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Topic: Arcminute

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	Minute of arc - Wikipedia, the free encyclopedia
		Its usage is limited to those fields which require a handy unit for the expression of very small amounts of arc, such as astronomy.
		The symbol for marking the arcminute is the prime (′) (
		This unit is commonly found in the firearms industry and literature, particularly that concerning high-powered rifles.
	en.wikipedia.org /wiki/Arcminute (497 words)

	Arcminute Microkelvin Imager - Wikipedia, the free encyclopedia
		The Arcminute Microkelvin Imager (AMI) is an interferometer radio telescope designed principally to image secondary anisotropies in the cosmic microwave background (CMB) at higher angular resolution than the Very Small Array.
		Commissioning observations in August 2005 mapped the cluster plasma in Abell 1914.
		The Arcminute Microkelvin Imager has recently been joined by the Sunyaev-Zel'dovic Array in California which is performing a similar survey, and the South Pole Telescope in Antarctica which will commence a survey in 2007.
	en.wikipedia.org /wiki/Arcminute_Microkelvin_Imager (316 words)

	GIC - Giant deep space wavefront called the 'Matrix' (Site not responding. Last check: 2007-10-08)
		In 15x15 arcminute Dss scale, and un-enhanced, galaxy Ngc 6782 looks like this, which helps you to comprehend the full magnitude of the super size and scale of the gravity wavefront of the 'Matrix'.
		Dss (60x60) arcminute plates were used to put together the blue composite of the huge 'Matrix' in the deep space sky.
		The view next is from a Dss 15x15 arcminute image, the donut bright object cut out, and highly enhanced including a color tone version to make the outer superstructure more easily seen, and expanded to make the outer superstructure more visible in albiet blurry context.
	www.cosmicastronomy.com /6782.htm (3652 words)

	Cosmic microwave background radiation - Wikipedia, the free encyclopedia
		on scales of roughly tens of arcminutes to several degrees.
		Its detectors got a trial run at the Antarctic Viper telescope as ACBAR (Arcminute Cosmology Bolometer Array Receiver) experiment – which has produced the most precise measurements at small angular scales to date – and at the Archeops balloon telescope.
		Arcminute Cosmology Bolometer Array Receiver - measured intermediate and small scale fluctuations with improved precision
	en.wikipedia.org /wiki/Cosmic_microwave_background_radiation (1938 words)

	Primary CMB Anisotropy at Arcminute Scales
		The horizontal bars at the bottom show the range of spatial scales at which the Planck satellite and the SPST are sensitive to primary anisotropy.
		The shape of the damping tail is a manifestation of the speed at which the recombination process occurs, and the degree to which recombination is mixed with re-ionization.
		To study primary anisotropy at arcminute angular scales, it will be important to simultaneously understand the secondary contribution to anisotropy due to Sunyaev-Zel'dovich (S-Z) distortion in galaxy clusters between the recombination last scattering surface and the observer.
	cfa-www.harvard.edu /~aas/SPT/cmb.htm (773 words)

	[No title]
		It's a fairly bright globular, with a prominent 2 arcminute core embedded in a 5 arcminute halo.
		IC 1276 was only 1 arcminute across, but I kept seeing a single resolved star at 122x and 135x.
		NGC 6144 is an otherwise overlooked globular 30 arcminutes from Antares and overshadowed by M4.
	www.eskimo.com /~rachford/observing/reports/obs_20030409.txt (1243 words)

	The Sextant
		The outer revolving arm is divided into minutes of arc, which you read by reference to the long line on the opposing, stationary scale (if the long line is between two lines on the rotating drum, choose the line of lower value).
		To read the Vernier scale for fractions of an arcminute, find the one short line on the stationary scale that is directly opposite any line on the rotating drum.
		Each space corresponds to 2/10 of an arcminute, this is the precision to which you should record your readings in this lab.
	www.astro.virginia.edu /~teacha/130_manual/node103.html (478 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		ANSWER from Sylvia Baggett on June 21, 1996: An arcsecond is 1/60th of an arcminute, which is 1/60th of a degree (so the arcsecond is 1/3600th's of a degree).
		To have the coin appear only 1 arcminute across, your friend has to stand with the coin about 86 meters (286.5 feet) away from you (almost the size of an American foot ball field!).
		And to have the coin appear only 1 arcsecond across, your friend with the coin has to be about 5160 meters away (almost 3.3 miles!!).
	quest.arc.nasa.gov /hst/QA/Definitions/Arcsecond_defined.1 (369 words)

