... Note on Filters: . ... NGC 3351 is a mostly face-on late type spiral galaxy. It is marked by a bar like feature in its central regions and a strong inner ring of star formation. ... The galaxy was imaged through the A1,B1 and B5 filters over a total exposure time of 1936 seconds. ... The galaxy was imaged through the A1 filter for 450 seconds and the B1 filter for 1084 seconds. ... The galaxy was imaged through the A1 and V1 filters over a total exposure time of 1200 seconds. ...

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Describes how spatial region boundaries are handled. The golden rule for spatial region filtering was first enunciated by Leon VanSpeybroeck in 1986: . ... With this in mind, the rules for determining whether a boundary image pixel or table row are assigned to a region are defined below. For image filtering, pixels whose center is inside the boundary are included. ... That is, an row is inside the boundary without regard to its integerized pixel value. ...

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• Chandra Images for G327.3+00.4
• Chandra Images for G001.9+00.3
• Chandra Images for G352.7-00.1

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. " The Arecibo Observatory is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations . expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation."

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• The AO Optical Laboratories National Astronomy and Ionosphere Center (Arecibo
• I-GALFA View of a Galactic Tangent Region
• Sixto Gonz†бlez National Astronomy and Ionosphere Center (Arecibo Observatory)

... 2014 Science Highlights . ATCA Survey of Ammonia in the Galactic Center . Ott et al. (2014) present a large-scale, interferometric survey of ammonia toward the Galactic center observed with the Australia Telescope Compact Array (ATCA). ... The RGB image shows the temperature map of the Galactic center: T kin ~ 30 K (blue), T kin ~ 50 K (green), lower limit of 80 K (red). ... ATNF Science Highlights from refereed publications during 2014. | ... today * ATNF | ... ATCA | ...

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• ATNF Colloquium
• The giant HII region NGC 3603
• LMC HII Region Luminosities versus Observed Ionizing Stars

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• Cosmonaut Bio: Sergey Alexandrovich Volkov (09/2010)

Next: NICMOS/HST H-band (F160W) Images Up: NICMOS Science Previous: HST NICMOS Observations of . ... Observations of P . ... The NICMOS team has devised a comprehensive program of observations of the Galactic Center. ... Data in hand give a first look at variability and a detailed look at the search for the tip of the main sequence will be discussed where NICMOS has demonstrated adequate sensitivity and photometric precision to identify likely O8-B1 stars at the Galactic Center. ...

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• Unusual Emission near a Compact Source in Orion

... Data Reduction FAQ > A number of OmegaCAM filters show vignetting in their central regions. What are the causes for this and what are the dimensions of these features? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... ESO Data Access Policy . ... ESO Science Newsletter . ... A number of OmegaCAM filters are not monolithic, but consist of four segments (each covering 8 detectors) that have a central cross-shaped support structure. ... Filter . ...

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• ESO - Thesis Topic: Probing the central regions of galaxies
• ESO - Thesis Topic: Planetary Nebulae and HII regions in the Elliptical Galaxy
• The Rho Ophiuchi star formation region, where hydrogen peroxide has been

Peremennye Zvezdy ( Variable Stars ) 26 , No. ... Moscow 119992, Russia . ... 84/32, Moscow 117997, Russia . ... Our CCD observations compared to times of minima derived from the archival photographic plates and from the NSVS and ASAS-3 data clearly show that the orbital period of the system is variable. ... The phased light curve for the light elements . ... CCD, Moscow . ... and for the current linear light elements (in excellent agreement with the NSVS, ASAS, and our CCD observations): . ...

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• XWare > APOD

... The coronographic spot imaged onto the focal plane provides a circular occulted region 0.3 arcsec in radius. ... Coronographic imaging requires an acquisition sequence at the beginning of the observation to center the target onto the occulting spot since the size of the occulting spot is smaller than typical HST blind-pointing errors. ... The acquisition software, analyzes this aperture, locates the center of the target, and offsets the telescope so that the target is placed behind the occulting...

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• HDF-S Project Description
• Polarizer Quad Filter
• Nicmos Scientific Rationale:

XMM-Newton Science Analysis System . ... Meta Index / Home Page / Description / File-based filters region(reg.fits, x , y ) is true if the point is contained in any of the regions specified in the region file reg.fits . If the second form of the region filter region(reg.fits) is used the coordinates of the test points come from columns with names taken from the MFORM1 attribute in the specified block. ... XMM-Newton SOC/SSC -- 2007-07-08 ...

