October 2011 - Newbury Astronomical Society
... The dark stripes, which are on the order of a few metres wide and several hundred metres long, were identified on several steep equator-facing slopes in the middle latitudes of the red planet's southern hemisphere. The features are different to the much wider gullies already seen on many cold, pole- ...
... The dark stripes, which are on the order of a few metres wide and several hundred metres long, were identified on several steep equator-facing slopes in the middle latitudes of the red planet's southern hemisphere. The features are different to the much wider gullies already seen on many cold, pole- ...
How to Directly Image a Habitable Planet Around Alpha Centauri
... do not move on Keplerian orbits. Thus, as long as exozodi does not have clumps brighter than ~10 -10 contrast that move on Keplerian orbits, it will be filtered out along with stellar noise. (The possible existence of zodi at 10-8 contrast also reduces the benefit in designing an instrument capable ...
... do not move on Keplerian orbits. Thus, as long as exozodi does not have clumps brighter than ~10 -10 contrast that move on Keplerian orbits, it will be filtered out along with stellar noise. (The possible existence of zodi at 10-8 contrast also reduces the benefit in designing an instrument capable ...
Training
... Planetary Camera 2 (WFPC2) through three different color filters. Based on their discovery and careful brightness measurements of variable stars in NGC 4414, the Key Project astronomers were able to make an accurate determination of the distance to the galaxy. The resulting distance to NGC 4414, 19. ...
... Planetary Camera 2 (WFPC2) through three different color filters. Based on their discovery and careful brightness measurements of variable stars in NGC 4414, the Key Project astronomers were able to make an accurate determination of the distance to the galaxy. The resulting distance to NGC 4414, 19. ...
Lecture
... • that the telescope should have minimum thermal currents along the optical path within the telescope tube, • the exposure time should be as short as possible, to ‘freeze’ the image otherwise disturbed by the seeing fluctuations, • 2-dimensional and multi-waveband observations are generally required, ...
... • that the telescope should have minimum thermal currents along the optical path within the telescope tube, • the exposure time should be as short as possible, to ‘freeze’ the image otherwise disturbed by the seeing fluctuations, • 2-dimensional and multi-waveband observations are generally required, ...
PH607lec10
... star formation within a massive, compact gas accretion disk around the central black-hole. It is interesting to note that most of these 100 young, massive stars seem to be concentrated within one or two disks, rather than randomly distributed within the central parsec. This observation however does ...
... star formation within a massive, compact gas accretion disk around the central black-hole. It is interesting to note that most of these 100 young, massive stars seem to be concentrated within one or two disks, rather than randomly distributed within the central parsec. This observation however does ...
or view
... The formation of the Sun had a dramatic effect on the temperatures across the solar nebula, introducing a temperature range that stretched from about 2000K near the Sun to less than 50K at the outer regions. The heat in the inner Solar System only allowed materials with high condensation temperature ...
... The formation of the Sun had a dramatic effect on the temperatures across the solar nebula, introducing a temperature range that stretched from about 2000K near the Sun to less than 50K at the outer regions. The heat in the inner Solar System only allowed materials with high condensation temperature ...
Week 5 File
... DiffracFon limited resoluFon and “astronomical seeing” The ability to resolve two objects that have small angular separaFon, θ, on the sky is not just a quesFon of choosing a telescope with an appropria ...
... DiffracFon limited resoluFon and “astronomical seeing” The ability to resolve two objects that have small angular separaFon, θ, on the sky is not just a quesFon of choosing a telescope with an appropria ...
Tour of the Universe
... center of a galactic bulge, there is a black hole. Other galaxies are elliptical in shape and are ovoid and spherical. These galaxies contain much less gas and dust than spiral galaxies and are thought to have been formed from collisions between spiral galaxies. Irregular galaxies are shapeless a ...
... center of a galactic bulge, there is a black hole. Other galaxies are elliptical in shape and are ovoid and spherical. These galaxies contain much less gas and dust than spiral galaxies and are thought to have been formed from collisions between spiral galaxies. Irregular galaxies are shapeless a ...
Lookback Time in Our Everyday Lives
... Novas and supernovas are astronomical events that have been recorded down through history. The remnants of some of these are now seen as glowing nebulae. Below is a list of some of these events, when they were seen on Earth, and when they actually occurred (taking into account the light time to get ...
