Concepts discussed Jargon and conventions
... | Photometry | Antenna temperature | Photometric calibration | Color index or magnitude difference ...
... | Photometry | Antenna temperature | Photometric calibration | Color index or magnitude difference ...
4. Top level requirements
... concentration in an even larger field of view by performing pseudo closed-loop SCAO corrections on a number (~ 10-20) of selected objects in the field. Minimum specifications are given in the Table below, with a goal 4 times higher. ...
... concentration in an even larger field of view by performing pseudo closed-loop SCAO corrections on a number (~ 10-20) of selected objects in the field. Minimum specifications are given in the Table below, with a goal 4 times higher. ...
The Night Sky
... August begins, Saturn, Mars, and Spica (the brightest star in Virgo) form a straight line on the sky in that order, from left to right, with Mars being the brightest of the three. The first few days of the month have these three celestial objects being nearly equally spaced from each other. As the m ...
... August begins, Saturn, Mars, and Spica (the brightest star in Virgo) form a straight line on the sky in that order, from left to right, with Mars being the brightest of the three. The first few days of the month have these three celestial objects being nearly equally spaced from each other. As the m ...
*************DST
... Telescope is the Universal Birefringent Filter, or UBF. (Lyot type filter with rotating crystal elements using quarter waveplates and linear polarizers to tune.) It can be tuned to look at any particular visible color in the Sun's spectrum. A picture can then be taken of that region of the sun. This ...
... Telescope is the Universal Birefringent Filter, or UBF. (Lyot type filter with rotating crystal elements using quarter waveplates and linear polarizers to tune.) It can be tuned to look at any particular visible color in the Sun's spectrum. A picture can then be taken of that region of the sun. This ...
Issue 104
... Article of the Month—Seeing Straight by John Gifford Aligning the elements of a telescope system, how and why. From where we stand the sky appears to make one full turn around the Earth every day. The fact that what we see is really the Earth turning beneath the sky makes no difference to how it loo ...
... Article of the Month—Seeing Straight by John Gifford Aligning the elements of a telescope system, how and why. From where we stand the sky appears to make one full turn around the Earth every day. The fact that what we see is really the Earth turning beneath the sky makes no difference to how it loo ...
RFO Yard Sale Inventory – as of May 29, 2013
... We also have two neglected optical test benches, one wood and one metal. They are somewhat buried in their current location, so it is difficult to access their exact size and condition. My best estimate is that they are about one foot wide and between six and eight feet long. Each is supported on a ...
... We also have two neglected optical test benches, one wood and one metal. They are somewhat buried in their current location, so it is difficult to access their exact size and condition. My best estimate is that they are about one foot wide and between six and eight feet long. Each is supported on a ...
Functional Fields of Bioptic: implications for driving
... • Keplerian Vs. Galilean • Vignetting • Ring scotoma • Image shift • Simulvision • Binocular fields • Central field loss • Adaptation ...
... • Keplerian Vs. Galilean • Vignetting • Ring scotoma • Image shift • Simulvision • Binocular fields • Central field loss • Adaptation ...
Mitchell et al. 2006 PNAS Models of Titan Cloud Activity with season
... • 15S, 250W contains a small cloud in in all images for 20 days. • Surface heating/methane injection at this location? • Great place for Cassini to look for potential cryovolcanism or surface changes due to methane rainout Schaller et al. Nature 2009 ...
... • 15S, 250W contains a small cloud in in all images for 20 days. • Surface heating/methane injection at this location? • Great place for Cassini to look for potential cryovolcanism or surface changes due to methane rainout Schaller et al. Nature 2009 ...
The Orion 190-mm Maksutov-Newtonian
... focal ratios around 9 to 10 – quite slow for photographic use. Although generally of high quality and capability, Maksutov-Newtonian reflectors are not as well known as other optical designs. But that may change rather quickly with Orion Telescopes & Binocular’s introduction of a 190-mm (7.5 inch) M ...
... focal ratios around 9 to 10 – quite slow for photographic use. Although generally of high quality and capability, Maksutov-Newtonian reflectors are not as well known as other optical designs. But that may change rather quickly with Orion Telescopes & Binocular’s introduction of a 190-mm (7.5 inch) M ...
CHAPTER 3: Light and Telescopes
... the information from two or more telescopes to create one image, radio telescopes can be linked together over large distances to overcome the limits of resolution for a single radio telescope. ...
... the information from two or more telescopes to create one image, radio telescopes can be linked together over large distances to overcome the limits of resolution for a single radio telescope. ...
