For many of us, our very first experience of learning about the celestial bodies begins when we saw our first full moon in the sky. It is truly a magnificent view even to the naked eye. If the night is clear, you can see amazing detail of the lunar surface just star gazing on in your back yard.
Naturally, as you grow in your love of astronomy, you will find many celestial bodies fascinating. But the moon may always be our first love because is the one far away space object that has the unique distinction of flying close to the earth and upon which man has walked.
Your study of the moon, like anything else, can go from the simple to the very complex. To gaze at the moon with the naked eye, making yourself familiar with the lunar map will help you pick out the seas, craters and other geographic phenomenon that others have already mapped to make your study more enjoyable. Moon maps can be had from any astronomy shop or online and they are well worth the investment.
The best time to view the moon, obviously, is at night when there are few clouds and the weather is accommodating for a long and lasting study. The first quarter yields the greatest detail of study. And don’t be fooled but the blotting out of part of the moon when it is not in full moon stage. The phenomenon known as “earthshine” gives you the ability to see the darkened part of the moon with some detail as well, even if the moon is only at quarter or half display.
To kick it up a notch, a good pair of binoculars can do wonders for the detail you will see on the lunar surface. For best results, get a good wide field in the binocular settings so you can take in the lunar landscape in all its beauty. And because it is almost impossible to hold the binoculars still for the length of time you will want to gaze at this magnificent body in space, you may want to add to your equipment arsenal a good tripod that you can affix the binoculars to so you can study the moon in comfort and with a stable viewing platform.
Of course, to take your moon worship to the ultimate, stepping your equipment up to a good starter telescope will give you the most stunning detail of the lunar surface. With each of these upgrades your knowledge and the depth and scope of what you will be able to see will improve geometrically. For many amateur astronomers, we sometimes cannot get enough of what we can see on this our closest space object.
To take it to a natural next level, you may want to take advantage of partnerships with other astronomers or by visiting one of the truly great telescopes that have been set up by professionals who have invested in better techniques for eliminating atmospheric interference to see the moon even better. The internet can give you access to the Hubble and many of the huge telescopes that are pointed at the moon all the time. Further, many astronomy clubs are working on ways to combine multiple telescopes, carefully synchronized with computers for the best view of the lunar landscape.
Becoming part of the society of devoted amateur astronomers will give you access to these organized efforts to reach new levels in our ability to study the Earth’s moon. And it will give you peers and friends who share your passion for astronomy and who can share their experience and areas of expertise as you seek to find where you might look next in the huge night sky, at the moon and beyond it in your quest for knowledge about the seemingly endless universe above us. Maria Marcotte
Thursday, May 14, 2009
Amazing astronomy by Maria Marcotte
Our Neighbors in Space
We have a special feeling toward the other planets that circle our sun. Maybe it’s all the science fiction stories about visiting the moon, Mars and other planets. But we love to think about those planets that make up what we call “the solar system.” that do what our planet does but do it very differently indeed.
The planets of our solar system have taken on personalities and mythical appeal in our literature and arts. It is easy to find artists who render their vision of the planets that make up our society of planets near our sun. The names of the planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune are all from our cultural past being gods from Greek and Roman mythology. But the solar system is not just made up of these planets. The solar system is a very busy place indeed.
In 2006, there was quite a bit of controversy as scholars and astronomers agreed to downgrade Pluto and remove its status as a planet. So you have to wonder, what is it that makes something a planet and what happened to Pluto? It didn’t just go away so it must still be out there. A planet, by scientific definition is any object in orbit around a sun, that has formed into some kind of round object is a planet as long as it has cleared away any other orbiting items around it. By cleared away, that doesn’t mean it has destroyed all space debris etc. For example, our planet has not “cleared away” the moon but it has captured it into its own orbit so we classify as a planet. That’s a relief huh?
There are many objects floating around in our solar system other than the planets we know of. It’s an interesting piece of trivia that in addition to the planets there are 165 moons orbiting around those nine planets. Some of those moons are so advanced that some scientists have suspected that they might have supported life at some point.
In addition to the regular planets and moons, there are dwarf planets, asteroid belts and routine visits by comets that create a lot of traffic in our cosmic corner of the universe. The two known dwarf planets that exist on the outer rim of our solar system are Eries and Ceres. So when Pluto’s status was changed to be removed from the list of planets, it simply joined those two bodies as dwarf planets but still a solid citizen of the community of celestial bodies around our sun.
In addition to these larger bodies, there is an asteroid belt that exists between Mars and Jupiter that most of the asteroids that we see in our night sky come from. There is another belt of large objects further out called the Kuiper belt as well as a “bubble” in space called a heliopause and there is a suspected additional belt outside the known solar system called the Oort belt that we think is the origin of a lot of large asteroids and comets that frequent our solar system and come to orbit our sun.