... Novas and supernovas are astronomical events that have been recorded down through history. The remnants of some of these are now seen as glowing nebulae. Below is a list of some of these events, when they were seen on Earth, and when they actually occurred (taking into account the light time to get ...
The Formation of Stars and Solar Systems
... the Sun was born about 4.5 billion years ago. • Because all the planets lie in the same plane and orbit the Sun in the same direction, astronomers believe that Earth and the other eight planets condensed out of a circumstellar disk similar to HH-34. • According to this theory, when the Sun ignited i ...
... the Sun was born about 4.5 billion years ago. • Because all the planets lie in the same plane and orbit the Sun in the same direction, astronomers believe that Earth and the other eight planets condensed out of a circumstellar disk similar to HH-34. • According to this theory, when the Sun ignited i ...
an all-sky extrasolar planet survey with multiple object, dispersed
... ASEPS visible-wavelength survey has the sensitivity to detect giant planets at Jupiter-like distances (5 AU) from parent stars with V < 11. The nearinfrared survey will focus on infrared-bright M stars and may lead to discoveries of super-Earth-mass planets (∼10 Earth masses) in the habitable zones ...
... ASEPS visible-wavelength survey has the sensitivity to detect giant planets at Jupiter-like distances (5 AU) from parent stars with V < 11. The nearinfrared survey will focus on infrared-bright M stars and may lead to discoveries of super-Earth-mass planets (∼10 Earth masses) in the habitable zones ...
Clinical Techniques for Prescribing Bioptic Telescope
... • If acuity is similar between the eyes or if I’m concerned about dominancy issues, I’ll consider the same powers in a binocular design • If contrast is an issue, I’m thinking about Galilean designs first • If acuity is between 20/100 and 20/300 I’m thinking 4x and 6x Keplerian designs, especially i ...
... • If acuity is similar between the eyes or if I’m concerned about dominancy issues, I’ll consider the same powers in a binocular design • If contrast is an issue, I’m thinking about Galilean designs first • If acuity is between 20/100 and 20/300 I’m thinking 4x and 6x Keplerian designs, especially i ...
Week 3 - OSU Astronomy
... – Dust clouds very concentrated to plane of our galaxy – Dust clouds completely block our view of center of our galaxy in ...
... – Dust clouds very concentrated to plane of our galaxy – Dust clouds completely block our view of center of our galaxy in ...
Stars & Cosmology
... Sun started hydrogen burning in its core more than 4.5 billion years ago on the main sequence (at point 1), and it will remain near that point on the diagram for several billion years more. As the hydrogen in the core is consumed, however, a short period of helium burning (point 2) will move the Sun ...
... Sun started hydrogen burning in its core more than 4.5 billion years ago on the main sequence (at point 1), and it will remain near that point on the diagram for several billion years more. As the hydrogen in the core is consumed, however, a short period of helium burning (point 2) will move the Sun ...
Multi-Coated Achromatic Lenses
... observable objects in deep-space and resolves extremely fine planetary detail as well: Jupiter’s cloud belts are seen as a web of intricate discontinuities; transits and shadow transits of Jupiter’s main satellites are observable; six of Saturn’s satellites may be seen in revolution about the planet ...
... observable objects in deep-space and resolves extremely fine planetary detail as well: Jupiter’s cloud belts are seen as a web of intricate discontinuities; transits and shadow transits of Jupiter’s main satellites are observable; six of Saturn’s satellites may be seen in revolution about the planet ...
Guide to Polar Alignment of a Meade LX200GPS Telescope
... to do for polar alignment. But if you were in St. Louis, Missouri, you would see Polaris by looking northward at an angle of about 39°. This angle is also known as latitude. Wherever you are in the Northern Hemisphere, the angle of declination at which you would see Polaris is also your latitude. No ...
... to do for polar alignment. But if you were in St. Louis, Missouri, you would see Polaris by looking northward at an angle of about 39°. This angle is also known as latitude. Wherever you are in the Northern Hemisphere, the angle of declination at which you would see Polaris is also your latitude. No ...
Notes for Unit 5
... Catholic Church responded by beginning secret files on him. He was also warned to watch his step. (Note that at the time, the heliocentric model was considered to be heretical, as it did not comply with various Biblical teachings.) -Galileo later published a book in which he stages a mock debate be ...
