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Dec - National Capital Astronomers
... actually discovered in 2015 by the Kepler Spacecraft (NASA) as part of the K2 Mission (Kepler’s “Second Light”). K2-3d is 1.5 times Earth’s size, orbits its star in 45 days and is 150 light years away. Recently, while the planet was in transit across its sun, scientists from the National Astronomica ...
... actually discovered in 2015 by the Kepler Spacecraft (NASA) as part of the K2 Mission (Kepler’s “Second Light”). K2-3d is 1.5 times Earth’s size, orbits its star in 45 days and is 150 light years away. Recently, while the planet was in transit across its sun, scientists from the National Astronomica ...
“Breakthroughs” of the 20th Century
... to the realization that the Universe contained a multitude of galaxies and was expanding. Radio astronomy was introduced and the advent of the space age saw the astronomical wavelength range expand into the ultraviolet, X-ray and gamma-ray regions, as well as the infrared and millimetre. We also sta ...
... to the realization that the Universe contained a multitude of galaxies and was expanding. Radio astronomy was introduced and the advent of the space age saw the astronomical wavelength range expand into the ultraviolet, X-ray and gamma-ray regions, as well as the infrared and millimetre. We also sta ...
November - Hawaiian Astronomical Society
... telescope, sometimes just called Herschel, orbits the Sun about a million miles from the Earth. The meeting began with dinner at Karl’s house. Karl charred chorizo on the backyard grill while the airplanes dribbled into Dulles airport. Our colleagues arrived, jetlagged and yawning, from Germany, Swe ...
... telescope, sometimes just called Herschel, orbits the Sun about a million miles from the Earth. The meeting began with dinner at Karl’s house. Karl charred chorizo on the backyard grill while the airplanes dribbled into Dulles airport. Our colleagues arrived, jetlagged and yawning, from Germany, Swe ...
PDF - Department of Statistics
... off. The resulting “exposures” are very long: data will be read out continuously and we will only close the shutters when we wish to monitor another star field. Figure 3 shows the data-taking process at two different time-points. Figure 4 shows a section of a simulated zipper mode image. The alterna ...
... off. The resulting “exposures” are very long: data will be read out continuously and we will only close the shutters when we wish to monitor another star field. Figure 3 shows the data-taking process at two different time-points. Figure 4 shows a section of a simulated zipper mode image. The alterna ...
The Extragalactic Distance Database: Color–Magnitude Diagrams
... magnitude of a particular galaxy’s TRGB we are then able to calculate a distance modulus. The absolute magnitude of stars at the TRGB is MI ≈ −4.0 with only a weak dependence on age and metallicity in this wavelength range. Rizzi et al. (2007) present a zero-point calibration that is adjusted for me ...
... magnitude of a particular galaxy’s TRGB we are then able to calculate a distance modulus. The absolute magnitude of stars at the TRGB is MI ≈ −4.0 with only a weak dependence on age and metallicity in this wavelength range. Rizzi et al. (2007) present a zero-point calibration that is adjusted for me ...
Photons
... Fig. 3. The filter sets used in the present work. From top to bottom, we show the filter+detector transmission curves S λ for the systems: (1) HST/NICMOS, (2) HST/WFPC2, (3) Washington, (4) ESO/EMMI, (5) ESO/WFI U BVRIZ + ESO/SOFI JHK, and (6) Johnson-CousinsGlass. All references are given in Sect. ...
... Fig. 3. The filter sets used in the present work. From top to bottom, we show the filter+detector transmission curves S λ for the systems: (1) HST/NICMOS, (2) HST/WFPC2, (3) Washington, (4) ESO/EMMI, (5) ESO/WFI U BVRIZ + ESO/SOFI JHK, and (6) Johnson-CousinsGlass. All references are given in Sect. ...
Society News - Bristol Astronomical Society
... diameter of 13 arcminutes, it is an easy binocular object. M2 can be found about 4.5 degrees north of beta (β) Aquarii. M72 is another globular cluster, it is much fainter at magnitude +9.3 and with a diameter of 6 arcseconds its much trickier for observers with small instruments. M72 can be found j ...
... diameter of 13 arcminutes, it is an easy binocular object. M2 can be found about 4.5 degrees north of beta (β) Aquarii. M72 is another globular cluster, it is much fainter at magnitude +9.3 and with a diameter of 6 arcseconds its much trickier for observers with small instruments. M72 can be found j ...
4-H MOTTO
... Light is one of the most important aspects of astronomy. Everything that we can see in the night sky, whether it is a star, a planet or a galaxy, emits light. If an object did not emit light then we would not know it was there. Objects such as stars, galaxies and nebulae generate their own light whe ...
... Light is one of the most important aspects of astronomy. Everything that we can see in the night sky, whether it is a star, a planet or a galaxy, emits light. If an object did not emit light then we would not know it was there. Objects such as stars, galaxies and nebulae generate their own light whe ...
May 2017 - Bays Mountain Park
... overall, behind Hydra. Virgo is easily found through its brightest star, Spica. There is also an abundance of deep-sky objects in this constellation. Some of them include: M104 (also known as the Sombrero Galaxy), M49, M58, M59, M60, M61, M84, M86, M87, M89, and M90. All of these are galaxies, eithe ...
... overall, behind Hydra. Virgo is easily found through its brightest star, Spica. There is also an abundance of deep-sky objects in this constellation. Some of them include: M104 (also known as the Sombrero Galaxy), M49, M58, M59, M60, M61, M84, M86, M87, M89, and M90. All of these are galaxies, eithe ...
Astrophotography
![](https://commons.wikimedia.org/wiki/Special:FilePath/Orion_Belt.jpg?width=300)
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.