Night Sky Checklist July–August–September Unaided Eye Astronomy
... Delphinus, the Dolphin, is a faint little constellation that is noticeable mainly because it lies just outside the Summer Triangle between Cygnus and Aquila. Stars (The stars on the checklist are easily visible to the unaided eye except in the most light polluted parts of cities.) Antares is a red s ...
... Delphinus, the Dolphin, is a faint little constellation that is noticeable mainly because it lies just outside the Summer Triangle between Cygnus and Aquila. Stars (The stars on the checklist are easily visible to the unaided eye except in the most light polluted parts of cities.) Antares is a red s ...
First Light for May, 2001 - South Bay Astronomical Society
... star, a galaxy or a cluster of galaxies. In reality, the universe is finite in age, so this isn't quite the case. There are objects that emit light from the past 13.7 billion years—99 percent of the age of the universe—but none before that. Even in theory, there are no stars or galaxies to see beyon ...
... star, a galaxy or a cluster of galaxies. In reality, the universe is finite in age, so this isn't quite the case. There are objects that emit light from the past 13.7 billion years—99 percent of the age of the universe—but none before that. Even in theory, there are no stars or galaxies to see beyon ...
20 pm - Starmap
... As a starting point, face North, holding the map in your eyesight direction, with its North down. As you change the direction, rotate the map accordingly. The objects listed on the first page can be observed with naked eyes, in clear skies, with moderate light pollution. Close your eyes one minute a ...
... As a starting point, face North, holding the map in your eyesight direction, with its North down. As you change the direction, rotate the map accordingly. The objects listed on the first page can be observed with naked eyes, in clear skies, with moderate light pollution. Close your eyes one minute a ...
Upcoming Events
... regions like the Orion Nebula, containing thousands of new stars with light so bright it's visible to the naked eye. At over 400 parsecs (1,300 light years) distant, it's one of the most spectacular sights in the night sky, and the vast majority of the light from galaxies originates from nebulae lik ...
... regions like the Orion Nebula, containing thousands of new stars with light so bright it's visible to the naked eye. At over 400 parsecs (1,300 light years) distant, it's one of the most spectacular sights in the night sky, and the vast majority of the light from galaxies originates from nebulae lik ...
Series Telescopes INSTRUCTION MANUAL
... the money spent. Because the light path is intercepted and reflected out to the side, you can have focal lengths up to 1000mm and still enjoy a telescope that is relatively compact and portable. A Newtonian Reflector telescope offers such impressive light-gathering characteristics you can take a ser ...
... the money spent. Because the light path is intercepted and reflected out to the side, you can have focal lengths up to 1000mm and still enjoy a telescope that is relatively compact and portable. A Newtonian Reflector telescope offers such impressive light-gathering characteristics you can take a ser ...
From the Everett and Seattle Astronomical
... Dark nebulae are clouds of dust which are simply blocking the light from whatever is behind. Reflection nebulae are clouds of dust which are reflecting the light of a nearby star or stars. Planetary nebulae are shells of gas thrown out by some stars near the end of their lives. Our Sun will probably ...
... Dark nebulae are clouds of dust which are simply blocking the light from whatever is behind. Reflection nebulae are clouds of dust which are reflecting the light of a nearby star or stars. Planetary nebulae are shells of gas thrown out by some stars near the end of their lives. Our Sun will probably ...
Unit 5 – Creating and Understanding Spectra
... The Amazing Reality: a Giant Star Since it gives off so little light per square centimeter, this means that Betelgeuse must be huge, with an enormous surface area. It is a RED GIANT star, big enough to swallow up much of the Solar System. (Our Sun will become a red giant at the end of its life, swa ...
... The Amazing Reality: a Giant Star Since it gives off so little light per square centimeter, this means that Betelgeuse must be huge, with an enormous surface area. It is a RED GIANT star, big enough to swallow up much of the Solar System. (Our Sun will become a red giant at the end of its life, swa ...
Astrophotography
Astrophotography is a specialized type of photography for recording images of astronomical objects and large areas of the night sky. The first photograph of an astronomical object (the Moon) was taken in 1840, but it was not until the late 19th century that advances in technology allowed for detailed stellar photography. Besides being able to record the details of extended objects such as the Moon, Sun, and planets, astrophotography has the ability to image objects invisible to the human eye such as dim stars, nebulae, and galaxies. This is done by long time exposure since both film and digital cameras can accumulate and sum light photons over these long periods of time. Photography revolutionized the field of professional astronomical research, with long time exposures recording hundreds of thousands of new stars and nebulae that were invisible to the human eye, leading to specialized and ever larger optical telescopes that were essentially big cameras designed to collect light to be recorded on film. Direct astrophotography had an early role in sky surveys and star classification but over time it has given way to more sophisticated equipment and techniques designed for specific fields of scientific research, with film (and later astronomical CCD cameras) becoming just one of many forms of sensor.Astrophotography is a large sub-discipline in amateur astronomy where it is usually used to record aesthetically pleasing images, rather than for scientific research, with a whole range of equipment and techniques dedicated to the activity.