Class 26: EXAM 2
... E) Telescopes can see farther without image distortion and can record more accurate colors. 3) Which of the following is not a good reason to place observatories on remote mountain tops? A) to reduce light pollution B) to be able to observe at radio wavelengths C) to reduce light absorption D) to re ...
... E) Telescopes can see farther without image distortion and can record more accurate colors. 3) Which of the following is not a good reason to place observatories on remote mountain tops? A) to reduce light pollution B) to be able to observe at radio wavelengths C) to reduce light absorption D) to re ...
Astro 10 Practice Test 1
... phases of the Moon. c. From the Earth’s point of view, we’re mostly looking at the dark side of Venus. d. No matter where Venus is on its epicycle, the dark side of Venus is too far away from us to be seen clearly, and that’s why it looks dark. 32. Imagine that you could change the model shown in th ...
... phases of the Moon. c. From the Earth’s point of view, we’re mostly looking at the dark side of Venus. d. No matter where Venus is on its epicycle, the dark side of Venus is too far away from us to be seen clearly, and that’s why it looks dark. 32. Imagine that you could change the model shown in th ...
Octobers Meeting - Tauranga Astronomical Society
... smooth site to put down on and they ended up with only about five seconds of fuel left. But fortune was on their side and all went well, except for one eventuality which no one had thought about – the clumsy space suits caught the switch on a circuit breaker relay while climbing out through the door ...
... smooth site to put down on and they ended up with only about five seconds of fuel left. But fortune was on their side and all went well, except for one eventuality which no one had thought about – the clumsy space suits caught the switch on a circuit breaker relay while climbing out through the door ...
Session Two - A Sidewalk Astronomer in Charlottetown
... difference is that a star is a point of light, whereas a galaxy has a larger apparent surface area. The entire luminosity of the object is summed over it's area. The magnitude is then the same as a point source like a star emitting the luminosity. Therefore, large objects appear dimmer than stars th ...
... difference is that a star is a point of light, whereas a galaxy has a larger apparent surface area. The entire luminosity of the object is summed over it's area. The magnitude is then the same as a point source like a star emitting the luminosity. Therefore, large objects appear dimmer than stars th ...
April News Letter - Boise Astronomical Society
... of hydrogen at a faster rate than the sun. As a result, Regulus shines 240 times brighter than our sun. If viewed from Regulus, our sun would be so dim that we could not see it without the aid of a telescope. However, Regulus is easily seen in town. Regulus has a faint companion star that orbits it ...
... of hydrogen at a faster rate than the sun. As a result, Regulus shines 240 times brighter than our sun. If viewed from Regulus, our sun would be so dim that we could not see it without the aid of a telescope. However, Regulus is easily seen in town. Regulus has a faint companion star that orbits it ...
The search for extraterrestrial intelligence has mostly revolved
... spans about 100 milliarcseconds.) The brighter exoplanet targets are those that are closer to their host stars or larger in diameter because they reflect more light. Thus, the brightest and most detectable civilizations in our team’s census will live on planets orbiting cooler suns that are nearby. ...
... spans about 100 milliarcseconds.) The brighter exoplanet targets are those that are closer to their host stars or larger in diameter because they reflect more light. Thus, the brightest and most detectable civilizations in our team’s census will live on planets orbiting cooler suns that are nearby. ...
Astro twopages
... or 300,000 km away and the pause is the travel time of the radio waves. The Sun is 8 light minutes away. If the Sun suddenly stopped producing energy, it will still take 8 minutes for the Earth to know it. Incidentally the sun is about 1 light second in radius as well. Pluto is the edge of the plane ...
... or 300,000 km away and the pause is the travel time of the radio waves. The Sun is 8 light minutes away. If the Sun suddenly stopped producing energy, it will still take 8 minutes for the Earth to know it. Incidentally the sun is about 1 light second in radius as well. Pluto is the edge of the plane ...
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.