... 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 . ...

... Methane Rain Possible on Titan . ... Recent analyses of measurements taken by the Huygen's probe that landed on Titan in 2005 January indicate that the atmosphere is actually saturated with methane at a height of about 8 kilometers. The Milky Way over Utah . ... If sometimes it appears that the entire Milky Way Galaxy is raining down on your head, do not despair. ... The above image is a radar reflection from terrain near Titan's North Pole and spans a region about 200 kilometers across. ...

... In the above example, the second region uses the global coordinate system (PHYSICAL by default). ... Supported systems include: name description ---- ----------- PHYSICAL pixel coords of original file using LTM/LTV IMAGE pixel coords of current file FK4, B1950 sky coordinate systems FK5, J2000 sky coordinate systems GALACTIC sky coordinate systems ECLIPTIC sky coordinate systems ICRS currently same as J2000 LINEAR linear wcs as defined in file In addition, two mosaic coordinate ...

Session 9 - The Hubble Deep Field. ... The Hubble Deep Field (HDF) experiment is a unique project to explore at unprecedented depth and angular resolution the faintest and most distant galaxies. ... This allows study of broad-band spectral energy distribution, morphology and number count statistics for galaxies that span the largest, if not the whole, time interval of galaxy history. ... Here we present preliminary number counts, color-magnitude and color-color diagrams for the 4 HDF frames. ...

... The region extensions added to the source list comply with the ``ASC FITS File Designers' Guide'' specifications. ... Additionally, the non-standard COVERAGE attribute is provided for order regions and the spatial background region, and the non-standard pair, COVBELOW and COVABOVE , is provided for image regions. ... There is only one extension of this kind. ... image regions . ... There is one extension of this kind for each requested order, for each selected source. order background regions . ...

... This year SSAU provides 1429 state-funded places for admission in all kinds and directions of educational programs. ... In addition, SSAU Admission Committee notes the substantial increase in interest from the foreign applicants this year. The number of applications from foreign countries has already surpassed last year's totals - 76 applications. Based on the experience of admission campaigns of previous years, SSAU expects summer 2014 to enrol about 150 foreign students in the university. ...

... Sun images . ... Sun flares . ... Active areas . September : 2015 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Coordinates and other characteristics of active regions are issued for September 09, 2015 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for September 09, 2015 00:31 UT . ...

CONTENTS Volume 24 Number 1 (January 1997) . ... CHROMOSPHERIC LINE BLANKETING AND THE Ca I 4227 LINE IN M DWARFS . ... RADIO AND OPTICAL OBSERVATIONS OF INTERMEDIATE VELOCITY GAS TOWARDS THE M15 REGION . ... ROSAT PSPC OBSERVATIONS OF THREE SCULPTOR GROUP GALAXIES: NGC 55, NGC 247 AND NGC 300 . ... 1995-1999 Irish Astronomical Journal, Downshay, 12 Heather Lea Avenue, Dore, Sheffield S17 3DJ, S. Yorkshire, United Kingdom WWW Contact: Alastair G Gunn Back to IAJ Home Page ...

... 2002 July 18 . Sunspot Region 30 . Credit: MDI , SOHO , ESA , NASA . Explanation: The solar active region designated number 10030 (or simply region 30) is now appearing on the visible hemisphere of the closest star . ... The panels above were recorded July 15, 16, and 17 (top to bottom) by the MDI instrument on the space-based SOHO Observatory as the solar rotation slowly carried the large, dynamic sunspot group across the Sun's nearside . ... About APOD | ... NASA Technical Rep.: ...

The Status popup displays useful information about the state of sets, regions, and graphs. ... When the number of sets is less than 30, this button is not needed, use the scroll bars to view the status of the sets that are not shown in the display. ... Operations in the Status popup are performed by clicking on the operation, then clicking on one or more set numbers shown in the display. ... Clicking on Copy followed by clicking on a set number in the scrolled window will select the set to copy from. ...