06 SIG Page 81-96 Scopes
... The Myth about Telescope Magnification Magnification is the least important factor in choosing a telescope! But, unfortunately, the selling and marketing of many telescopes, especially those sold in department, chain or toy stores, has often been based on magnification. Technically, it is possible t ...
... The Myth about Telescope Magnification Magnification is the least important factor in choosing a telescope! But, unfortunately, the selling and marketing of many telescopes, especially those sold in department, chain or toy stores, has often been based on magnification. Technically, it is possible t ...
Basic equations and assumptions can be found here.
... thus N20 × 10−(s−20)/2.5 . The area of a pixel is the scale2 × binining2 (where the scale is in arcsec/pixel) and so S = N20 × 10−(s−20)/2.5 × scale2 × binning2 . The read-noise R is a value you measure in the lab (and at the telescope), and is typically ...
... thus N20 × 10−(s−20)/2.5 . The area of a pixel is the scale2 × binining2 (where the scale is in arcsec/pixel) and so S = N20 × 10−(s−20)/2.5 × scale2 × binning2 . The read-noise R is a value you measure in the lab (and at the telescope), and is typically ...
Gov Aker Telescope Operators Manual
... the first time. Since Saturn is double as far from the Sun than Jupiter, it receives only a quarter of the light. While it has almost the size of Jupiter, Saturn’s larger distance results in a smaller, fainter view in the eyepiece. We tend trying to compensate by increasing magnification, but this m ...
... the first time. Since Saturn is double as far from the Sun than Jupiter, it receives only a quarter of the light. While it has almost the size of Jupiter, Saturn’s larger distance results in a smaller, fainter view in the eyepiece. We tend trying to compensate by increasing magnification, but this m ...
Optical Design of Giant Telescopes for Space
... pushing existing technologies? It does not seem economically feasible to develop new launch capabilities for these programs, so we are fundamentally limited to payload masses of a few tons. There are two paths to take from NGST to get larger telescopes. The primary mirror could be made larger as lon ...
... pushing existing technologies? It does not seem economically feasible to develop new launch capabilities for these programs, so we are fundamentally limited to payload masses of a few tons. There are two paths to take from NGST to get larger telescopes. The primary mirror could be made larger as lon ...
User`s Manual for the 84cm and 1.5m Telescopes
... telescope is stopped down at the secondary to about 1.32m. The telescope often suffers from significant astigmatism. The telescope has an equatorial mount and can point to declinations between +59° 40' and -40° and hour angles between +5 and -5 hours. If the telescope is not perfectly balanced, it c ...
... telescope is stopped down at the secondary to about 1.32m. The telescope often suffers from significant astigmatism. The telescope has an equatorial mount and can point to declinations between +59° 40' and -40° and hour angles between +5 and -5 hours. If the telescope is not perfectly balanced, it c ...
Light Source Test at the Telescope Array Site
... source is 7.43◦C on 14 Oct. and 12.0◦C on 14 Oct.. The difference of the intensity of the photo-electrons be indicated that a part of the difference intensity will be come from the inverse dependence on the temperature at the light source. ...
... source is 7.43◦C on 14 Oct. and 12.0◦C on 14 Oct.. The difference of the intensity of the photo-electrons be indicated that a part of the difference intensity will be come from the inverse dependence on the temperature at the light source. ...
ASTR100 Class 01 - University of Maryland Astronomy
... Matter is made of atoms, which are made of protons, electrons, & neutrons. Matter and light interact: emission, absorption, transmission, reflection. ...
... Matter is made of atoms, which are made of protons, electrons, & neutrons. Matter and light interact: emission, absorption, transmission, reflection. ...
Vibration Isolation in Electro-Optical Spacecraft
... calculated to determine whether there is an effect on imaging. Typically, the PM is at a sufficiently high resonant frequency compared with the isolating struts that PM vibration is not an issue. The resonant frequency is given as the square root of the ratio of the effective stiffness to the effect ...
... calculated to determine whether there is an effect on imaging. Typically, the PM is at a sufficiently high resonant frequency compared with the isolating struts that PM vibration is not an issue. The resonant frequency is given as the square root of the ratio of the effective stiffness to the effect ...
Solar System
... (still at the SJU Observatory) using star charts. You should expect night lab material to appear on exams and in lecture. The home labs require you to make a series of observations over a couple of months. You must start your observations within the next four weeks; there is no reason you can’t star ...
... (still at the SJU Observatory) using star charts. You should expect night lab material to appear on exams and in lecture. The home labs require you to make a series of observations over a couple of months. You must start your observations within the next four weeks; there is no reason you can’t star ...