Simbol-X: x-ray baffle for stray–light reduction. - IASF Palermo
... Contamination by stray–light is particularly severe for telescopes with large gaps between mirrors. If, because of the stray–light, too many photons from outside the nominal FoV arrive at the focal camera, we have a significant decrease of the sensitivity of the telescope, limiting its performance ex ...
... Contamination by stray–light is particularly severe for telescopes with large gaps between mirrors. If, because of the stray–light, too many photons from outside the nominal FoV arrive at the focal camera, we have a significant decrease of the sensitivity of the telescope, limiting its performance ex ...
Remote Pulsed Laser Raman Spectroscopy System for Detecting
... Vertical binning or summing of the signals in each column of pixels of the CCD was performed to produce single channel signal. The Raman spectrum is formed by plotting the binned signal versus channel or column numbers. To obtain Raman spectra in lighted or high background conditions, the signal-to- ...
... Vertical binning or summing of the signals in each column of pixels of the CCD was performed to produce single channel signal. The Raman spectrum is formed by plotting the binned signal versus channel or column numbers. To obtain Raman spectra in lighted or high background conditions, the signal-to- ...
Mirror Development for the Cherenkov Telescope Array
... The mirrors for the single-reflector CTA telescopes will be hexagonal in shape, with sizes of 1 − 2 m2 , well beyond the common size of 0.3 − 1 m2 of current instruments. IACTs are normally placed at altitudes of 1, 000 − 3, 000 m a.s.l. where significant temperature changes between day and night as ...
... The mirrors for the single-reflector CTA telescopes will be hexagonal in shape, with sizes of 1 − 2 m2 , well beyond the common size of 0.3 − 1 m2 of current instruments. IACTs are normally placed at altitudes of 1, 000 − 3, 000 m a.s.l. where significant temperature changes between day and night as ...
Lecture 5-Spatial resolution and field of view, sensitivity and
... • Fabrication errors are the differences between the design and the fabricated part. • These errors can be defined by their frequency across the part: – figure errors: low frequency undulations that can sometimes be corrected by focus compensation – mid-frequency errors: generally affect wavefront e ...
... • Fabrication errors are the differences between the design and the fabricated part. • These errors can be defined by their frequency across the part: – figure errors: low frequency undulations that can sometimes be corrected by focus compensation – mid-frequency errors: generally affect wavefront e ...
MS word document
... Prof Rebolo opened the meeting by welcoming the attendees and inviting modifications to the agenda. The agenda was adopted and is attached for reference. Prof Gilmore presented an overview of OPTICON, stressing its role of bringing together groups with common problems to develop solutions/opportunit ...
... Prof Rebolo opened the meeting by welcoming the attendees and inviting modifications to the agenda. The agenda was adopted and is attached for reference. Prof Gilmore presented an overview of OPTICON, stressing its role of bringing together groups with common problems to develop solutions/opportunit ...
PDF
... resolution (3000 for the PSPCs and 1.00 7 for the HRI) and similar quantum efficiencies. Unfortunately, like the Einstein microchannel plates, the ROSAT HRI had no spectral resolution, and although they had a factor of two improvement over the Einstein IPC, the PSPCs still only had a energy resoluti ...
... resolution (3000 for the PSPCs and 1.00 7 for the HRI) and similar quantum efficiencies. Unfortunately, like the Einstein microchannel plates, the ROSAT HRI had no spectral resolution, and although they had a factor of two improvement over the Einstein IPC, the PSPCs still only had a energy resoluti ...
Searching for HI emission from distant galaxies
... • Naively if one co-adds the HI emission signal from N galaxies, the SNR should improve by N½ – Redshift measurement errors lead to errors in aligning HI spectra – Unknown HI mass of each galaxy leads to non optimal weights ...
... • Naively if one co-adds the HI emission signal from N galaxies, the SNR should improve by N½ – Redshift measurement errors lead to errors in aligning HI spectra – Unknown HI mass of each galaxy leads to non optimal weights ...
Selection Criteria for LAEs at z=4.8
... through the NB711 narrow-band filter [ eff 7126Å, FWHM = 73 Å] attached on Suprime-Cam, Subaru telescope, we obtained 33 Lyman Alpha Emitters (LAEs). 8 of them are detected in mid-IR data obtained by IRAC camera on Spitzer Space Telescope (SST) toward GOODS-N and flanking field. The rest-frame UV ...
... through the NB711 narrow-band filter [ eff 7126Å, FWHM = 73 Å] attached on Suprime-Cam, Subaru telescope, we obtained 33 Lyman Alpha Emitters (LAEs). 8 of them are detected in mid-IR data obtained by IRAC camera on Spitzer Space Telescope (SST) toward GOODS-N and flanking field. The rest-frame UV ...
Using the Radial Velocity to Search for Orbiting Planets Around Mira
... Mira has a silicon monoxide gas present in the atmosphere. The silicon monoxide contributes to the spectral line emission, at a microwave frequency, from Mira that is referred to as a maser. The raw maser data were analyzed to become the velocity centroid data needed for the rest of this research pr ...
... Mira has a silicon monoxide gas present in the atmosphere. The silicon monoxide contributes to the spectral line emission, at a microwave frequency, from Mira that is referred to as a maser. The raw maser data were analyzed to become the velocity centroid data needed for the rest of this research pr ...