As fascinating as these many celestial bodies who are our neighbors in space is the origin of our solar system. We have to break it down to simple terms to understand the terms but we know that the early history of the solar system and the universe was one of great bodies of gas and clouds of matter eventually cooling and heating, exploding and spinning off stars and other massive space giants that became more stars, galaxies and solar systems. It was from this erratic activity that our sun separated from the gasses and carried with it the material that became our solar system. The gravity of the sun captured sufficient matter that it began to go through the process of forming, cooling, exploding and separating. This is what happened as the planets all went through he same process eventually establishing stable orbits and small objects falling into orbit around them.
When you think of how powerful and out of control this process is, it’s amazing to step back and see the beauty of the organization of our solar system today. The more detail you learn about the history of our solar system, the more you will enjoy your explorations of the planets with your telescope. That that discovery is part of the fun of astronomy. Maria Marcotte
We have a special feeling toward the other planets that circle our sun. Maybe it’s all the science fiction stories about visiting the moon, Mars and other planets. But we love to think about those planets that make up what we call “the solar system.” that do what our planet does but do it very differently indeed.
The planets of our solar system have taken on personalities and mythical appeal in our literature and arts. It is easy to find artists who render their vision of the planets that make up our society of planets near our sun. The names of the planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune are all from our cultural past being gods from Greek and Roman mythology. But the solar system is not just made up of these planets. The solar system is a very busy place indeed.
In 2006, there was quite a bit of controversy as scholars and astronomers agreed to downgrade Pluto and remove its status as a planet. So you have to wonder, what is it that makes something a planet and what happened to Pluto? It didn’t just go away so it must still be out there. A planet, by scientific definition is any object in orbit around a sun, that has formed into some kind of round object is a planet as long as it has cleared away any other orbiting items around it. By cleared away, that doesn’t mean it has destroyed all space debris etc. For example, our planet has not “cleared away” the moon but it has captured it into its own orbit so we classify as a planet. That’s a relief huh?
There are many objects floating around in our solar system other than the planets we know of. It’s an interesting piece of trivia that in addition to the planets there are 165 moons orbiting around those nine planets. Some of those moons are so advanced that some scientists have suspected that they might have supported life at some point.
In addition to the regular planets and moons, there are dwarf planets, asteroid belts and routine visits by comets that create a lot of traffic in our cosmic corner of the universe. The two known dwarf planets that exist on the outer rim of our solar system are Eries and Ceres. So when Pluto’s status was changed to be removed from the list of planets, it simply joined those two bodies as dwarf planets but still a solid citizen of the community of celestial bodies around our sun.
In addition to these larger bodies, there is an asteroid belt that exists between Mars and Jupiter that most of the asteroids that we see in our night sky come from. There is another belt of large objects further out called the Kuiper belt as well as a “bubble” in space called a heliopause and there is a suspected additional belt outside the known solar system called the Oort belt that we think is the origin of a lot of large asteroids and comets that frequent our solar system and come to orbit our sun.
As fascinating as these many celestial bodies who are our neighbors in space is the origin of our solar system. We have to break it down to simple terms to understand the terms but we know that the early history of the solar system and the universe was one of great bodies of gas and clouds of matter eventually cooling and heating, exploding and spinning off stars and other massive space giants that became more stars, galaxies and solar systems. It was from this erratic activity that our sun separated from the gasses and carried with it the material that became our solar system. The gravity of the sun captured sufficient matter that it began to go through the process of forming, cooling, exploding and separating. This is what happened as the planets all went through he same process eventually establishing stable orbits and small objects falling into orbit around them.
When you think of how powerful and out of control this process is, it’s amazing to step back and see the beauty of the organization of our solar system today. The more detail you learn about the history of our solar system, the more you will enjoy your explorations of the planets with your telescope. That that discovery is part of the fun of astronomy. Maria Marcotte
Stars to see by Maria Marcotte
One of the earliest activities we engaged in when we first got into astronomy is the same one we like to show our children just as soon as their excitement about the night sky begins to surface. That is the fun of finding constellations. But finding constellations and using them to navigate the sky is a discipline that goes back virtually to the dawn of man. In fact, we have cave pictures to show that the more primitive of human societies could “see pictures” in the sky and ascribe to them significance.
Constellations also have been important in culture and navigation long before we had sophisticated systems of navigation. Early explorers, particularly by sea, relied exclusively on the night sky to help them find their way to their destination. In fact, when “Columbus sailed the ocean blue in 1492” and “discovered” America, he could not have done it without astronomy and the help of navigation of the cosmos, much of which is made possible because of the important constellations.
