Jones:  “Both galaxies are bright and distinct and, although M66 is actually the brighter, M65 tends to appear more conspicuous owing to its more ’streaky’ outline.”

How to Use Reference Line Maps to locate deep sky objects.

Credits, Links & Resources:

1. Sky and Telescope’’s  This Week’s Sky At A Glance is worth checking before every stargazing session.
2. Danko’s  Clear Sky Chart provides a 48 hour forecast of observing conditions for every  location  in North America.
3. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy  knowing the heavens and  locating objects for themselves.

[[Show as slideshow]]

How to Use Reference Line Maps to locate deep sky objects.

How to Use Reference Line Maps to locate deep sky object.
Credits, Links & Resources:

1. The images of galactic position of eemission nebulae, star clusters and planetary nebulae relative to our own Sun are provided courtesy of thinkastronomy.com.
2. A complete online resource for distances, sizes and locations of deep sky objects is available at seds.org.
3. Sky and Tleescope’s This Week’s Sky At A Glance is worth checking before every stargazing session.
4. Danko’s Clear Sky Chart provides a 48 hour forecast of observing conditions for every location in North America.
5. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy knowing the heavens and locating objects for themselves.


Click on Cover of Field Guide to download free trial at Amazon

Fall Nights Deep Sky Field Guide for the Backyard

Get three for the price of one at Amazon. Each guide can be used simultaneously on a laptop, cell phone and the Kindle. Although these field guides are designed for the liquid ink technology used on the Kindle, you need not own a Kindle to use them. The free “Kindle for PC” from Amazon allows these maps to be used with no glare from a laptop. Additionally, the iPhone and iPad versions, also available at Amazon,are fantastic. Get FREE Samples of these field guides at Amazon: Fall Nights Deep Sky Field Guide or Deep Sky Naked Eye Field Guide

How to Use Reference Line Maps to locate deep sky objects.
Credits, Links & Resources:

1. The images of galactic position of eemission nebulae, star clusters and planetary nebulae relative to our own Sun are provided courtesy of thinkastronomy.com.
2. A complete online resource for distances, sizes and locations of deep sky objects is available at seds.org.
3. Sky and Tleescope’s This Week’s Sky At A Glance is worth checking before every stargazing session.
4. Danko’s Clear Sky Chart provides a 48 hour forecast of observing conditions for every location in North America.
5. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy knowing the heavens and locating objects for themselves.


Click on Cover of Field Guide to download free trial at Amazon

Fall Nights Deep Sky Field Guide for the Backyard

Get three for the price of one at Amazon. Each guide can be used simultaneously on a laptop, cell phone and the Kindle. Although these field guides are designed for the liquid ink technology used on the Kindle, you need not own a Kindle to use them. The free “Kindle for PC” from Amazon allows these maps to be used with no glare from a laptop. Additionally, the iPhone and iPad versions, also available at Amazon,are fantastic. Get FREE Samples of these field guides at Amazon: Fall Nights Deep Sky Field Guide or Deep Sky Naked Eye Field Guide