	UGC - Uppsala General Catalog of Galaxies
		Notice that the Declinations in the originating table were given in 1950 equatorial coordinates to a precision of 1 arcminute.
		The precision of this number is typically 0.1 arcminutes, although in some cases it was only given to the nearest arcminute in the originating catalog.
		The precision of this number is typically 0.01 or 0.1 arcminutes, although in some cases it was only given to the nearest arcminute in the originating catalog.
	heasarc.gsfc.nasa.gov /W3Browse/all/ugc.html (928 words)

	IR Compendium: Background: Comparisons to Spitzer
		These are simulations of a 34 arcminute square sky at 70 microns by H. Dole (U. Arizona).
		These are enlargements of simulations of a 34 arcminute square sky at 160 microns by H. Dole (U. Arizona).
		These images are a 6.7 arcminute square extracted from these simulations.
	ssc.spitzer.caltech.edu /documents/compendium/wrtsirtf (368 words)

	H-alpha in Cygnus: AAS poster (Site not responding. Last check: 2007-10-08)
		However, the H-alpha observations were made with a 50 arcminute beam size; higher resolution observations might provide a more accurate measure of the intensity along the scattering line of sight.
		For example, an otherwise smooth distribution of H-alpha emission with a small hole located at the position of a radio source (considerable less than 50 arcminutes in size), would result in an H-alpha intensity assigned by Spangler and Reynolds which would be inaccurately biased upward.
		To determine the typical intensity in a 50-arcminute box we used the median intensity in the box (not the mean, which is biased to large values by the presence of any isolated stars in the box).
	www.phys.vt.edu /~astrophy/aas_cyg/cyg.html (882 words)

	Tony's response to Gary
		Your argument is correct if applied to >>the ultimate precision, but the spec in question is rather the stability >>during an exposure.
		The reason stability on the timescale of an >>exposure and on arcminute scales is important is because we use stars >>in the field to correct for PSF ellipticity, and that must be suitably >>stable on those spatial and timescales.
		It is too soon to give up on using stars as local measures of PSF over arcminute scales.
	www.astro.princeton.edu /~dss/LSST/lsst-general/msg.225.html (668 words)

	Learn more about Hipparchus in the online encyclopedia. (Site not responding. Last check: 2007-10-08)
		He tabulated values for the chord function, which gives the length of the chord for each angle.
		He did this for a circle with a circumference of 21600 and a radius of (rounded) 3438 units: this has a unit length of 1 arcminute along its perimeter.
		He tabulated the chords for angles with increments of 7.5°.
	www.onlineencyclopedia.org /h/hi/hipparchus.html (6619 words)

	GRB 980703 at Kitt Peak
		A 15 arcminute excerpt from the POSS plates is here in FITS format, gzipped Postscript format.
		We have 15 arcminute and 23 arcminute sizes.
		Total integration time was 1 hour, beginning at 980704 09:51 UT. The field of view is 23 arcminutes, and so includes the entire RXTE and BeppoSAX error boxes for the gamma ray burst.
	www.noao.edu /noao/grb/980703.html (536 words)

	Digital Camera Astrophotography Observations
		Using the above image we measured the diameter of the Sun to be 1180 pixels and the Sun is known to be 1902 arcseconds or 31.7 arcminutes.
		Just as in the first test we determine the pixels per arcminute by dividing the measured pixels by the known diameter in arcminutes.
		Comparing these values to those from our calculator using the known object diameter, which removes the accurracy of the Starry Night software as a possible issue, you can see that the error in x is 6.7' or 13.5% and the error in y is 4.96' or 13.33%.
	velatron.com /dca/formulae/english/observations.asp (1260 words)

