104-cm Sampurnanand Telescope
... Fast photometer at ARIES (see Figure 3.4) is functional since last five years. This is a PMT based device and is capable of detecting light variation of 0.2 mmag in good sky conditions. This instrument is well suited for short period ( minutes) and small amplitude ( mmag) variability work for bright ...
... Fast photometer at ARIES (see Figure 3.4) is functional since last five years. This is a PMT based device and is capable of detecting light variation of 0.2 mmag in good sky conditions. This instrument is well suited for short period ( minutes) and small amplitude ( mmag) variability work for bright ...
About the Hubble Space Telescope
... the scientific capabilities of the observatory through advances in technology. Many of Hubble’s discoveries with these new instruments would have been impossible to ...
... the scientific capabilities of the observatory through advances in technology. Many of Hubble’s discoveries with these new instruments would have been impossible to ...
The Revolution in Telescope Aperture
... D/t of the primary mirrors to reduce the mass of the mirror, the supporting telescope and the surrounding structure. The availability of analytical models opened the way to understanding the detailed performance of these lighter mirrors and telescope structures and the active systems needed to suppo ...
... D/t of the primary mirrors to reduce the mass of the mirror, the supporting telescope and the surrounding structure. The availability of analytical models opened the way to understanding the detailed performance of these lighter mirrors and telescope structures and the active systems needed to suppo ...
An Expanded View of the Universe
... speed up again as the repulsive effects of dark energy have come to dominate the expansion of the Universe. The afterglow light seen by WMAP was emitted about 380 000 years after inflation and has traversed the Universe largely unimpeded since then. The conditions of earlier times are imprinted on t ...
... speed up again as the repulsive effects of dark energy have come to dominate the expansion of the Universe. The afterglow light seen by WMAP was emitted about 380 000 years after inflation and has traversed the Universe largely unimpeded since then. The conditions of earlier times are imprinted on t ...
R FIXED UNIVERSAL TELESCOPE
... reflectors”. He also mentioned that “this type (of telescope) is incomparably well adapted for the highest requirements of astronomical photography, and of astrophysical work with very large and elaborate accessory instruments”. Ritchey’s first designs of the fixed universal telescope were completed ...
... reflectors”. He also mentioned that “this type (of telescope) is incomparably well adapted for the highest requirements of astronomical photography, and of astrophysical work with very large and elaborate accessory instruments”. Ritchey’s first designs of the fixed universal telescope were completed ...
Recent modification on Lindgren Feed
... • Room Temperature Very Low Noise Amplifiers. - The cost of the large number of receivers required by arrays could be greatly reduced if LNA’S with sufficiently low noise could be realized at room temperature. Transistor device improvements may enable this. Current performance is around 17K noise or ...
... • Room Temperature Very Low Noise Amplifiers. - The cost of the large number of receivers required by arrays could be greatly reduced if LNA’S with sufficiently low noise could be realized at room temperature. Transistor device improvements may enable this. Current performance is around 17K noise or ...
- CUNY Academic Works
... early civilization gazed up at the sky in order to tell time, to aid in agriculture, to serve for navigational purposes, or to determine the timing of religious observances. In the 1970s the American archaeologist Alexander Marshack examined a 30,000 year old Paleolithic bone found in Drodogne, Fran ...
... early civilization gazed up at the sky in order to tell time, to aid in agriculture, to serve for navigational purposes, or to determine the timing of religious observances. In the 1970s the American archaeologist Alexander Marshack examined a 30,000 year old Paleolithic bone found in Drodogne, Fran ...
Deep Space
... Look up the latitude of your area in any geographical atlas. Loosen the Latitude Lock Knob (22) and set the latitude scale to the correct latitude for your area. Aim the Finderscope (1) at Polaris. You will probably notice that Polaris is not dead center in the Finderscope’s field of view. This is p ...
... Look up the latitude of your area in any geographical atlas. Loosen the Latitude Lock Knob (22) and set the latitude scale to the correct latitude for your area. Aim the Finderscope (1) at Polaris. You will probably notice that Polaris is not dead center in the Finderscope’s field of view. This is p ...