USEFUL TEXT ON THE RENAISSANCE
... mathematical analysis. In connecting physical space and real motion—which could be observed experimentally—with the ideal and uniform change of his neo-platonic, mathematical world, Galileo also serves to bridge the early stages of the scientific revolution in Europe—and figures like Copernicus and ...
... mathematical analysis. In connecting physical space and real motion—which could be observed experimentally—with the ideal and uniform change of his neo-platonic, mathematical world, Galileo also serves to bridge the early stages of the scientific revolution in Europe—and figures like Copernicus and ...
Adaptive Optics Nicholas Devaney GTC project, Instituto de
... • Besides the sky coverage, a major advantage is the stability of the system calibration – (roughly) constant guide star flux – constant configuration ...
... • Besides the sky coverage, a major advantage is the stability of the system calibration – (roughly) constant guide star flux – constant configuration ...
Shearer et al Observations of Fermi Pulsars 2009-10
... This programme was intended to carryout CCD imaging observations of pulsars detected by the Fermi telescope. These would then be followed by observations with one of three high time resolution cameras which would be able to make definitive observations on the basis of timing. Under this round of the ...
... This programme was intended to carryout CCD imaging observations of pulsars detected by the Fermi telescope. These would then be followed by observations with one of three high time resolution cameras which would be able to make definitive observations on the basis of timing. Under this round of the ...
Instrumentation progress at the Giant Magellan Telescope project
... The GMT instrumentation program has followed the usual progression for instrument development during the past 10 years, beginning with the run-up to the GMT Conceptual Design Review1 in 2006. That process was described in our previous SPIE report2. Briefly, early concepts were discussed within the G ...
... The GMT instrumentation program has followed the usual progression for instrument development during the past 10 years, beginning with the run-up to the GMT Conceptual Design Review1 in 2006. That process was described in our previous SPIE report2. Briefly, early concepts were discussed within the G ...
Black Hole in M83 - Astronomical Society of the Pacific
... Ultraluminous X-ray sources, or ULX’s, are loosely defined as “compact X-ray sources that are brighter than normally expected for typical Xray emitting mass-transferring binary stars. So ULXs represent an extreme variety of the X-ray binary star phenomenon. In physical units, individual sources with ...
... Ultraluminous X-ray sources, or ULX’s, are loosely defined as “compact X-ray sources that are brighter than normally expected for typical Xray emitting mass-transferring binary stars. So ULXs represent an extreme variety of the X-ray binary star phenomenon. In physical units, individual sources with ...
Protocol on Cooperation in Astrophysical Research in Spain
... establish in an observatory shall be the subject of an agreement between the IAC and the other User Institutions, with the prior consent of the PIAC (with regard to the siting of buildings, building plans and the protection of the environment) and of the CCI (with regard to those aspects which may a ...
... establish in an observatory shall be the subject of an agreement between the IAC and the other User Institutions, with the prior consent of the PIAC (with regard to the siting of buildings, building plans and the protection of the environment) and of the CCI (with regard to those aspects which may a ...
User`s Manual (Updated 9
... The WIYN Tip-Tilt Module is an optical and near-IR reimaging system that utilizes fast tip-tilt compensation and includes real-time focus sensing. The field of view for the WTTM is 3.84 4.69 arcminutes at a plate scale of 0.1125 arcseconds per 13.5m pixel. The WTTM is attached to the WIYN Instrum ...
... The WIYN Tip-Tilt Module is an optical and near-IR reimaging system that utilizes fast tip-tilt compensation and includes real-time focus sensing. The field of view for the WTTM is 3.84 4.69 arcminutes at a plate scale of 0.1125 arcseconds per 13.5m pixel. The WTTM is attached to the WIYN Instrum ...
Light & Telescopes
... (dishes) that are used to focus radio waves. Very sharp radio images are produced with arrays of radio telescopes linked together in a technique called interferometry. Earth’s atmosphere is fairly transparent to most visible light and radio waves, along with some infrared and ultraviolet radiati ...
... (dishes) that are used to focus radio waves. Very sharp radio images are produced with arrays of radio telescopes linked together in a technique called interferometry. Earth’s atmosphere is fairly transparent to most visible light and radio waves, along with some infrared and ultraviolet radiati ...
The Hubble Space Telescope
... For Teachers: Supplies standard-specific questions to assess students’ comprehension. Presents explicit instruction for using the gradual release of responsibility model to promote collaborative learning. Includes a flexible pacing guide to meet the needs of each individual ...
... For Teachers: Supplies standard-specific questions to assess students’ comprehension. Presents explicit instruction for using the gradual release of responsibility model to promote collaborative learning. Includes a flexible pacing guide to meet the needs of each individual ...
Towards the Intensity Interferometry Stellar Imaging System
... Figure 1: Considering two harmonic emitting points in the source, with slightly different frequencies, telescopes A and B being close together receive beats almost at the same time. This corresponds to a high degree of correlation. Telescopes A and C being further apart do not receive beats in phase ...
... Figure 1: Considering two harmonic emitting points in the source, with slightly different frequencies, telescopes A and B being close together receive beats almost at the same time. This corresponds to a high degree of correlation. Telescopes A and C being further apart do not receive beats in phase ...
400-nm driver
... Requirements: optical beam access, high-intensity in interaction region, and low loss ...
... Requirements: optical beam access, high-intensity in interaction region, and low loss ...
