Galileo`s Observation of Neptune 1612-1613
... poetical terms. The variations of the visible phase of Venus and the correlations with the observed size of the planet in the eyepiece of Galileo’s telescope could only be explained if Venus orbited the Sun and not Earth. Later, he discovered sunspots12 (as had many other people by then) and began d ...
... poetical terms. The variations of the visible phase of Venus and the correlations with the observed size of the planet in the eyepiece of Galileo’s telescope could only be explained if Venus orbited the Sun and not Earth. Later, he discovered sunspots12 (as had many other people by then) and began d ...
Wide-field CCD imager for the 6.5m MMT telescope
... direct imaging system will be located at the Cassegrain focus of the telescope, behind a three-element refractive corrector. We will use an array of 8x4 three-edge-buttable CCDs, each with 2048x4096 pixels and two output ampli ers. This will provide a eld of view of 240240 . With a new packaging s ...
... direct imaging system will be located at the Cassegrain focus of the telescope, behind a three-element refractive corrector. We will use an array of 8x4 three-edge-buttable CCDs, each with 2048x4096 pixels and two output ampli ers. This will provide a eld of view of 240240 . With a new packaging s ...
PACS Test Facility Capabilities – Cryogenics and OGSE
... 2 flip mirrors for optical path selection (internal or ext. sources) 1 chopper wheel to chop between BB1 and BB2: fchop_max@5K=0.457Hz ...
... 2 flip mirrors for optical path selection (internal or ext. sources) 1 chopper wheel to chop between BB1 and BB2: fchop_max@5K=0.457Hz ...
120 Inch Telescope Aluminizing 2-7-06
... 1. Carefully remove cellophane from mirror surface. 2. Insulate mirror blank: A. Install 1 inch black masking tape to ¼ inch inside mirror surface of radius edge. B. One wrap of single face 2 inch masking tape. C. One wrap of double face 2 inch masking tape. D. One wrap of 3 inch corrugated cardboar ...
... 1. Carefully remove cellophane from mirror surface. 2. Insulate mirror blank: A. Install 1 inch black masking tape to ¼ inch inside mirror surface of radius edge. B. One wrap of single face 2 inch masking tape. C. One wrap of double face 2 inch masking tape. D. One wrap of 3 inch corrugated cardboar ...
The Ages of Astrophotography - Powered by Catchers of the Light
... The present volume tells of the ‘Ages of Astrophotography’ through the images themselves. It features 100 of the most important, iconic and famous of astronomical objects, instruments, surveys, telescopes and cameras. For each ‘object’ two images are depicted side by side, one taken by an early Pion ...
... The present volume tells of the ‘Ages of Astrophotography’ through the images themselves. It features 100 of the most important, iconic and famous of astronomical objects, instruments, surveys, telescopes and cameras. For each ‘object’ two images are depicted side by side, one taken by an early Pion ...
NEW DESIGN AND NEW CHALLENGE FOR SPACE LARGE
... Fig. 1 Madras deformable mirror Correction performances and stroke of the deformable mirror have been determined and validated by precise WFE measurement allowing to dispose of a consolidated tested available correction data base. System study has determined the mirror optical performance necessary ...
... Fig. 1 Madras deformable mirror Correction performances and stroke of the deformable mirror have been determined and validated by precise WFE measurement allowing to dispose of a consolidated tested available correction data base. System study has determined the mirror optical performance necessary ...
dew/frost prevention
... into a (hopefully) very clear dark sky, the equipment actually falls to a temperature below the air. This is because it is radiating heat into the air and the night sky above which, beyond the thin atmosphere, is outer space. Space is a few degrees above absolute zero and your telescope or camera in ...
... into a (hopefully) very clear dark sky, the equipment actually falls to a temperature below the air. This is because it is radiating heat into the air and the night sky above which, beyond the thin atmosphere, is outer space. Space is a few degrees above absolute zero and your telescope or camera in ...
3.2 Multi-Conjugate Adaptive Optics
... For full realization of their scientific potential, the Gemini telescopes will need high throughput from ultraviolet wavelengths longer than 0.3 microns through the visible and infrared bands to at least 30 microns. In order to achieve high performance across this very broad wavelength band, capabil ...
... For full realization of their scientific potential, the Gemini telescopes will need high throughput from ultraviolet wavelengths longer than 0.3 microns through the visible and infrared bands to at least 30 microns. In order to achieve high performance across this very broad wavelength band, capabil ...
Manufacture of 8.4 m off-axis segments
... standard. For the time being we are setting a goal of measuring the absolute radius of curvature to an accuracy such that each segment could be bent to the nominal radius with the active supports. From Table 4, the allowed adjustment in focus is about 0.9 µm in the Zernike coefficient for surface er ...
... standard. For the time being we are setting a goal of measuring the absolute radius of curvature to an accuracy such that each segment could be bent to the nominal radius with the active supports. From Table 4, the allowed adjustment in focus is about 0.9 µm in the Zernike coefficient for surface er ...
