... In addition to functioning as the prime instrument, the WFPC2 can be used for parallel observations. ... The central portion of the OTA F/24 beam is intercepted by a steerable pick-off mirror attached to the WFPC2, and is diverted through an open entry port into the instrument. ... Then the light falls onto a shallow-angle, four-faceted pyramid located at the aberrated OTA focus, each face of the pyramid being a concave spherical surface. ... Figure 2.2: WFPC2 Optical Configuration. ...

Еще в разделе: (Показать все результаты (>18996) - www.stsci.edu/ )

• Aberration Correction
• WFC3 Instrument Handbook
• Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for

Static Fourier spectrometers are often used for spectral measurements of the ionosphere emissions. There are two main advantages of Fourier spectrometers (FS) - large geometric factor and high spectral resolution; these parameters are two orders better than for grating spectral instruments. ... In scanning Fourier spectrometer optical and electric modulation of signal is used to avoid this problem, for static Fourier spectrometer there are no such ways. ...

Еще в разделе: (Показать все результаты (>53) - space.univ.kiev.ua/ )

... The collecting area is increased by nesting concentric mirror pairs, all having the same focal length. ... Figure shows the largest optical element being ground at HDOS. ... X-ray testing demonstrated that the CXO mirrors are indeed the largest high-resolution X-ray optics ever made; the nominal effective area (based on the ground calibrations) is shown as a function of energy in the left panel of Figure , along with those of their Einstein and ROSAT predecessors. ...

Еще в разделе: (Показать все результаты (>313) - xray.sai.msu.ru/ )

• AXAF-Chandra
• The Transmission Gratings
• The Instruments

The ESO Very Large Telescope consists of an array of four 8-meter telescopes which can work independently or in combined mode. ... In such a mount the telescope tube moves around a horizontal axis called elevation axis. ... The telescope tube itself consists of a steel structure supporting at the bottom the primary mirror (M1) in its cell, and at the top the M2 Unit by means of metallic beams called "spiders". ... The VLT can operate in either Cassegrain, Nasmyth or Coud focus. ...

Еще в разделе: (Показать все результаты (>66445) - www.eso.org/ )

• ESO - 8th VLTI Summer School: High angular resolution in astrophysics: optical
• CRIRES - VLT High-Resolution IR Echelle Spectrometer
• ESO - Integration Cryo-vacuum

... ARC 3.5m | Instrument Summary . ... ARCES (Echelle) : the ARC Echelle spectrograph, a high resolution (R~31,500) echelle spectrograph that observes the entire wavelength range from 3200 е to 10000 in a single image on a 2048x2048 CCD. This instrument is permanently mounted at the NA1 port. ... In addition to the facility instruments, several visitor instruments have been used at the 3.5m, and some of these are available to the ARC observing community by contacting the instrument PIs: . ...

Еще в разделе: (Показать все результаты (>845) - www.apo.nmsu.edu/ )

• Mirror actuators
• SDSS Engineering Papers
• Instruments

Next: CCD Operation Up: Charge Coupled Devices (CCDs) Previous: Charge Coupled Devices (CCDs) . ... However it is only now that a number of important X-ray astronomical applications of CCDs have reached critical development stages, so that this is an appropriate time to review the application of space-borne CCD instruments to cosmic X-ray astronomy, and highlight the particular concerns which are being addressed for X-ray instruments, as distinct from optical applications. ...

Еще в разделе: (Показать все результаты (>11700) - xmm.vilspa.esa.es/ )

• Cross References to In-Flight Calibration Targets
• Spatial coordinate systems
• Publications on XMM

Telescope Tip-Tilt Secondary Mirror The tip-tilt secondary mirror on the ANU 2.3 m telescope · Measures and adjusts image position at 30 Hz · Corrects image blur produced by turbulence in the Earth's atmosphere · Both the tip-tilt secondary mirror and the 2.3 m telescope were designed and constructed by RSAA ...

Еще в разделе: (Показать все результаты (>1199) - www.mso.anu.edu.au/ )

• GSAOI Component Supplier Links Page
• Instrumentation Links.
• Gemini Near-Infrared Integral-Field Spectrograph (NIFS) IFU.

Next: VLT First Light Up: Front Cover Previous: Participants . VLT First Light . ... Image Quality of the VLT . ... Near IR Astronomy with the ESO VLT . Introduction and Overview . Infrared instruments for the VLT . Instrument Summary . ... Performance . ... CONICA: The high resolution near-infrared camera for the ESO VLT . Introduction . Design of Imaging Optics . Analyzing Optics . Cryo-mechanical Design . ...

Еще в разделе: (Показать все результаты (>236) - www.stecf.org/ )

• VLT First Light
• CONICA: The high resolution near-infrared camera for the ESO VLT
• No Title

At Arecibo we have a variety of optical instruments that we use to study terrestrial airglow emissions. ... As a complement to the airglow instrumentation we also maintain a set of optical instruments, called lidars, used for "active" remote sensing of the atmosphere. That is, we generate our own source signal using lasers and measure the characteristics of the light scattered back from the atmosphere. ... An operations manual for the Optical Laboratories is currently under major revision. ...

Еще в разделе: (Показать все результаты (>4058) - www.naic.edu/ )

• The AO Optical Laboratories National Astronomy and Ionosphere Center (Arecibo
• Technical Data for the Arecibo Airglow and Optical Instrumentation

The optical scheme of the instrument is sketched in Figure 1 , it is designed to match the F/20 focal ratio of the TIRGO telescope. We have, following the optical path, the window of the dewar, the order sorting filter (not in figure), a field lens, in Calcium Floride, and the slit, in the focal plane of the telescope. ... The resolving power is (for first order of grating) of about 600 in the center of J band and 950 in the center of the K band, using a slit of two pixel (3.46 arcsec). ...

Еще в разделе: (Показать все результаты (>7732) - www.arcetri.astro.it/ )

• Carlo Baffa
• Labir Instrument Page
• TRASP 3

... Orbiter . Payload of the Orbiter . ... the instruments . ... ORBITER . Index . Instrument . Mass (kg) . ARGUS . ... visible and IR mapping spectrometer . ... planetary IR Fourier spectrometer . ... mapping visible and thermal radiometer . ... mapping high-resolut. spectrophotometer . ... multichannel optical s spectrometer . ... quadrupole mass-spectrometer . ... fast omnidir. energy-mass ion analyzer . ... wave complex . ... platform for ARGUS instruments . ... MASS-MEM . ...

Еще в разделе: (Показать все результаты (>769) - www.cosmos.ru/ )

• Optico-electronic Instruments for the Phobos-Grunt Mission
• HYPERBOLOID Results Page
• High resolution IR-spectrometer

Beginning from the May of the 1997 we started to publish our daily solar radio observations at RATAN-600 radiotelescope. ... Periscope System: South Sector+Flat Mirror . ... It is possible to track a source by moving the secondary mirror along the arc-shaped railway tracks or to perform azimuthal 2D map synthesis . ... 1) It is possible to simultaneously carry out independent observing programs using individual sectors at various discrete azimuths an