When learning to find the great constellations in the sky, we use the “find one, you found them all” system. That is because the easiest constellation to find will guide us to the rest of them. That constellation is The Big Dipper. Look to the northern sky on a clear night and widen your field of vision from just focusing on one star and it will pretty much jump out at you. In will look like a big kitchen pot or ladle, right side up in the fall, upside down in the spring.
When you have the big dipper under control, you can pretty easily find the North Star. This is the star that those ancient sailors depended on the most to find their way to land. Start with the far edge of the bowl of the Big Dipper, the side that is opposite the handle. There are two stars that make up that side of the bowl. So start at the bottom of the pot and mentally draw a line to the top star of the bowl. These two stars are “pointing” to the North Star. Just keep following that line, curving a bit with the sky and the bright star that you come to is the North Star. You can impress your friends or family if you know the scientific name for this star is Polaris.
The North Star can then take you to The Little Dipper. The key here is that Polaris is the tip of the handle of The Little Dipper and the bowl hangs down from the handle like it was hanging up in the kitchen. Be patient with this one as the stars that make up The Little Dipper are dimmer than The Big Dipper. But it pretty cool once you find it.
These are the obvious starting places but from The Little Dipper you can find the constellation known as “The Swan” or Cygnus. Just use the same system you used to find The North Star but continue drawing that line that started in those pointer stars in the bowl of The Big Dipper. Go about half as far as you went to find Polaris and you are there. You will see a trapezoid of stars about as big as The Big Dipper. This trapezoid forms the tail of The Swan.
That line that we are drawing from the pointer stars is our roadmap to another well known constellation which is Cassiopeia. If you use that line and imagine you are directly under the two pointer stars, you will se a big “W” just off to the left of the line. This is the constellation Cassiopeia, the wife of the king of Egypt, Cepheus, in Greek mythology. There are so many more wonderful constellations to find and a good star map can continue your quest.
Like Cassiopeia, all of the constellations have wonderful stories and myths related to Greek culture. It is just as fun to find the star clusters themselves as it is to enjoy the rich culture related to that constellation. For all of the signs of the zodiac, for example, there is a related constellation in the sky. So whether you are serious about astrology or not, its fun to find the constellation that relates to your “sign” (or that of your children) and be able to see how the ancients related to these pictures in the sky. Maria Marcotte
Constellations also have been important in culture and navigation long before we had sophisticated systems of navigation. Early explorers, particularly by sea, relied exclusively on the night sky to help them find their way to their destination. In fact, when “Columbus sailed the ocean blue in 1492” and “discovered” America, he could not have done it without astronomy and the help of navigation of the cosmos, much of which is made possible because of the important constellations.
When learning to find the great constellations in the sky, we use the “find one, you found them all” system. That is because the easiest constellation to find will guide us to the rest of them. That constellation is The Big Dipper. Look to the northern sky on a clear night and widen your field of vision from just focusing on one star and it will pretty much jump out at you. In will look like a big kitchen pot or ladle, right side up in the fall, upside down in the spring.
When you have the big dipper under control, you can pretty easily find the North Star. This is the star that those ancient sailors depended on the most to find their way to land. Start with the far edge of the bowl of the Big Dipper, the side that is opposite the handle. There are two stars that make up that side of the bowl. So start at the bottom of the pot and mentally draw a line to the top star of the bowl. These two stars are “pointing” to the North Star. Just keep following that line, curving a bit with the sky and the bright star that you come to is the North Star. You can impress your friends or family if you know the scientific name for this star is Polaris.
The North Star can then take you to The Little Dipper. The key here is that Polaris is the tip of the handle of The Little Dipper and the bowl hangs down from the handle like it was hanging up in the kitchen. Be patient with this one as the stars that make up The Little Dipper are dimmer than The Big Dipper. But it pretty cool once you find it.
These are the obvious starting places but from The Little Dipper you can find the constellation known as “The Swan” or Cygnus. Just use the same system you used to find The North Star but continue drawing that line that started in those pointer stars in the bowl of The Big Dipper. Go about half as far as you went to find Polaris and you are there. You will see a trapezoid of stars about as big as The Big Dipper. This trapezoid forms the tail of The Swan.
That line that we are drawing from the pointer stars is our roadmap to another well known constellation which is Cassiopeia. If you use that line and imagine you are directly under the two pointer stars, you will se a big “W” just off to the left of the line. This is the constellation Cassiopeia, the wife of the king of Egypt, Cepheus, in Greek mythology. There are so many more wonderful constellations to find and a good star map can continue your quest.
Like Cassiopeia, all of the constellations have wonderful stories and myths related to Greek culture. It is just as fun to find the star clusters themselves as it is to enjoy the rich culture related to that constellation. For all of the signs of the zodiac, for example, there is a related constellation in the sky. So whether you are serious about astrology or not, its fun to find the constellation that relates to your “sign” (or that of your children) and be able to see how the ancients related to these pictures in the sky. Maria Marcotte
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