The Secular and Rotational Brightness Variations of Neptune
... described by Hall and Genet (1988). (Extinction and color transformation are described later in this section.) Some of the magnitudes reported in the earlier papers lacked color transformations but all the data analyzed here have been transformed. Formal errors are not available for these observati ...
... described by Hall and Genet (1988). (Extinction and color transformation are described later in this section.) Some of the magnitudes reported in the earlier papers lacked color transformations but all the data analyzed here have been transformed. Formal errors are not available for these observati ...
114EQ-AR
... Perform the first part of this procedure during the daytime and the last step at night. 1. Point the telescope at an easy-to-find land object such as the top of a telephone pole or a distant mountain or tower. Look through the eyepiece and turn the focuser knob (31) until the image is sharply focuse ...
... Perform the first part of this procedure during the daytime and the last step at night. 1. Point the telescope at an easy-to-find land object such as the top of a telephone pole or a distant mountain or tower. Look through the eyepiece and turn the focuser knob (31) until the image is sharply focuse ...
Slide 1
... The earth’s orbit is an ellipse. Sometimes we’re closer so the sun appears larger. Sometimes we’re farther away so the sun appears smaller. ...
... The earth’s orbit is an ellipse. Sometimes we’re closer so the sun appears larger. Sometimes we’re farther away so the sun appears smaller. ...
New brown dwarfs and giant planets
... ~50% trig/50% photo parallaxes Proper motions for all (U, V, W) velocities ...
... ~50% trig/50% photo parallaxes Proper motions for all (U, V, W) velocities ...
Instruction Manual #11007 / #11008 / #11009 ®
... the top and on the right (when looking though the finder) of the finder bracket and a spring loaded pivot screw (located on the left side of the bracket). This allows you to turn the top adjustment screw to move the finderscope up and down, and turn the right adjustment screw to move the finderscope ...
... the top and on the right (when looking though the finder) of the finder bracket and a spring loaded pivot screw (located on the left side of the bracket). This allows you to turn the top adjustment screw to move the finderscope up and down, and turn the right adjustment screw to move the finderscope ...
The CCD Photometric Calibration Cookbook
... independent of each other and you can use just the ones appropriate for your purposes. It is also worth noting that astronomical photometry is a diverse subject. There are many different ways of making and reducing photometric observations. Observations can be made for very different types of progra ...
... independent of each other and you can use just the ones appropriate for your purposes. It is also worth noting that astronomical photometry is a diverse subject. There are many different ways of making and reducing photometric observations. Observations can be made for very different types of progra ...
Suppose you tried to determine where we are in the galaxy by
... mass of the galaxy. b) True, the Milky Way's rotation curve stops increasing well before the orbit of the Sun, indicating that the majority of the Milky Way's mass lies within the Sun's orbit. c) False, the Milky Way's rotation curve remains flat well beyond the orbit of the Sun, indicating that t ...
... mass of the galaxy. b) True, the Milky Way's rotation curve stops increasing well before the orbit of the Sun, indicating that the majority of the Milky Way's mass lies within the Sun's orbit. c) False, the Milky Way's rotation curve remains flat well beyond the orbit of the Sun, indicating that t ...
Confirmation of Hostless Type Ia Supernovae Using Hubble Space
... We present deep Hubble Space Telescope imaging at the locations of four, potentially hostless, long-faded Type Ia supernovae (SNe Ia) in low-redshift, rich galaxy clusters that were identified in the Multi-Epoch Nearby Cluster Survey. Assuming a steep faint-end slope for the galaxy cluster luminosit ...
... We present deep Hubble Space Telescope imaging at the locations of four, potentially hostless, long-faded Type Ia supernovae (SNe Ia) in low-redshift, rich galaxy clusters that were identified in the Multi-Epoch Nearby Cluster Survey. Assuming a steep faint-end slope for the galaxy cluster luminosit ...
Variations in Integrated Galactic Initial Mass Functions due to
... (IGIMF) that is, at the high mass end, steeper than the IMF. The universality of the IMF is still an often debated topic. It is as yet not clear whether the IMF in all Galactic star clusters is the same, whether or not the field stars in the Milky Way follow the same mass distribution as cluster sta ...
... (IGIMF) that is, at the high mass end, steeper than the IMF. The universality of the IMF is still an often debated topic. It is as yet not clear whether the IMF in all Galactic star clusters is the same, whether or not the field stars in the Milky Way follow the same mass distribution as cluster sta ...
A Determination of the Deflection of Light by the Sun`s Gravitational
... theory. This leads to an apparent displacement of a star at the limb amounting to 1"^75outwards. In either of the last two cases the displacementis inversely proportionalto the distance of the star from the sun's centre, the displacement under (3) being just double the displacement under (2). It may ...
... theory. This leads to an apparent displacement of a star at the limb amounting to 1"^75outwards. In either of the last two cases the displacementis inversely proportionalto the distance of the star from the sun's centre, the displacement under (3) being just double the displacement under (2). It may ...
Altair -- the ``hottest`` magnetically active star in X-rays
... (Schmitt 1997). Since located at a distance of only 5.1 pc, Altair is a unique target for studying the X-ray properties of late A-type stars in greater detail. Altair is known to be a very fast rotator from spectroscopic measurements. Its rotational velocity has been determined to V sin i ≈ 190–250 ...
... (Schmitt 1997). Since located at a distance of only 5.1 pc, Altair is a unique target for studying the X-ray properties of late A-type stars in greater detail. Altair is known to be a very fast rotator from spectroscopic measurements. Its rotational velocity has been determined to V sin i ≈ 190–250 ...
ALMA How does it work and how to use it
... • The 66 antennas and electronics working with a precision of one picosecond (10-12s). • The signals from the different antennas must be combined in a way that the path followed from each antenna until it is combined at the central computer (the correlator) must be known with an accuracy equal to th ...
... • The 66 antennas and electronics working with a precision of one picosecond (10-12s). • The signals from the different antennas must be combined in a way that the path followed from each antenna until it is combined at the central computer (the correlator) must be known with an accuracy equal to th ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.