VisionCare Ophthalmic Technologies, Inc. 14395 Saratoga Avenue
... When implanted in your eye, the intraocular telescope magnifies images and projects them onto a part of your retina that is healthy and can still see images. ARE YOU A CANDIDATE FOR THE INTRAOCULAR TELESCOPE? You are a candidate if you meet these criteria: ...
... When implanted in your eye, the intraocular telescope magnifies images and projects them onto a part of your retina that is healthy and can still see images. ARE YOU A CANDIDATE FOR THE INTRAOCULAR TELESCOPE? You are a candidate if you meet these criteria: ...
スライド タイトルなし - X-ray Astronomy Group at ISAS
... Spectrometer (XRS); the other modules (XRT-I) have X-ray Imaging Spectrometer (XIS) units at their focal planes. At the same time, the Hard X-ray Detector (HXD) measures highenergy (hard) X-rays. ...
... Spectrometer (XRS); the other modules (XRT-I) have X-ray Imaging Spectrometer (XIS) units at their focal planes. At the same time, the Hard X-ray Detector (HXD) measures highenergy (hard) X-rays. ...
RAL Space brochure - Science and Technology Facilities Council
... the interaction between electrically charged particles from the Sun and the Earth's magnetic field. The four Cluster spacecraft were launched in pairs on 16 July and 9 August 2000 and now orbit the Earth in formation. This unique set of multi-point measurements allows us to study, for the first time ...
... the interaction between electrically charged particles from the Sun and the Earth's magnetic field. The four Cluster spacecraft were launched in pairs on 16 July and 9 August 2000 and now orbit the Earth in formation. This unique set of multi-point measurements allows us to study, for the first time ...
SOFIA Engineering Meeting 12-May-2011
... Capitalize on GUPPI and new GBT spectrometer experience Can also use “off-the-shelf” off-the-shelf spectrometer from RPG or Omnisys as benchmark for costing and power consumption Rich Lacasse working on this ...
... Capitalize on GUPPI and new GBT spectrometer experience Can also use “off-the-shelf” off-the-shelf spectrometer from RPG or Omnisys as benchmark for costing and power consumption Rich Lacasse working on this ...
01 DS-114AT manual final.qxd
... The GO TO key also allows you to perform a "spiral search." A spiral search is useful when the telescope is commanded to go to an object, but that object is not visible in the eyepiece after the telescope finishes its search. (This sometimes occurs during the alignment procedure.) Press GO TO when t ...
... The GO TO key also allows you to perform a "spiral search." A spiral search is useful when the telescope is commanded to go to an object, but that object is not visible in the eyepiece after the telescope finishes its search. (This sometimes occurs during the alignment procedure.) Press GO TO when t ...
Astronomical Facts `n Stuff
... Guiding on steroids. In most A/O units a lens is moved in real time to correct for movements in the guide star utilising refraction. This differs from traditional guiding where corrections are sent to the mount over periods of ~0.5 to 5 seconds. At long focal lengths adaptive optics can be better th ...
... Guiding on steroids. In most A/O units a lens is moved in real time to correct for movements in the guide star utilising refraction. This differs from traditional guiding where corrections are sent to the mount over periods of ~0.5 to 5 seconds. At long focal lengths adaptive optics can be better th ...
TERMS USED IN MANIPULATING A TRANSIT VERNIER
... (i) Set up the theodolite at station point O and level it accurately with reference to the altitude bubble. (ii) Set the zero of vertical vernier exactly to the zero of the vertical circle clamp and tangent screw. (iii) Bring the bubble of the altitude level in the central position by using clip scr ...
... (i) Set up the theodolite at station point O and level it accurately with reference to the altitude bubble. (ii) Set the zero of vertical vernier exactly to the zero of the vertical circle clamp and tangent screw. (iii) Bring the bubble of the altitude level in the central position by using clip scr ...
Newtonian Telescope Collimation with the Astrosystems LightPipe
... possible if the skies are not overy turbulent and the optics are thermally equilibrated. This is a very sensitive test, if we tilt a f/6 mirror to shift the image in the focal plane by 1/100 inch, visually perceptible coma results. For example, if the collimation screws have 16 threads per inch, thi ...
... possible if the skies are not overy turbulent and the optics are thermally equilibrated. This is a very sensitive test, if we tilt a f/6 mirror to shift the image in the focal plane by 1/100 inch, visually perceptible coma results. For example, if the collimation screws have 16 threads per inch, thi ...
Skyscraper How to Color the Universe by Kim Arcand the
... will become visible to northern hemisphere stargazers. The comet’s dust and ion tails, as well as the coma, could still be very well developed after this close encounter. (Visit http://www.shadowandsubstance.com/ for a great animation showing the projected path of this comet through the inner solar ...
... will become visible to northern hemisphere stargazers. The comet’s dust and ion tails, as well as the coma, could still be very well developed after this close encounter. (Visit http://www.shadowandsubstance.com/ for a great animation showing the projected path of this comet through the inner solar ...
The Very precise Echelle SpectroPolarimeter on the Araki telescope
... phase holographic (VPH) grism (Ebizuka et al. 2011). Both instruments have multi-object spectropolarimetric modes, realized with multi-slit masks located on the focal plane of the telescope. However, because these multi-purpose spectropolarimeters must have polarization modulators in the central pos ...