	An Imaging Survey of the Northern Galactic H Emission with Arcminute Resolution
		An Imaging Survey of the Northern Galactic H Emission with Arcminute Resolution
		The survey is carried out using the Spectral Line Imaging Camera (SLIC) which incorporates a fast (f/1.2) lens attached to a cryogenic CCD in combination with a narrowband interference filter.
		The pixel size is 1.6 arcminutes and the diameter of each field is 10 degrees.
	www.atnf.csiro.au /pasa/15_1/dennison/paper (264 words)

	The Arcminute Microkelvin Imager (Site not responding. Last check: 2007-10-08)
		As the name suggests, the angular sizes of the objects AMI will study are measured in arcminutes, rather than the degree scales of most CMB instruments.
		On these small scales, the main features in the CMB are expected to be `secondary' effects, due to objects between us and the CMB, rather than from structures in the last scattering surface from which the CMB comes.
		As well as making several large surveys, AMI will be open to guest observers for studies of individual objects.
	www.mrao.cam.ac.uk /telescopes/ami (235 words)

	[59.03] A BIMA Survey of Arcminute Scale CMB Anisotropy (Site not responding. Last check: 2007-10-08)
		On arcminute angular scales, secondary anisotropies such as the Sunyaev-Zel'dovich (SZ) effect in clusters of galaxies are expected to dominate the Cosmic Microwave Background (CMB) power spectrum.
		A survey of arcminute scale anisotropy with the BIMA array has accumulated over 1000 hours of integration on eighteen independent fields.
		We find a significant detection of excess power at the angular scales at which the SZ effect is expected to dominate.
	www.aas.org /publications/baas/v34n4/aas201/916.htm (197 words)

	VGPS links (Site not responding. Last check: 2007-10-08)
		Very Large Array (VLA) and the Robert C. Byrd Green Bank Telescope (GBT) were combined to obtain this image that shows the Galactic neutral hydrogen on all scales down to 1 arcminute.
		Very Large Array (VLA) and the Robert C. Byrd Green Bank Telescope (GBT) were combined to obtain images that show the Galactic HI distribution on all scales down to the resolution of 1 arcminute.
		The LSR velocity of gas in km/s is indicated in the lower right corner of each panel.
	www.ras.ucalgary.ca /VGPS/VGPS_gallery.html (155 words)

	Arcminute Resolution Gamma-ray Images of Cosmic Sources Taken with the Balloon-borne GRATIS Payload (Site not responding. Last check: 2007-10-08)
		Arcminute Resolution Gamma-ray Images of Cosmic Sources Taken with the Balloon-borne GRATIS Payload
		We present the first arcminute images of the gamma-ray sky.
		Using a combination of rotated one-dimensional coded aperture masks and a novel state of the art aspect reconstruction system we imaged a number of gamma ray sources, including CenA and GRS 1915 during the Fall 1995 Alice Springs, Australia balloon campaign.
	www.aas.org /publications/baas/v28n4/aas189/abs/S093004.html (196 words)

	First Light
		The 5 arcminute field is too small for the cluster to be well identified.
		The 12 arcminute field, processed by the program, does show how the cluster stands out from the rest of the field.
		The cluster structure, shown by the location of the blue squares, correlates well with M03.
	www.astro.ufl.edu /~bruno/SecondYearProject/node10.html (679 words)

	Dawson et al. 2001 ApJL submitted (Site not responding. Last check: 2007-10-08)
		``A Preliminary Detection of Arcminute Scale Cosmic Microwave Background Anisotropy with the BIMA Array''
		The interferometer was placed in a compact configuration for sensitivity on arcminute scales over its 66 FWHM field of view.
		This experiment is most sensitive to flat band power described by an average multipole of l = 5530, corresponding to an angular scale of 2.
	astro.uchicago.edu /sze/Pubs/abs_dawson_anisotropy.html (153 words)

	SAO 163583 15 Arcminute Field (Site not responding. Last check: 2007-10-08)
		15 arcminute square field centered on SAO 163583
		The Digitized Sky Surveys were produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166.
		The blue plates of the southern Sky Atlas and its Equatorial Extension (together known as the SERC-J), as well as the Equatorial Red (ER), and the Second Epoch [red] Survey (SES) were all taken with the UK Schmidt.
	tdc-www.harvard.edu /occultations/Uranus/kmu138.dss.html (155 words)

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