Combined temperature lidar for measurements in the troposphere
... signal discussed before15 are no longer necessary with the new filters. Another change to the previous setup was made for the water vapor Raman channel, which was employed to measure the water vapor mixing ratio with the Raman technique.22,23 We exchanged the broadband color filter, IFa, for a narro ...
... signal discussed before15 are no longer necessary with the new filters. Another change to the previous setup was made for the water vapor Raman channel, which was employed to measure the water vapor mixing ratio with the Raman technique.22,23 We exchanged the broadband color filter, IFa, for a narro ...
MVoronkovMasersAtMM - Australia Telescope Compact Array
... • I’d prefer to search for 44 GHz masers and/or 36 GHz with ATCA (in fact, we’re planning a follow-up of the 6.7 GHz MMB detections at 44 GHz with ATCA) • At 3mm, it is worth to include 95 or 84 GHz transitions, although they are usually weaker than their 7mm counterparts. ...
... • I’d prefer to search for 44 GHz masers and/or 36 GHz with ATCA (in fact, we’re planning a follow-up of the 6.7 GHz MMB detections at 44 GHz with ATCA) • At 3mm, it is worth to include 95 or 84 GHz transitions, although they are usually weaker than their 7mm counterparts. ...
Performance Improvement of a Flexible Telescope Through
... mechanical behavior of the telescope structure can be studied from thermal model calculations, which use as input a realistic thermal state of the environment [13]. The influence of wind on a telescope is investigated in a similar exploratory FBA using for the wind force distribution across the tele ...
... mechanical behavior of the telescope structure can be studied from thermal model calculations, which use as input a realistic thermal state of the environment [13]. The influence of wind on a telescope is investigated in a similar exploratory FBA using for the wind force distribution across the tele ...
Meade ETX-90 Student Guide
... o Re-tighten the horizontal lock. Do not over tighten the locks! Tighten them to firm grip only, so that the telescope does not move freely. o Press ENTER. WARNING: After this point, do not loosen the horizontal locks or move the telescope by any means other than the Autostar controller! Doing so wi ...
... o Re-tighten the horizontal lock. Do not over tighten the locks! Tighten them to firm grip only, so that the telescope does not move freely. o Press ENTER. WARNING: After this point, do not loosen the horizontal locks or move the telescope by any means other than the Autostar controller! Doing so wi ...
The Cosmos & the Bible
... The Solution to Olbers' Paradox • Analogous to question of how deep one must go into woods to see only tree trunks all around. • To have a dark sky, universe must not be deep enough to see only star surfaces in all directions. • Thus the universe is of finite age, or finite size, or average star den ...
... The Solution to Olbers' Paradox • Analogous to question of how deep one must go into woods to see only tree trunks all around. • To have a dark sky, universe must not be deep enough to see only star surfaces in all directions. • Thus the universe is of finite age, or finite size, or average star den ...
Light on Dark Matter with Weak Gravitational Lensing
... mass maps from weak lensing observations. The field of weak lensing is motivated by the observations made in the last decades showing that the visible matter represents only about 4-5% of the Universe, the rest being dark. The Universe is now thought to be mostly composed by an invisible, pressurele ...
... mass maps from weak lensing observations. The field of weak lensing is motivated by the observations made in the last decades showing that the visible matter represents only about 4-5% of the Universe, the rest being dark. The Universe is now thought to be mostly composed by an invisible, pressurele ...
ASTRONOMY PORTFOLIO 2009 Atacama Cosmology Telescope
... cosmology telescope could determine the origin of the universe. The six-metre diameter, off-axis, millimeter-wave cosmology (the study of the entire universe) telescope will be used to study cosmic microwave background radiation – the remnant heat left over from the ‘Big Bang' that still pervades th ...
... cosmology telescope could determine the origin of the universe. The six-metre diameter, off-axis, millimeter-wave cosmology (the study of the entire universe) telescope will be used to study cosmic microwave background radiation – the remnant heat left over from the ‘Big Bang' that still pervades th ...
