.pdf
... (1962) [4] using an apodized screen and later again by Marchal (1985) [5] employing shaped projections around the edges. Since then a number of proposals have been put forward employing apodized screens (Copi and Starkman (2000) [6]; Schultz et al. (2003) [7]) or, more recently, shaped occulters as ...
... (1962) [4] using an apodized screen and later again by Marchal (1985) [5] employing shaped projections around the edges. Since then a number of proposals have been put forward employing apodized screens (Copi and Starkman (2000) [6]; Schultz et al. (2003) [7]) or, more recently, shaped occulters as ...
User`s Manual for the 84cm and 1.5m Telescopes
... measuring the FWHM with imexam in IRAF. There are also focus macros in the CCD control software that may be useful for this task (if you are using the PMIS software; see the relevant manuals). In all likelihood, as the secondary passes through focus, the telescope's astigmatism will cause oval disto ...
... measuring the FWHM with imexam in IRAF. There are also focus macros in the CCD control software that may be useful for this task (if you are using the PMIS software; see the relevant manuals). In all likelihood, as the secondary passes through focus, the telescope's astigmatism will cause oval disto ...
Aryabhatta Research Institute of Observational Sciences
... The observational and support facilities available at ARIES are described in detail by Sagar (1999b) and Sinha (2005). Briefly, the Institute which started with a 25-cm refractor in 1955, installed other four telescopes namely 38-cm, 52-cm, 56-cm and 104-cm till 1972. The 104-cm Sampurnanand reflect ...
... The observational and support facilities available at ARIES are described in detail by Sagar (1999b) and Sinha (2005). Briefly, the Institute which started with a 25-cm refractor in 1955, installed other four telescopes namely 38-cm, 52-cm, 56-cm and 104-cm till 1972. The 104-cm Sampurnanand reflect ...
instruction manual
... In addition to increasing magnification, the benefits of using a Barlow lens include improved eye relief, and reduced spherical aberration in the eyepiece. For this reason, a Barlow plus a lens often outperform a single lens producing the same magnification. However, its greatest value may be that a ...
... In addition to increasing magnification, the benefits of using a Barlow lens include improved eye relief, and reduced spherical aberration in the eyepiece. For this reason, a Barlow plus a lens often outperform a single lens producing the same magnification. However, its greatest value may be that a ...
PACS FPU Optical System Design
... Optical Design – Spectrometers Changes in optical design for spectrometer since ISVR ...
... Optical Design – Spectrometers Changes in optical design for spectrometer since ISVR ...
The History of Infrared Spectroscopy
... light (Newton 1672), demonstrating that the colors were already present in the white light. Unfortunately, when a wide beam of light is shown through a prism, the resulting colors overlap and are smeared and Newton did not detect any detailed structure in the solar spectrum (Fraunhofer & Ames 1898). ...
... light (Newton 1672), demonstrating that the colors were already present in the white light. Unfortunately, when a wide beam of light is shown through a prism, the resulting colors overlap and are smeared and Newton did not detect any detailed structure in the solar spectrum (Fraunhofer & Ames 1898). ...
The Submillimeter Frontier: A Space Science Imperative
... relevant structures are very small, so interferometric baselines ranging up to ∼ 1 km are required. Here we present a program of development that can, by late in the next decade, open the era of galaxy formation to detailed study. The emission from stars from this era is redshifted into the near inf ...
... relevant structures are very small, so interferometric baselines ranging up to ∼ 1 km are required. Here we present a program of development that can, by late in the next decade, open the era of galaxy formation to detailed study. The emission from stars from this era is redshifted into the near inf ...
GROUND OPTICAL SIGNAL PROCESSING ARCHITECTURE FOR
... DARPA’s OrbitOutlook aims to augment the performance of the Space Surveillance Network’s Space Situational Awareness (SSA) by adding more data more often from more diverse sources to increase Space Domain Awareness (SDA) and determine when satellites are at risk. OrbitOutlook also seeks to demonstra ...
... DARPA’s OrbitOutlook aims to augment the performance of the Space Surveillance Network’s Space Situational Awareness (SSA) by adding more data more often from more diverse sources to increase Space Domain Awareness (SDA) and determine when satellites are at risk. OrbitOutlook also seeks to demonstra ...
Institute for Astrophysical Research Seminar Series
... Frank Bash (University of Texas) The Hobby-Eberly Telescope, The South African Large Telescope, The Extremely Large Telescope and the Large Atacama Telescope ...
... Frank Bash (University of Texas) The Hobby-Eberly Telescope, The South African Large Telescope, The Extremely Large Telescope and the Large Atacama Telescope ...
IRTF Adaptive Optics System Review
... General Rules: 1)Design for absolute positioning (no adjmts) 2) Minimize interfaces => (more complex prts) • Limit Structure Deflection: FEA done; shows < 0.0001 inch max. deflection • Positional accuracy: Precision machined optical Mounts with doweled interfaces to Relay.Detail drawings are built w ...
