nexgUide User`s ManUal
... Higher value of the noise setting leads to a stronger filter effect, but it may affect NexGuide’s ability to detect fainter stars. Lower value allows the NexGuide to see fainter stars but tends to introduce noise, therefore, resulting in less accurate auto-guiding. The most suitable noise value depe ...
... Higher value of the noise setting leads to a stronger filter effect, but it may affect NexGuide’s ability to detect fainter stars. Lower value allows the NexGuide to see fainter stars but tends to introduce noise, therefore, resulting in less accurate auto-guiding. The most suitable noise value depe ...
Lecture 6 PPT
... d can remove wavefront aberrations • With a finite number of actuators, you can’t do a perfect fit to an arbitrary wavefront ...
... d can remove wavefront aberrations • With a finite number of actuators, you can’t do a perfect fit to an arbitrary wavefront ...
Instrumentation progress at the Giant Magellan Telescope project
... and schedule. One instrument team has completed its preliminary design and is currently beginning its final design (GCLEF, an optical 350-950 nm, high-resolution and precision radial velocity echelle spectrograph). A second instrument team is in its conceptual design phase (GMACS, an optical 350-950 ...
... and schedule. One instrument team has completed its preliminary design and is currently beginning its final design (GCLEF, an optical 350-950 nm, high-resolution and precision radial velocity echelle spectrograph). A second instrument team is in its conceptual design phase (GMACS, an optical 350-950 ...
ALMA Newsletter N°5
... the separation, one can obtain an estimate of the source size and position that is more accurate than a filled aperture of diameter D, since the positional accuracy depends on timing which can be very accurate, rather than mechanical stability which is subject to external conditions such as wind and ...
... the separation, one can obtain an estimate of the source size and position that is more accurate than a filled aperture of diameter D, since the positional accuracy depends on timing which can be very accurate, rather than mechanical stability which is subject to external conditions such as wind and ...
NexStar GT - Celestron
... arrow buttons on the hand control to position the telescope north and level. (See Astronomy Basics for help on finding ...
... arrow buttons on the hand control to position the telescope north and level. (See Astronomy Basics for help on finding ...
The Surveyors` Heliotrope
... a circular opening. The mirror had two motions so that it could be put in any position. Its center was coincident with the axis of the disks, in all positions. The mirror could be turned so as to throw a beam of light symmetrically through the forward disk, in which position the reflected rays would ...
... a circular opening. The mirror had two motions so that it could be put in any position. Its center was coincident with the axis of the disks, in all positions. The mirror could be turned so as to throw a beam of light symmetrically through the forward disk, in which position the reflected rays would ...
An Adaptive Secondary Mirror Demonstrator: Construction and
... Jun Ho Lee, David D. Walker, A. Peter Doel ...
... Jun Ho Lee, David D. Walker, A. Peter Doel ...
Celestron Dacl"fl"c ...the world`s leading manufacturer the Celestron
... and 80-inch effective focal length causes faint celestial objects to appear 500 times brighter than to the unaided eye and it offers a resolution capability of 1/2 arc second. Its useful magnification ...
... and 80-inch effective focal length causes faint celestial objects to appear 500 times brighter than to the unaided eye and it offers a resolution capability of 1/2 arc second. Its useful magnification ...
Why does Dream seem obsessed with weight?
... highly sensitive opto-mechanical systems. Dream’s CF is used for everything from the mirror mounts, to backplates, to the telescope’s main structure(s) and more. Isn’t this level of CTE matching overkill, considering telescopes have hardly changed in roughly 350 years (mirror-based) and carbon fiber ...
... highly sensitive opto-mechanical systems. Dream’s CF is used for everything from the mirror mounts, to backplates, to the telescope’s main structure(s) and more. Isn’t this level of CTE matching overkill, considering telescopes have hardly changed in roughly 350 years (mirror-based) and carbon fiber ...
Beyond the Hubble Space Telescope: Early
... be launched, with the expected wealth of date yet to be analyzed so “it is difficult but not premature to formulate a detailed concept of such a large-scale telescope for the ultraviolet, optical and infrared regions.” The report’s authors nevertheless extolled the increased performance of such an i ...
... be launched, with the expected wealth of date yet to be analyzed so “it is difficult but not premature to formulate a detailed concept of such a large-scale telescope for the ultraviolet, optical and infrared regions.” The report’s authors nevertheless extolled the increased performance of such an i ...
History of the Telescope
... As it is known, the effect of a telescope is not dependent on its length, but on the aperture of its object glass, so that with equal perfection that telescope, which has double the size of a comparable one, has twice the effect. The difficulties which are to be faced when making larger, equally go ...
... As it is known, the effect of a telescope is not dependent on its length, but on the aperture of its object glass, so that with equal perfection that telescope, which has double the size of a comparable one, has twice the effect. The difficulties which are to be faced when making larger, equally go ...
how to set out an angle with the theo020 theodolite
... Turn the horizontal alignment knob until the vertical crosshair is lined up with B. 15 Unlock the vertical clamp and rotate the telescope until the horizontal crosshair is near B. 16 Lock the vertical clamp 17 Turn the vertical alignment knob until the horizontal crosshair is exactly on B 18 Release ...