Next: Listing Image Values Up: Image Analysis Previous: Image Analysis . Task histo is a fairly commonly used task, giving a number of image statistics and a simple histogram. Apart from the input image (keyword in ), it can take a region of interest ( region ), a range to determine the histogram over ( range ), and the number of bins in the histogram ( nbins ). ... region . ... If you do not like histo , or you would like a PGPLOT plot of the histogram, you could use the task imhist instead. ...

... 323, P 659-673 (1997). Abstract . ... 323, P 674-684 (1997). ... Number counts and optical identifications of faint IRAS sources . ... 323, P 685-696 (1997). ... 323, P 697-706 (1997). ... 323, P 707-716 (1997). ... 323, P 717-726 (1997). ... 323, P 727-738 (1997). ... 323, P 739-748 (1997). ... 323, P 749-761 (1997). ... The [Fe/H] distribution of a volume limited sample of solar-type stars and its implications for galactic chemical evolution . ... helpdesk@link.springer.de . ...

Back . Each element of main mirror have its number (1-900). The number of central elements of main azimuths are shown.

Next: Selection effects Up: Emission-line galaxies Previous: Emission-line galaxies . ... O III ] ? ... In Fig. 4 emission-line galaxies from the HSS sample are plotted in comparison with some BCGs from the SBS (Izotov et al. [ 1994 ], [ 1997b ]; Thuan et al. [ 1995 ]) and ELGs from the Case survey (Weistrop & Downes [ 1988 ], [ 1991 ]; Augarde et al. ... We tentatively classify it as a possible LINER (low-ionization nuclear emission-line region galaxies; Heckman [ 1980 ]). ... emission lines. ...

2015 . ... A priory National teams of countries consist of winners and prizewinners of National Astronomy Olympiad take part in IAO. ... Как правило, каждую страну на IAO страну представляет команда, составленная из победителей и призеров национальной астрономической олмпады. ... In the case of absence of a National team from a country, organizers of IAO may permit any provinces, regions, cities of this country to form the team representing the country. ... National team may consist of: . ...

Astronomy Discussion Forums . Forums: . ... How Do You Feel About Numbers? ... Post Message | ... Posted by Richard D. Stafford, Ph.D. on September 15, 2002 16:22:25 UTC . ... Wait - harvey1 - September 15, 2002 - 22:20 UTC . I don't follow you! - doctordick - September 16, 2002 - 14:59 UTC . ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

markback -- mark regions in the background for performing statistics on markback association . association . calnicb style association input file with list of images to be processed and co-added. number . labels boxes with numbers on image display . ... Only the first 2 boxes will be used by asncombine. nmem . image in association to use for marking the boxes. markback displays one image of an association (the nmem'th image), and allows the to mark nbox regions on the image display. ...

Data Archive . Video-records archive . ... 1997 | ... Time (UT) Counter Remarks _______________________________________________________________________________ 05.01. 10:29:17 2:06:42 scan disk 11:58:23 2:11:19 active regions 06.01. 09:49:51 2:12:17 scan disk 10:56:24 2:19:10 active regions 12.01. 09:39:12 2:19:59 scan disk 10:03:41 2:27:51 active region 10:05:09 2:28:34 filament 10:07:17 2:29:10 ...

Short-Period Comets: Origin and Terrestrial Impact Hazard . ... The model is consistent with the basic observed distributions of near-parabolic comets, short-period comets, Centaurs and high-eccentricity trans-Neptunian objects.This model requires that initial objects in the early Solar System are concentrated to the outer planetary region, and the physical lifetime of comets in the inner planetary region at the present epoch is an increasing function of initial perihelion distances. ...

The following parameters as a function of the Moscow time (MT=UT+1h) are enclosed in this file. 1. no . ... Simulative geophysical region name . ... Simulative geophysicl region in/out . ... coordinate - . ... Corrected geomagnetic latitude (deg) . ... Geomagnetic local time (h) in the magnetic footprint . ... Geomagnetic local time (h) in the sdatellite position . ... Solar-ecliptic local time (h) in the sdatellite position . ... Geografical longitude (deg) of the magnetic footprint . ...