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• Special region filter functions

... As is known, the observed distribution of massive stars in the direction of the Galactic center looks very peculiar: the vast majority of all massive stars are concentrated towards the central 1 pc or so (Genzel et al. ... In order to compare the observed distribution of X-ray sources in the Galactic center with what would be expected from the population synthesis computations, we have considered two hypothetical scenarios for the location of the starburst. ...

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• Discussion and conclusions
• Population Synthesis of X-ray Sources at the Galactic Center

... НЕПРЕРЫВНОГО МАТЕМАТИЧЕСКОГО ОБРАЗОВАНИЯ . ... Кружок ?Олимпиады и математика? ... Московская математическая олимпиада . Заочный математический конкурс . ... Устные математические олимпиады . Олимпиады по программированию . Математический праздник . Математические регаты . ... Математические бои . Олимпиада по геометрии им. И.Ф.Шарыгина . ... Программа ?Math in Moscow? Научные конкурсы . Творческий конкурс . ... График олимпиад . ... XXVII Математический праздник . ...

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• Moscow Center for Continuous Mathematical Education - Independent University of

Contact Russet McMillan (primary) or your Observing Specialists (secondary) for additional information. Contact Jack Dembicky for web page errors, corrections, ommisions, or additions. This page last updated: July 6, 2004 - JMD . This page last checked: September 14, 2003 - JMD . Configuring TUI to use the Echelle . Setting up the Echelle exposure parameters . Taking your Calibration lamps . ... Setting up multiple exposures . ... Stopping an exposure (discarding data) . ...

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• APO - narrow band filters
• Hodge on/off H-alpha Narrow Band Filters
• UW-WSU Nebular Emission-Line Filters

[ CATS home ] [ Back to CATS list ] [ ftp ] . 1998..............Trushkin Compilation of Galactic catalogs near the Galactic center. |b|

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• Optical spectroscopy
• Radio survey for new compact HII regions
• The use of IRAS data to define H II regions

... The solar disk in broadband Ca K . This solar image is taken through a 10 wide filter centered on the K line of Calcium ( = 3933 ). ... Because the filter is wide enough to let through some of the continuum on either sides of the Ca K line, features of the solar disk seen in white light remain visible. As a consequence, sunspots can still be seen, but now plages appear much more clearly as bright areas, often surrounding large sunspot groups. ...

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• First Images and Spectra from ISAAC on UT1 (ESO Press Release 19/98)
• Gaspra - Galileo
• The BD+40 region (Abstract)

... commands . ... data_spectrum <name> : data in "spectrum" format . ... Repeat command to add additional mask regions. sigma is the s.d. to apply to the data within the region to be masked. ... Repeat command to add additiona continuum regions. ... cont_reg_clear : Clear current continuum regions . ... The observed spectrum is then multipled by this filter to obtain a new spectrum for use by SFIT. cont_sigma : Computes standard deviation of data in continuum regions and applies it to current data . ...

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• Armagh Observatory
• Explosive Events
• J.G. Doyle, Research Astronomer

... According to the most popular cosmological paradigm, the greater part of the galaxy mass is accumulated in the dark matter halo. ... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ... The shape of the dark halo in the model was chosen so as to achieve the best fit to the observed rotation of both galaxies themselves and their polar rings. ... The SPRC-7 galaxy. ...

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• Galaxy sector, archive 1994
• Solar system sector, archive 1994

Direct images gallery. Here we have presented some images obtained on SAO telescopes by using SCORPIO. ... NGC 6951 . ... This color image are combined from the frames in the filters V ("blue"), R ("green") and middle-band filter SED755 ("red"). ... The true color image is constructed from three frames in B (Texp=600 sec), V (Texp=480 sec) and R (Texp=400 sec) filters. ... The true color image is constructed from three frames in B (Texp=180 sec), V (Texp=120 sec) and R (Texp=90 sec) filters. ...

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• Fabry-Perot Interferometer: Gallery Old
• Laboratory of spectroscopy and photometry of extragalactic objects : Vortex
• SCORPIO: IFP Gallery

... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

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• Meade Series 4000 Broadband Nebular Filters
• Meade Instruments Corporation - Pictor 616A Color Filter System