... Catholic Church responded by beginning secret files on him. He was also warned to watch his step. (Note that at the time, the heliocentric model was considered to be heretical, as it did not comply with various Biblical teachings.) -Galileo later published a book in which he stages a mock debate be ...
Volume 4 (Issue 3), March 2015
... clusters. Only around 50 stars are visible in a region about 12 light-years across, compared to other similar objects which can contain thousands of stars. ...
... clusters. Only around 50 stars are visible in a region about 12 light-years across, compared to other similar objects which can contain thousands of stars. ...
Introduction to Basic Stargazing Part II - Naples Free-Net
... It is a peculiarity of comets that no matter where the comet is headed, the tail always points away from the Sun. Comets can also have two tails, one is of mostly dust, the other gas. Meteors: Remember all that dust and dirt the comets give off? It does not disappear, but continues to orbit the Sun ...
... It is a peculiarity of comets that no matter where the comet is headed, the tail always points away from the Sun. Comets can also have two tails, one is of mostly dust, the other gas. Meteors: Remember all that dust and dirt the comets give off? It does not disappear, but continues to orbit the Sun ...
Astronomy 102, Spring 2003 Solutions to Review Problems
... d, the distance, in order to calculate L. For mass, if it’s a binary star, you can measure the period of the orbit without knowing the distance, but again to get the physical semi-major axis of the orbit from the angular separation of the two stars, you need to know the distance to the system. Prope ...
... d, the distance, in order to calculate L. For mass, if it’s a binary star, you can measure the period of the orbit without knowing the distance, but again to get the physical semi-major axis of the orbit from the angular separation of the two stars, you need to know the distance to the system. Prope ...
Seeing Through the Clouds of Venus
... • The sun gets ~6% more luminous every 1 billion years • As the sun gets brighter (hotter) with time, the region around the star where habitable planetary temperatures are possible gets pushed outward At a later Sme: Sun is brighter ...
... • The sun gets ~6% more luminous every 1 billion years • As the sun gets brighter (hotter) with time, the region around the star where habitable planetary temperatures are possible gets pushed outward At a later Sme: Sun is brighter ...
Spitzer Space Telescope
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space observatory launched in 2003. It is the fourth and final of the NASA Great Observatories program.The planned mission period was to be 2.5 years with a pre-launch expectation that the mission could extend to five or slightly more years until the onboard liquid helium supply was exhausted. This occurred on 15 May 2009. Without liquid helium to cool the telescope to the very low temperatures needed to operate, most of the instruments are no longer usable. However, the two shortest-wavelength modules of the IRAC camera are still operable with the same sensitivity as before the cryogen was exhausted, and will continue to be used in the Spitzer Warm Mission. All Spitzer data, from both the primary and warm phases, are archived at the Infrared Science Archive (IRSA).In keeping with NASA tradition, the telescope was renamed after its successful demonstration of operation, on 18 December 2003. Unlike most telescopes that are named after famous deceased astronomers by a board of scientists, the new name for SIRTF was obtained from a contest open to the general public.The contest led to the telescope being named in honor of astronomer Lyman Spitzer, who had promoted the concept of space telescopes in the 1940s. Spitzer wrote a 1946 report for RAND Corporation describing the advantages of an extraterrestrial observatory and how it could be realized with available or upcoming technology. He has been cited for his pioneering contributions to rocketry and astronomy, as well as ""his vision and leadership in articulating the advantages and benefits to be realized from the Space Telescope Program.""The US$800 million Spitzer was launched from Cape Canaveral Air Force Station, on a Delta II 7920H ELV rocket, Monday, 25 August 2003 at 13:35:39 UTC-5 (EDT).It follows a heliocentric instead of geocentric orbit, trailing and drifting away from Earth's orbit at approximately 0.1 astronomical unit per year (a so-called ""earth-trailing"" orbit). The primary mirror is 85 centimeters (33 in) in diameter, f/12, made of beryllium and is cooled to 5.5 K (−449.77 °F). The satellite contains three instruments that allow it to perform astronomical imaging and photometry from 3 to 180 micrometers, spectroscopy from 5 to 40 micrometers, and spectrophotometry from 5 to 100 micrometers.