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Topic: Resolving power

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Focal length

Angular diameter

Interferometry

VLTI

Telescope

Electron microscope

Altazimuth mount

Lord Rayleigh

Airy disc

Sebastian Elcano

	Celestron -- Telescope Basics
		Resolving power is a direct function of aperture such that the larger the aperture, the better the resolving power.
		To determine power, divide the focal length of the telescope (in mm) by the focal length of the eyepiece (in mm).
		Powers lower than this are not useful with most telescopes and a dark spot may appear in the center of the eyepiece in a Catadioptric or Newtonian telescope due to the secondary or diagonal mirror's shadow.
	www.celestron.com /tb-trms.htm (2665 words)

	Resolving Power
		The resolving power of a telescope is one of the most important characteristics.
		The resolving power of the telescope is a consequence of the wave nature of light and the phenomenon of diffraction.
		We can emphasize this by indicating that the theoretical resolving power of a telescope will be the same if we put a mask in front of the objective, covering most of it, except for two sectors at the ends of a diameter.
	home.mchsi.com /~mikevald/Resolving.html (2501 words)

	Definition: resolving power (Site not responding. Last check: 2007-10-08)
		resolving power: A measure of the ability of a lens or optical system to form separate and distinct images of two objects with small angular separation.
		Note 2: The resolving power of an optical system is ultimately limited by (a) the wavelength involved, and (b) diffraction by the aperture, a larger aperture having greater resolving power than a smaller one.
		Note 3: While the term "resolving power" is usually applied to the traditional optical regime, it may also be applied to, e.g., the radio regime, especially at, but not necessarily limited to, very short wavelengths, on the order of millimeters or centimeters.
	www.its.bldrdoc.gov /projects/devglossary/_resolving_power.html (213 words)

	2.3 Resolving Power
		Resolving power is an index used to represent the limit of spatial observation.
		Rayleigh's resolving power: the distance between the left Airy peak and the right Airy peak when it coincides with the zero point of the left peak, that is 1.22u in Figure 2.3.2.
		The resolving power measured on a resolving test chart by human eyes, depends on individual ability and the shape or contrast of the chart.
	www.profc.udec.cl /~gabriel/tutoriales/rsnote/cp2/cp2-3.htm (383 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		However, the resolving power is limited by the optical quality of the telescope and by the atmospheric conditions.
		The resolving power of a telescope is proportional to its aperture.
		For an interferometer, the resolving power is proportional to the distance that separates the individual telescopes.
	www.astro.indiana.edu /~classweb/E105s0195/Problem/soln2.html (1496 words)

	TECHNOLOGY CORNER
		Resolving power is the ability of the eye, or an optical instrument, to differentiate between two points or lines.
		When resolving power is expressed as an angle, simple geometry permits us to calculate the relationships between viewing distance and line or point separations.
		The actual resolving power of the human eye with 20/20 vision is typically considered to be about one arc minute or 60 arc seconds, which is about one-third of the theoretical resolution we just calculated based solely on the diameter of the pupil.
	www.tvtechnology.com /features/Tech-Corner/Hoffner_features.shtml (1383 words)

	KODAK: Resolving Power (Site not responding. Last check: 2007-10-08)
		The measured resolving power depends on the exposure, the contrast of the test target, and, to a lesser extent, the development of the film.
		The resolving power of a film is greatest at an intermediate exposure value, falling off greatly at high- and low-exposure values.
		The resolving power reported is based on film exposed and processed as recommended.
	www.kodak.com /US/en/motion/students/handbook/sensitometric7.jhtml?id=0.1.4.9.6&lc=en (425 words)

	Resolving power of magnetics and gravity (Site not responding. Last check: 2007-10-08)
		The ability to resolve gravity and magnetic bodies increases as the level of the derivative of the gravity or magnetic field increases.
		The resolving power of magnetic gradients is equal to or greater than that of gravity gradients.
		For magnetic bodies, the resolving power varies considerably depending on the strike of the body in relation to magnetic north.
	uregina.ca /~morrisev/Geology/abstr1.htm (267 words)

	Diffraction grating resolution
		Resolvance or "chromatic resolving power" for a device used to separate the wavelengths of light is defined as
		A standard benchmark for the resolvance of a grating or other spectroscopic instrument is the resolution of the sodium doublet.
		An approximate development of the resolvance expression can be done by using the small angle approximation to the condition for maxima.
	hyperphysics.phy-astr.gsu.edu /hbase/phyopt/gratres.html (212 words)

	resolving power - Definition of resolving power - resolving power in Encyclopedia - DictionaryWords.net (Site not responding. Last check: 2007-10-08)
		That which is resolved or determined; a settled purpose; determination.
		Resolution of a force or Resolution of a motion (Mech.), the separation of a single force or motion into two or more which have different directions, and, taken together, are an equivalent for the single one; -- the opposite of composition of a force.
		Resolution of a nebula (Astron.), the exhibition of it to the eye by a telescope of such power as to show it to be composed of small stars.
	www.dictionarywords.net /find/word/resolving+power (366 words)