... phase holographic (VPH) grism (Ebizuka et al. 2011). Both instruments have multi-object spectropolarimetric modes, realized with multi-slit masks located on the focal plane of the telescope. However, because these multi-purpose spectropolarimeters must have polarization modulators in the central pos ...
Filters and General Equipment for Astronomical Observing
... close encounter in 2003 and found that despite the low altitude of Mars from the UK during that apparition the filter worked well in bringing out these features and even hinted at other rocky features on the planet’s surface during periods of clear seeing. True, the orange filter above did work bett ...
... close encounter in 2003 and found that despite the low altitude of Mars from the UK during that apparition the filter worked well in bringing out these features and even hinted at other rocky features on the planet’s surface during periods of clear seeing. True, the orange filter above did work bett ...
ULTRA Optics - Composite Mirror Applications Inc.
... used to produce astronomical images in a Newtonian telescope and yielded quality optical images. Presented will be results of the fabrication of the 1m, f/3 parabolic primary mirror mandrel for the 1m ULTRA Telescope. Also presented will be lab test data and astronomical mages produced under the 16- ...
... used to produce astronomical images in a Newtonian telescope and yielded quality optical images. Presented will be results of the fabrication of the 1m, f/3 parabolic primary mirror mandrel for the 1m ULTRA Telescope. Also presented will be lab test data and astronomical mages produced under the 16- ...
3. Wavefront sensors - Caltech Optical Observatories
... The output focal ratio of the second relay shall be greater than f/45 to allow for the optical switchyard. 2.2 Architecture of the Design The proposed Keck NGAO architecture consists basically of two pupil relays in cascade, a wide field relay followed by a narrow field one. The wide field relay c ...
... The output focal ratio of the second relay shall be greater than f/45 to allow for the optical switchyard. 2.2 Architecture of the Design The proposed Keck NGAO architecture consists basically of two pupil relays in cascade, a wide field relay followed by a narrow field one. The wide field relay c ...
Interstellar Space
... Interstellar clouds are the start and end points of a star’s life. Dying stars release heavy elements back into interstellar space, which becomes richer and richer in heavy elements over time (its metallicity goes up) All the heavy elements in the Earth were made in stars, then spent time in interst ...
... Interstellar clouds are the start and end points of a star’s life. Dying stars release heavy elements back into interstellar space, which becomes richer and richer in heavy elements over time (its metallicity goes up) All the heavy elements in the Earth were made in stars, then spent time in interst ...
Interstellar Space Not as Empty as you Might Think
... Interstellar clouds are the start and end points of a star’s life. Dying stars release heavy elements back into interstellar space, which becomes richer and richer in heavy elements over time (its metallicity goes up) ...
... Interstellar clouds are the start and end points of a star’s life. Dying stars release heavy elements back into interstellar space, which becomes richer and richer in heavy elements over time (its metallicity goes up) ...
Interstellar Space Not as Empty as you Might Think
... Interstellar clouds are the start and end points of a star’s life. Dying stars release heavy elements back into interstellar space, which becomes richer and richer in heavy elements over time (its metallicity goes up) All the heavy elements in the Earth were made in stars, then spent time in interst ...
... Interstellar clouds are the start and end points of a star’s life. Dying stars release heavy elements back into interstellar space, which becomes richer and richer in heavy elements over time (its metallicity goes up) All the heavy elements in the Earth were made in stars, then spent time in interst ...
James Webb Space Telescope
The James Webb Space Telescope (JWST), previously known as Next Generation Space Telescope (NGST), is a space observatory under construction and scheduled to launch in October 2018. The JWST will offer unprecedented resolution and sensitivity from long-wavelength visible to the mid-infrared, and is a successor instrument to the Hubble Space Telescope and the Spitzer Space Telescope. The telescope features a segmented 6.5-meter (21 ft) diameter primary mirror and will be located near the Earth–Sun L2 point. A large sunshield will keep its mirror and four science instruments below 50 K (−220 °C; −370 °F).JWST's capabilities will enable a broad range of investigations across the fields of astronomy and cosmology. One particular goal involves observing some of the most distant objects in the Universe, beyond the reach of current ground and space based instruments. This includes the very first stars, the epoch of reionization, and the formation of the first galaxies. Another goal is understanding the formation of stars and planets. This will include imaging molecular clouds and star-forming clusters, studying the debris disks around stars, direct imaging of planets, and spectroscopic examination of planetary transits.In gestation since 1996, the project represents an international collaboration of about 17 countries led by NASA, and with significant contributions from the European Space Agency and the Canadian Space Agency. It is named after James E. Webb, the second administrator of NASA, who played an integral role in the Apollo program.The JWST has a history of major cost overruns and delays. The first realistic budget estimates were that the observatory would cost $1.6 billion and launch in 2011. NASA has now scheduled the telescope for a 2018 launch. In 2011, the United States House of Representatives voted to terminate funding, after about $3 billion had been spent and 75 percent of its hardware was in production. Funding was restored in compromise legislation with the US Senate, and spending on the program was capped at $8 billion. As of December 2014, the telescope remained on schedule and within budget, but at risk of further delays.