Telescope Control Issues with TheSky and Telescopes That Use
... Software Bisque recommends using the LX200’s built-in two star alignment procedure for initializing the telescope. This procedure is easier than accurately setting the time, date, and location that is required with the one star alignment mode. Typically, this procedure achieves better synchronizatio ...
... Software Bisque recommends using the LX200’s built-in two star alignment procedure for initializing the telescope. This procedure is easier than accurately setting the time, date, and location that is required with the one star alignment mode. Typically, this procedure achieves better synchronizatio ...
Discoveries with the Green Bank Telescope
... Pulsars and other compact objects are unique tools for studying aspects of fundamental physics such as matter at its most dense, extreme magnetic fields, and gravity. With its wide sky coverage, excellent point source sensitivity, ability to track horizon-tohorizon, and low interference environment, ...
... Pulsars and other compact objects are unique tools for studying aspects of fundamental physics such as matter at its most dense, extreme magnetic fields, and gravity. With its wide sky coverage, excellent point source sensitivity, ability to track horizon-tohorizon, and low interference environment, ...
Cold galaxies at low and high z
... gravity, which on large scales turns gravity into a repulsive force (the ‘cosmological repulsion’) This extra term, denoted L, behaves like the energy density of the vacuum, hence ‘dark energy’ ...
... gravity, which on large scales turns gravity into a repulsive force (the ‘cosmological repulsion’) This extra term, denoted L, behaves like the energy density of the vacuum, hence ‘dark energy’ ...
Lecture 9, 9/30/99 - University of Rochester
... For example, the apparent similarities among many telescopes in the 2-5 meter diameter class are due to the common use of an arrangement of beams called the Serrurier truss. Another example is provided by the Keck and Hobby-Eberly 10-m telescopes; the space frame structures for these three telescope ...
... For example, the apparent similarities among many telescopes in the 2-5 meter diameter class are due to the common use of an arrangement of beams called the Serrurier truss. Another example is provided by the Keck and Hobby-Eberly 10-m telescopes; the space frame structures for these three telescope ...
The photometric system of the One
... 2012). The yearly average and standard deviation of seeing in the past six years were calculated and are shown as red dots in the left panel of Figure 2 (the standard deviation is represented by error bars). The seeing condition has been stable in the past six years. The small variation is probably ...
... 2012). The yearly average and standard deviation of seeing in the past six years were calculated and are shown as red dots in the left panel of Figure 2 (the standard deviation is represented by error bars). The seeing condition has been stable in the past six years. The small variation is probably ...
Inauguration Dossier - Gran Telescopio CANARIAS
... which a mask is use to create artificial “eclipses,” blocking out the light from a star. It is used to identify planets around very bright stars. CanariCam was designed and built by the University of Florida (United States). The second generation of instruments will feature two infrared devices. EMI ...
... which a mask is use to create artificial “eclipses,” blocking out the light from a star. It is used to identify planets around very bright stars. CanariCam was designed and built by the University of Florida (United States). The second generation of instruments will feature two infrared devices. EMI ...
The Danish 1.5 m Telescope in Operation!
... The optical characteristics of the telescope make it especially suitable for direct observations with photographic as weil as more advanced detectors. For sufficiently accurate guiding of long exposures an automatic guiding system is essential, particularly because the asymmetric mounting of our tel ...
... The optical characteristics of the telescope make it especially suitable for direct observations with photographic as weil as more advanced detectors. For sufficiently accurate guiding of long exposures an automatic guiding system is essential, particularly because the asymmetric mounting of our tel ...
Correcting Systematic Poalrization Effects in Keck LRISp
... 2013; Semel et al. 1993; Gehrels 1974). Dual beam instrumentation with beam swapping modulation techniques can cancels out several effects to first order. Depending on how the polarization spectra are computed, there are still second-order artifacts remaining from instabilities in time (seeing, point ...
... 2013; Semel et al. 1993; Gehrels 1974). Dual beam instrumentation with beam swapping modulation techniques can cancels out several effects to first order. Depending on how the polarization spectra are computed, there are still second-order artifacts remaining from instabilities in time (seeing, point ...