the printable Observing Olympics Object Info Sheet in pdf
... nebula has been expanding at a constant rate of 10 milli-arcseconds a year, then it would take 1000 ± 260 years to reach a diameter of 20 arcseconds. This may be an upper limit to the age, because ejected material will be slowed when it encounters material ejected from the star at earlier stages of ...
... nebula has been expanding at a constant rate of 10 milli-arcseconds a year, then it would take 1000 ± 260 years to reach a diameter of 20 arcseconds. This may be an upper limit to the age, because ejected material will be slowed when it encounters material ejected from the star at earlier stages of ...
F P US R
... in ground-based astronomy during the coming decade. To achieve this goal, we must support the development of pathfinder telescopes for ALMA science, especially those outfitted with large format focal plane arrays, and we must provide grant support for ALMA users. Goal 3: Develop technologies for the ...
... in ground-based astronomy during the coming decade. To achieve this goal, we must support the development of pathfinder telescopes for ALMA science, especially those outfitted with large format focal plane arrays, and we must provide grant support for ALMA users. Goal 3: Develop technologies for the ...
The magnitude scale, parallax, the parsec, and Cepheid distances
... – ~0.05" (d = 20 pc) with ground-‐based telescopes – ~0.005" (d = 200 pc) with satellites such as Hipparcos (1997) – ~0.001” with GAIA due for launch in 2013 by ESA ...
... – ~0.05" (d = 20 pc) with ground-‐based telescopes – ~0.005" (d = 200 pc) with satellites such as Hipparcos (1997) – ~0.001” with GAIA due for launch in 2013 by ESA ...
Cuesta College Eclipsing Binary Project Briefing
... around our star, the Sun. During this process, the larger planets exert a significant gravitational tug on the Sun to the point where our Sun changes its position, dominated by the affect of Jupiter, relative to Earth by about 5 seconds, light-travel time, over the course of Jupiter’s orbital period ...
... around our star, the Sun. During this process, the larger planets exert a significant gravitational tug on the Sun to the point where our Sun changes its position, dominated by the affect of Jupiter, relative to Earth by about 5 seconds, light-travel time, over the course of Jupiter’s orbital period ...
1 Do Massive Stars Trigger New Waves of Star Formation
... Stars form in the universe. We know this because we can see thousands of stars in the night sky, and we also orbit the most famous star, our Sun. However, the mechanisms that lead to their formation are still very much unknown. Astronomers also now believe that stars were the first large objects to ...
... Stars form in the universe. We know this because we can see thousands of stars in the night sky, and we also orbit the most famous star, our Sun. However, the mechanisms that lead to their formation are still very much unknown. Astronomers also now believe that stars were the first large objects to ...
The first cool rocky/icy exoplanet
... 2: Distribution of known extrasolar planets with mass and orbital axis or period (for a solar-mass host star) as well as the detection limits for various techniques: radial velocity/Doppler wobble (black) for velocities of 3 m s–1 and 1 m s–1; astrometry (green) for ground-based (Keck, VLTI) and spa ...
... 2: Distribution of known extrasolar planets with mass and orbital axis or period (for a solar-mass host star) as well as the detection limits for various techniques: radial velocity/Doppler wobble (black) for velocities of 3 m s–1 and 1 m s–1; astrometry (green) for ground-based (Keck, VLTI) and spa ...
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.