	Resolution of Microscopes (Site not responding. Last check: 2007-10-08)
		She said that since the resolving power of an EM is 0.5nm while the resolving power of a LM is 0.2um, the EM will perceive 2 pts as further apart and so the whole image will be enlarged.
		I have learnt that the resolving power of a microscope is defined as the minimum distance by which 2 points must be separated in order for them to be perceived as 2 separate points rather than a fused image.
		Regards, ProfHoff ========================================================= I have learnt that the resolving power of a microscope is defined as the minimum distance by which 2 points must be separated in order for them to be perceived as 2 separate points rather than a fused image.
	www.newton.dep.anl.gov /askasci/gen99/gen99852.htm (540 words)

	Resolving Power
		Although we report the angular resolving power in terms of radians, in reality the minimum resolvable distance we measure is NOT the arc length, but rather the chord length (which is the minimum resolvable distance).
		The minimum ground resolved distance for the Thematic Mapper instrument on Landsat 4 and 5 is 30 meters from its nominal altitude of 705 km.
		The minimum ground resolved distance for the Panchromatic band of the HRV instument on SPOT 1,2, and 3 is 10 meters from their niminal orbital altitude of 830 km.
	web.pdx.edu /~emch/rs/EXbrs.html (595 words)

	Resolving power and acutance (from technology of photography) -- Encyclopædia Britannica (Site not responding. Last check: 2007-10-08)
		The fineness of detail that a film can resolve depends not only on its graininess but also on the light scatter or irradiation within the emulsion (which tends to spread image details) and on the contrast with which the film reproduces fine detail.
		More results on "Resolving power and acutance (from technology of photography)" when you join.
		Treatise on the Power and Primacy of the Pope
	www.britannica.com /eb/article-36456 (847 words)

	Resolving power
		The resolving power of X-ray imaging systems may be determined by several methods; one uses a resolving power target made up of a series of parallel wires or lead strips, the space between each strip being equal to the strip width.
		The resolving power of a film - screen combination may then be determined by counting the number of line pairs (one lead strip and one space) that can be seen in the developed radiograph.
		In ultrasound imaging, the term resolving power is sometimes used synonymously with axial resolution.
	www.amershamhealth.com /medcyclopaedia/Volume%20I/resolving%20power.html (147 words)

	Document: CLN_19_07
		Decades ago, when fl and withe films were the dominant photographic recording materials, the resolving power was seen by many photo enthusiasts as the deciding factor of photographic quality.
		Although we at Carl Zeiss are very much aware that resolving power is only one of many criteria which constitute image quality, it is quite important when photos are taken for documentary purposes, where resolving power primarily determines image quality.
		The film manufacturers generally conduct their tests under special, sterile, precisely repeatable laboratory conditions where high performance microscope lenses with resolving powers beyond 1.000 linepairs per millimeter and light sources with very controlled spectrum are used to image the test targets onto film, completely unrelated to any real world photo situation.
	www.zeiss.de /C12567A8003B58B9/allBySubject/48D8F331DF48EE72C1256CEF002B0240 (666 words)

	Rob Galbraith Digital Photography Insights: Is 13.8 mp a waste of resolving power? (Site not responding. Last check: 2007-10-08)
		The combined resolving power of film/lens is drastically less than that of the lens itself.
		While I agree with most of the points raised in this thread, I think the estimates of lens resolving power are either exaggerated or not reflective of the characteristics of the types of lenses in general use today.
		For most lenses, there is a marked fall-off in resolving power at or near maximum aperture and more than 9mm from the center of the image circle.
	forums.robgalbraith.com /showflat.php?Cat=&Number=24982 (1787 words)

	Resolving Powers of Immersed Transmission Gratings
		, the resolving power is approximately proportional to
		The usefulness of Littrow configuration is three fold: (i) VPH unslanted fringes can be used (slanted fringes may curve during DCG processing); (ii) the beam size remains about the same, which keeps the camera optics smaller and simpler; and (iii) the angular size of the slit remains nearly the same.
		Figure 2 shows resolving powers at Littrow versus total beam deviation with the Bragg angle annotated.
	www.astro.livjm.ac.uk /~ikb/grating-res (430 words)

	resolving power
		The resolving power may be increased by increasing the reflection coefficient.
		This definition is not suitable for the present case, as we do not have a zero in the diffraction pattern.
		Instead, we use a definition due to Taylor, which states that the peaks are resolvable if their separate intensity curves intersect at their half-intensity positions.
	www.cmmp.ucl.ac.uk /~ahh/teaching/1B24n/lect29/node5.html (169 words)

	TAF - resolving power
		the Resolving Power (Pr) of an optical system, intended as the capability of an optical system to make clearly visible two objects angularly near, is identified with the minimum angle of resolution (a) showed by an optical system and increase when the latter decrease.
		of lens because the higher is the aperture of lens the lower is the minimum angle of resolution (a) and consequently the higher is the Resolving Power (Pr)
		Resolving Power (theorical and practical) for 10 to 500 mm.
	www.astrosurf.org /taf/pot-ris/pot-ris-eng.htm (415 words)