... Turn the horizontal alignment knob until the vertical crosshair is lined up with B. 15 Unlock the vertical clamp and rotate the telescope until the horizontal crosshair is near B. 16 Lock the vertical clamp 17 Turn the vertical alignment knob until the horizontal crosshair is exactly on B 18 Release ...
Observational Methods
... Observational Methods 11. Which of the following lists of the advantages of reflecting telescopes over refracting telescopes is FALSE? A. Reflectors don’t suffer from astigmatism, coma and spherical aberration. Y B. Glass can be chosen for its thermal properties rather than its optical properties. ...
... Observational Methods 11. Which of the following lists of the advantages of reflecting telescopes over refracting telescopes is FALSE? A. Reflectors don’t suffer from astigmatism, coma and spherical aberration. Y B. Glass can be chosen for its thermal properties rather than its optical properties. ...
ALTERNATIVE DESIGNS FOR SPACE X
... optics suggested for astronomical use. Despite to this fact, albeit some considerations and plans occurred, the astronomical X-ray telescopes flown so far on satellites mostly used the Wolter 1 type optics. Only few historical experiments on sounding rockets used K-B systems. Different situation is ...
... optics suggested for astronomical use. Despite to this fact, albeit some considerations and plans occurred, the astronomical X-ray telescopes flown so far on satellites mostly used the Wolter 1 type optics. Only few historical experiments on sounding rockets used K-B systems. Different situation is ...
Inter-scan Overheads for Sequences of Drifts with ALFA
... Inter-scan Overheads for Sequences of Drifts with ALFA M. Haynes, R. Giovanelli, B. Catinella, G.L. Hoffman, E. Momjian and M. Putman The A1963 Observing Team – 09 December 2004 This note is a complement to our previous memo on the use of the “Fixed Azimuth Drift” observing mode using ALFA ( http:// ...
... Inter-scan Overheads for Sequences of Drifts with ALFA M. Haynes, R. Giovanelli, B. Catinella, G.L. Hoffman, E. Momjian and M. Putman The A1963 Observing Team – 09 December 2004 This note is a complement to our previous memo on the use of the “Fixed Azimuth Drift” observing mode using ALFA ( http:// ...
Towards the Intensity Interferometry Stellar Imaging System
... Pre-main sequence stars are young stars that are contracting towards the main-sequence, but are powered only by gravitational collapse: core temperature and pressure are insufficient to ignite hydrogen fusion. Key questions relating to the physics of mass accretion and PMS evolution can be addressed ...
... Pre-main sequence stars are young stars that are contracting towards the main-sequence, but are powered only by gravitational collapse: core temperature and pressure are insufficient to ignite hydrogen fusion. Key questions relating to the physics of mass accretion and PMS evolution can be addressed ...
Miscellaeous features - JLab Tech Notes Home Page
... The wavelength range of the laser will be 1–14 µm. This range was chosen to allow for the use of ZnSe windows in the optical transport. The system should be designed so that nothing fundamentally forbids operation at longer wavelengths. The gain is optimized if the optical mode is wrapped tightly ar ...
... The wavelength range of the laser will be 1–14 µm. This range was chosen to allow for the use of ZnSe windows in the optical transport. The system should be designed so that nothing fundamentally forbids operation at longer wavelengths. The gain is optimized if the optical mode is wrapped tightly ar ...
Lowell Observer, Winter 2006, Issue 69
... New Horizons is NASA’s mission to Pluto and the Kuiper belt. The author is a member of the New Horizons science team and has previously described the mission in Lowell Observer Issue 54, back in 2002. A lot has happened since then. These are exciting times for New Horizons, now awaiting final approv ...
... New Horizons is NASA’s mission to Pluto and the Kuiper belt. The author is a member of the New Horizons science team and has previously described the mission in Lowell Observer Issue 54, back in 2002. A lot has happened since then. These are exciting times for New Horizons, now awaiting final approv ...
Paper 1 (pdf)
... Same telescope and grating optics but now a polarizing flat has been added. The flat is placed at the Brewster angle (45◦ ) to the incoming X-rays to null the reflectivity of p-polarized X-rays. The multilayer coating period varies with position along the x axis according to Eq. (1), tuned to reflec ...
... Same telescope and grating optics but now a polarizing flat has been added. The flat is placed at the Brewster angle (45◦ ) to the incoming X-rays to null the reflectivity of p-polarized X-rays. The multilayer coating period varies with position along the x axis according to Eq. (1), tuned to reflec ...
Lenses PPT
... Refracting telescopes are comprised of two convex lenses. The objective lens collects light from a distant source, converging it to a focus and forming a real, inverted image inside the telescope. The objective lens needs to be fairly large in order to have enough light-gathering power so that the f ...
... Refracting telescopes are comprised of two convex lenses. The objective lens collects light from a distant source, converging it to a focus and forming a real, inverted image inside the telescope. The objective lens needs to be fairly large in order to have enough light-gathering power so that the f ...
Optical telescope
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.There are three primary types of optical telescope: refractors, which use lenses (dioptrics) reflectors, which use mirrors (catoptrics) catadioptric telescopes, which combine lenses and mirrorsA telescope's light gathering power and ability to resolve small detail is directly related to the diameter (or aperture) of its objective (the primary lens or mirror that collects and focuses the light). The larger the objective, the more light the telescope collects and the finer detail it resolves.People use telescopes and binoculars for activities such as observational astronomy, ornithology, pilotage and reconnaissance, and watching sports or performance arts.