... General Rules: 1)Design for absolute positioning (no adjmts) 2) Minimize interfaces => (more complex prts) • Limit Structure Deflection: FEA done; shows < 0.0001 inch max. deflection • Positional accuracy: Precision machined optical Mounts with doweled interfaces to Relay.Detail drawings are built w ...
to the Takahashi Epsilon
... has been checked and collimated at the factory by highly trained personnel. Please carefully check all parts and if there is any problem, immediately contact your local ...
... has been checked and collimated at the factory by highly trained personnel. Please carefully check all parts and if there is any problem, immediately contact your local ...
Introduction - Arecibo Observatory
... of full-Stokes continuum surveys using the cooled dual-channel receivers that will be built for use with the dish. Full-Stokes continuum surveys of the wider Galactic plane at high frequencies using HAAT would provide unique databases in a number of ways. Firstly, they would yield full spatial frequ ...
... of full-Stokes continuum surveys using the cooled dual-channel receivers that will be built for use with the dish. Full-Stokes continuum surveys of the wider Galactic plane at high frequencies using HAAT would provide unique databases in a number of ways. Firstly, they would yield full spatial frequ ...
The STIS CCD Spectroscopic Line Spread Functions
... modulation of 3% for the ratio of [O III] 5007 Å/4959 Å (Rubin et al. 2001). The ghost image (Figure 3) is of much greater concern. Direct images (Figure 4) show a faint double ring to one side of each bright star image. The position of these rings moves relative to the star image. R. S. Hill (63 ...
... modulation of 3% for the ratio of [O III] 5007 Å/4959 Å (Rubin et al. 2001). The ghost image (Figure 3) is of much greater concern. Direct images (Figure 4) show a faint double ring to one side of each bright star image. The position of these rings moves relative to the star image. R. S. Hill (63 ...
The Swift satellite lives up to its name, revealing cosmic
... The Swift satellite (Gehrels et al. 2004), launched into low-Earth orbit in November 2004, detects GRBs at a rate of ∼100 per year. It carries 3 instruments: a widefield gamma-ray telescope named BAT (Burst Alert Telescope), an X-ray telescope named XRT and an optical and ultraviolet telescope named ...
... The Swift satellite (Gehrels et al. 2004), launched into low-Earth orbit in November 2004, detects GRBs at a rate of ∼100 per year. It carries 3 instruments: a widefield gamma-ray telescope named BAT (Burst Alert Telescope), an X-ray telescope named XRT and an optical and ultraviolet telescope named ...
Invited Paper - Giant Magellan Telescope Organization
... the project staging plan. As is described in section 7, we expect to have the telescope mount erected within the enclosure on site before completion of all seven primary mirror segments. Commissioning activities can begin with a subset of the primary mirror segments. Alignment of the optical system ...
... the project staging plan. As is described in section 7, we expect to have the telescope mount erected within the enclosure on site before completion of all seven primary mirror segments. Commissioning activities can begin with a subset of the primary mirror segments. Alignment of the optical system ...
Lecture ppt - UCO/Lick Observatory
... • Different types of mirror have larger/smaller fitting error • Design of DMs balances stiffness and thickness of face sheet, stroke, strength of actuators, hysteresis, ability to polish mirror with high precision • Large DMs have been demonstrated (continuous face sheet, adaptive secondary) for ~ 1 ...
... • Different types of mirror have larger/smaller fitting error • Design of DMs balances stiffness and thickness of face sheet, stroke, strength of actuators, hysteresis, ability to polish mirror with high precision • Large DMs have been demonstrated (continuous face sheet, adaptive secondary) for ~ 1 ...
Keck NGAO Relay Design - Caltech Optical Observatories
... following OAP2 are removable dichroic pick-offs to the interferometer and acquisition cameras. It has been decided that in order to reduce cost and complexity of the mechanical design, and due to the smaller field and thus smaller K-mirror assembly, the previous 2-tier cascaded relay from the concep ...
... following OAP2 are removable dichroic pick-offs to the interferometer and acquisition cameras. It has been decided that in order to reduce cost and complexity of the mechanical design, and due to the smaller field and thus smaller K-mirror assembly, the previous 2-tier cascaded relay from the concep ...
leiden_duel_des_2008..
... •DES+Stage II combined = Factor 4.6 improvement over Stage II combined •Consistent with DETF range for Stage III DES-like project •Large uncertainties in systematics remain, but FoM is robust to uncertainties in any one probe, and we haven’t made use of all the information ...
... •DES+Stage II combined = Factor 4.6 improvement over Stage II combined •Consistent with DETF range for Stage III DES-like project •Large uncertainties in systematics remain, but FoM is robust to uncertainties in any one probe, and we haven’t made use of all the information ...
XMM-Newton
The XMM-Newton, also known as the X-ray Multi-Mirror Mission and the High Throughput X-ray Spectroscopy Mission, is an orbiting X-ray observatory launched by ESA in December 1999 on an Ariane 5 rocket. It is named in honor of Sir Isaac Newton. The telescope was placed in a very eccentric 48 hour elliptical orbit at 40°; at its apogee it is nearly 114,000 kilometres (71,000 mi) from Earth, while the perigee is only 7,000 kilometres (4,300 mi).