	Design Of Resolving Power Of Buried Object Materials Characterisation Sensors
		Values of resolving power are 0,05 and 0,005 for curves A and B, respectively.
		The resolving power was defined for the approach to buried object materials characterisation based on acoustic impedance matching.
		Generally, larger resolving power means that there is larger difference in transmission coefficient for a collection of different materials.
	www.ndt.net /article/ecndt02/354/354.htm (1862 words)

	美国专利申请公开说明书 20020140903 - System and method for providing an improved test for determining the ... (Site not responding. Last check: 2007-10-08)
		A system and method is disclosed for determining the resolving power of an eye.
		At a point where the eye ceases to resolve the images of the two light sources the two colors of the light sources combine to form a third color.
		By selecting certain values for the flicker rates the two colored light sources combine to form a light that does not appear to flicker at the point where the eye ceases to resolve the images of the two colored flickering light sources.
	cxp.paterra.com /uspregrant20020140903cn.html (181 words)

	Direct measurement of the resolving power of X-ray CT system in SPring-8 (Site not responding. Last check: 2007-10-08)
		The resolving power of high spatial resolution X-ray CT system was measured with an artificial test pattern for X-ray CT system at BL47XU in SPring-8.
		For the precise measurement of the resolving power, the artificial test patterns of Cu/Al multilayer were fabricated by DC sputtering deposition at AIST Kansai.
		It was confirmed that the system had a resolving power of 2 micrometers at 15keV from the CT images of test patterns.
	lbl.confex.com /lbl/sri2003/techprogram/paper_3989.htm (249 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		The ability to reveal detail is resolution, or the resolving power of the microscope.
		As we shall see, resolving power is a number and can be quantified.
		Resolving power is the ability to distinguish between two points that are close together.
	www.bethel.edu /~dcranksh/Bio341/Lablecture-Microscopy.doc (1609 words)

	Aftermath
		The catastrophe of capitalism in the 1980s was mirrored, though to a lesser extent, in Eastern Europe, contributing to the disintegration of the Soviet tyranny and its virtual disappearance from the world scene.
		Its agrarian reform is a powerful propaganda weapon; its broad social program of aiding the workers and peasants in a victorious struggle against the upper classes and large foreign enterprises has a strong appeal to the populations of Central American neighbors where similar conditions prevail."
		The first component was an aerial attack on the civilian infrastructure, targeting power, sewage and water systems; that is, a form of biological warfare, designed to ensure long-term suffering and death among civilians so that the U.S would be in a good position to attain its political goals for the region.
	www.zmag.org /chomsky/articles/z9110-aftermath.html (6032 words)

	telescope: Resolving and Magnifying Power
		The smallest angular separation that can be unambiguously distinguished is called the resolving power of the telescope and is proportional to the ratio of the wavelength of light being observed to the diameter of the telescope.
		The magnification, or power, of the telescope is relevant only when an eyepiece, or ocular, is used to magnify the image for visual inspection.
		The ratio of these two sizes is the magnifying power and is equal to the ratio of the focal lengths of the objective and ocular.
	www.factmonster.com /ce6/sci/A0861462.html (278 words)

	Sky-Watcher Telescope. Resolution (Site not responding. Last check: 2007-10-08)
		If the diameter of the aperture is twice as big then the resolving power should be twice as good.
		This is often called the resolving power of a telescope.
		A formula to estimate the distance apart that two equal brightness stars must be to separate them is 4.54 divided by the aperture in inches (or 116 divided by the aperture in mm).
	www.skywatchertelescope.net /EducationTBRE.html (405 words)

	Transmission & Distribution World: A Smarter Approach to Resolving Power-Line Noise (Site not responding. Last check: 2007-10-08)
		If the noise on the AM radio stops while the power is off, the source of the interference is within the residence.
		If the noise stopped while the power was off, locate the circuit supplying the power to the noise source using an AM radio as before, and de-energize the individual circuit breakers one at a time until the noise stops.
		Because power lines carry 60-Hz ac, the voltage on them passes through two peaks each cycle (one positive and one negative) and passes through zero twice each cycle.
	www.findarticles.com /p/articles/mi_m0CXO/is_9_56/ai_n6212807 (1420 words)

	Power and Clinical Psychology: a Model for Resolving Power-Related Ethical Dilemmas - Questia Online Library
		It is argued that power is present at every level of clinical psychologists' practice and can be used positively and negatively.
		Drawing on organizational, ethical, psychological, and personal influences, a heuristic problem-solving model for the process of understanding and resolving power-related ethical dilemmas is proposed.
		It is argued that resolving power-related ethical issues cannot be achieved through the statement of absolute values but rather requires a process of understanding, action, and review.
	www.questia.com /PM.qst?a=o&d=95748756 (317 words)

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