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1. Optimization of spectroscopic observations
... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...
[ Сохраненная копия ]  Ссылки http://mavr.sao.ru/hq/ssl/PFES/node2.html -- 13.9 Кб -- 02.10.2012
[ Сохраненная копия ]  Ссылки http://www.sao.ru/hq/ssl/PFES/node2.html -- 13.9 Кб -- 01.10.2012
[ Сохраненная копия ]  Ссылки http://jet.sao.ru/hq/ssl/PFES/node2.html -- 13.9 Кб -- 01.10.2012
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2. Fine Guidance Sensor Instrument Handbook
FGS Instrument Handbook for Cycle 24 . ... Fine Guidance Sensor Instrument Handbook for Cycle 24 > Appendix B: FGS1r PerformanceSummary > B.2 Angular Resolution Test . ... At the time of the test, the predicted angular separation of the components was 0.085" (Franz and Wasserman, private communication). ... By rolling the HST in 6 increments, the projected separation along the X axis varied from the predicted angular resolution limit of FGS1r (~6 mas) to the resolution limit of FGS3 (~20 mas). ...
[ Сохраненная копия ]  Ссылки http://www.stsci.edu/hst/fgs/design/documents/instrumenthandbook/appendix_performance3.html -- 33.3 Кб -- 12.04.2016
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3. Conference WPLTN-2012 | Conference page
WPLTN Technical Workshop . ... WPLTN-2012) . ... of the International Scientific Technical Conference WPLTN-2012 . ... Having an opinion that the collocation of various space geodesy measurement technologies has a fundamental role in increasing the accuracy of fundamental and applied positioning, navigation and timing provision, the International Scientific Technical Conference WPLTN-2012 has come to the following conclusions: 2.1. ... Web-page . ... Resolution of the conference WPLTN-2012 . ...
[ Сохраненная копия ]  Ссылки http://www.ipa.nw.ru/conference/wpltn2012/ -- 12.7 Кб -- 09.04.2016
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4. Spectral-Line Observing
... We will consider the rms, (K), for observations with a receiver of system temperature, T , frequency resolution, per polarization, and total integration time per observing cycle, . ... For ``in-band'' frequency switching, the line under investigation is always in the observing band. ... Position Switching or ``Out-of-Band'' Frequency Switching: Here the line is only observed for one half of the time, with noise being present all of the time. ...
[ Сохраненная копия ]  Ссылки http://www.naic.edu/~astro/guide/node15.html -- 10.0 Кб -- 22.02.2012
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5. Procedures for Observations
... The J, H and K bands are characterized by a bright background, such a background is mainly due to the emission of atmospheric lines and of thermal radiation. ... If the source cover a large fraction of the slit, spectra off-source must be observed to adequately sample the sky background. ... The on chip integration time (time spent in each position of the slit) must not exceed 40 seconds in J and H bands and 60 seconds in K band. ... We suggest a sequence of 10 for each elementary integration time. ...
[ Сохраненная копия ]  Ссылки http://www.arcetri.astro.it/irlab/instr/longsp/doc/proc_ob.html -- 7.9 Кб -- 16.02.2000
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6. Siding Spring Survey Follow-up Obs
Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...
[ Сохраненная копия ]  Ссылки http://www.mso.anu.edu.au/~rmn/follow-u.htm -- 13.0 Кб -- 16.02.2005
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7. Space Telescope-European Coordinating Facility
... The European HST Archive has been moved to ESA's European Space Astronomy Centre ( ESAC ), Spain, where most of ESA's Space Science Archives are located and operated from. ... The Space Telescope European Coordinating Facility (ST-ECF), jointly operated by ESA and the European Southern Observatory ( ESO ) was, until the end of 2010, the European HST science facility, supporting the European astronomy community in exploiting the research opportunities provided by the Hubble Space Telescope. ...
[ Сохраненная копия ]  Ссылки http://www.stecf.org/ -- 9.0 Кб -- 09.04.2016
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8. Follow Up - an Astronomy Net Observation_reports Forum Message
Astronomy Discussion Forums . Forums: . ... Discussion Forums . ... Follow Up . Forum List | Follow Ups | Post Message | ... Login to Post . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...
[ Сохраненная копия ]  Ссылки http://www.astronomy.net/forums/observation_reports/messages/269.shtml -- 13.0 Кб -- 09.04.2016
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9. http://www.atnf.csiro.au/pub/people/jreynold/twaa96/summary.ps.gz
... From Hayo Hase (IfAG) That the APT and APSG; recognizing the need for a high precision global reference frame for APT and APSG regional projects, understanding that modern space techniques ( VLBI , SLR, GPS, PRARE, DORIS) together with other measuring techniques (gravimetry, seismography, meteorology, tide gauging) contribute in the most efficient way, when all ...
[ Текст ]  Ссылки http://www.atnf.csiro.au/pub/people/jreynold/twaa96/summary.ps.gz -- 12.9 Кб -- 06.02.1997
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10. ESO - ESO sky correction tools
... Publications with ESO Data . ... The tools have been developed for ESO by a team of astronomers at the Institute for Astro- and Particle Physics at the University of Innsbruck, as part of an in-kind contribution to ESO , which includes as well a model of the sky emission and transmission spectrum at Cerro Paranal. ... Skycorr provides an advanced instrument-independent sky-correction tool that removes sky emission in science spectra by means of sky spectra taken at a different time and sky location....
[ Сохраненная копия ]  Ссылки http://www.eso.org/sci/software/pipelines/skytools/ -- 29.4 Кб -- 12.04.2016
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11. *display, xdisplay* -- Displaying an image in detector coordinates
Next: *xexamine* examine Up: *display, xdisplay, xexamine* - Previous: To display other sizes . The following command will display a .qp file in the original detector coordinates. In this case a ROSAT PSPC image is used so it is also blocked to a reasonable size: . xp> xdisplay ``xdata$rp110590.qp[block=30, key=(detx, dety)]'' . ... xp> xdisplay ``xdata$rp110590.qp[block=15, key=(detx, dety)] [1:512,1:512]'' . ...
[ Сохраненная копия ]  Ссылки http://hea-www.harvard.edu/PROS/PUG/node75.html -- 4.0 Кб -- 01.10.2012
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