The Strehl ratio is a measure of the quality of optical image formation, originally proposed by Karl Strehl, after whom the term is named. Used variously...
9 KB (1,201 words) - 12:01, 1 June 2024
between M2, power-in-the-bucket, and Strehl ratio. The Strehl ratio, for example, has been defined as the ratio of the peak focal intensities in the aberrated...
38 KB (5,733 words) - 04:47, 5 December 2023
Wilhelm Andreas Strehl (April 30, 1864 – June 14, 1940) was a German physicist, mathematician, and writer. He is notable for the Strehl ratio, a widely used...
1 KB (89 words) - 22:27, 9 August 2023
largest monolithic, or non-segmented, mirror in an optical telescope. Strehl ratios of 60–90% in the infrared H band and 95% in the infrared M band have...
21 KB (2,123 words) - 19:28, 15 May 2024
guide star (bright) to deliver diffraction limited, high Strehl ratio images (>75 % Strehl in the K band) at wavelengths from 0.6 μm into the mid-infrared...
38 KB (3,772 words) - 18:01, 3 August 2024
distribution is required. An example is laser surgery. Power-in-the-bucket and Strehl ratio are two other attempts to define beam quality. Both these methods use...
7 KB (965 words) - 05:36, 19 August 2024
aligned images according to the image centroid, giving a lower overall Strehl ratio. In 1970, the French astronomer Antoine Labeyrie showed that Fourier...
14 KB (1,654 words) - 11:20, 31 May 2024
Newton's rings Optical unit Point spread function Debye-Scherrer ring Strehl ratio Speckle pattern Herschel, J. F. W. (1828). "Light". Transactions Treatises...
30 KB (4,608 words) - 01:21, 23 July 2024
beam is M times the embedded Gaussian beam waist. Laser beam profiler Strehl ratio Siegman, A. E. (October 1997). "How to (Maybe) Measure Laser Beam Quality"...
6 KB (908 words) - 21:24, 11 October 2023
temperature difference Optical resolution Signal-to-noise ratio Signal transfer function Strehl ratio Transfer function Wavefront coding The exact definition...
42 KB (5,594 words) - 10:26, 20 August 2024
as SPHERE on the ESO VLT and GPI on the Gemini telescope, achieve a Strehl ratio of 90% at a wavelength of 2.2 micrometers, but only within a very small...
31 KB (3,922 words) - 23:48, 7 August 2024
whose Fourier transform is the optical transfer function. From this, the Strehl ratio can also be calculated. The other special case to consider is that of...
16 KB (1,884 words) - 02:09, 18 May 2024
routinely uses the ALTAIR system, built in Canada, which achieves a 30–45% Strehl ratio on a 22.5-arcsecond-square field and can feed NIRI, NIFS or GNIRS; it...
29 KB (3,449 words) - 02:14, 14 August 2024
025 arcsec Spatial resolution at 0.75 μm (median seeing) 0.042 arcsec Strehl ratio at 0.75 μm 5% (10% goal) Limiting magnitude in 1h RAB = 22.3 Limiting...
16 KB (1,836 words) - 15:39, 4 April 2024
various metrics, including encircled energy, modulation transfer function, Strehl ratio, ghost reflection control, and pupil performance (size, location and...
9 KB (1,096 words) - 00:54, 6 July 2024
diffraction Fabrication and testing of optical components Null corrector Strehl ratio Texereau 1984 pp.68-70 section 2.25 Harbour 2008 p 39 Texereau 1984 p...
8 KB (996 words) - 04:00, 12 May 2024
design of the Large Binocular Telescope, which achieved record breaking Strehl ratios with its AO system in 2010. From 2004 to 2010, approximately 8% of MMT...
7 KB (806 words) - 18:54, 25 October 2022
monochromatic light Exposure time is shorter than the timescale of aberrations Strehl ratio is high (good adaptive optics) Linearity of the pixel response (i.e....
5 KB (710 words) - 02:05, 18 May 2021
Am. A 15, 2759–2768 (1998). H. Yura and D. Fried, "Variance of the Strehl ratio of an adaptive optics system," J. Opt. Soc. Am. A 15, 2107–2110 (1998)...
13 KB (1,916 words) - 03:25, 31 July 2024
is to study Solar System objects at high spatial resolution and high Strehl ratio. Asteroids and their moons, the satellites of Jupiter and Saturn, and...
8 KB (1,057 words) - 13:51, 14 May 2024
(Borussia Dortmund) 19 goals Christian Müller (1. FC Köln) 15 goals Heinz Strehl (1. FC Nürnberg) 14 goals Franz Brungs (Borussia Dortmund) Uwe Seeler (Hamburger...
19 KB (473 words) - 18:44, 16 February 2023
called lucky imaging. Many methods exist for image selection, including the Strehl-selection method first suggested by John E. Baldwin from the Cambridge group...
17 KB (1,822 words) - 14:04, 14 June 2024
PMC 4025987. PMID 24245813. Van Doren J, Arns M, Heinrich H, Vollebregt MA, Strehl U, K Loo S (March 2019). "Sustained effects of neurofeedback in ADHD: a...
253 KB (26,984 words) - 09:23, 19 August 2024
Ohlhauser (Bayern Munich) 18 goals Lothar Emmerich (Borussia Dortmund) Heinz Strehl (1. FC Nürnberg) 17 goals Horst Köppel (VfB Stuttgart) 16 goals Rainer Budde...
22 KB (623 words) - 07:12, 23 February 2023
Rot-Weiss Essen Willi Lippens 79 172 0.46 1966 1976 17 1. FC Nürnberg Heinz Strehl 76 174 0.44 1963 1969 18 Hannover 96 Hans Siemensmeyer 72 278 0.26 1965...
24 KB (231 words) - 12:50, 15 August 2024
Leupold, Dieter Nüssing, Marc Oechler, Luitpold Popp, Raphael Schäfer, Heinz Strehl, Heinrich Stuhlfauth, Horst Weyerich, Sergio Zárate As of 24 May 2021 Numbers...
55 KB (3,523 words) - 16:40, 20 August 2024
increased. In Mittweida he had hoped to study with Dr. Karl Strehl, a noted optical theorist. Strehl, however, had recently departed. Gradually, Schmidt found...
17 KB (2,337 words) - 17:28, 16 July 2024
Ferenc Puskás Real Madrid 12 1960–61 José Águas Benfica 11 1961–62 Heinz Strehl 1. FC Nürnberg 8 Alfredo Di Stéfano Real Madrid Justo Tejada Real Madrid...
62 KB (646 words) - 15:53, 31 July 2024
PMID 34696417. von Lilienfeld-Toal M, Nattermann J, Feldmann G, Sievers E, Frank S, Strehl J, Schmidt-Wolf IG (June 2006). "Activated gammadelta T cells express the...
35 KB (4,472 words) - 00:20, 13 June 2024
International Studies. Sherlin LH, Arns M, Lubar J, Heinrich H, Kerson C, Strehl U, Sterman MB (October 2011). "Neurofeedback and Basic Learning Theory:...
131 KB (15,369 words) - 14:04, 18 July 2024