... Multiple exposures with small offsets in the pointing of the telescope are usually necessary or recommended for NICMOS observations. ... Dithering or chopping to measure the background associated with an -astronomical source. Mosaicing to image a source larger than the NICMOS field of view. ... Background images will be obtained by offsetting the telescope from the target to point to an "empty" region of the sky. ... Two distinct type of telescope motion are defined: . ...

... Donate to Support Science Literacy . ... 2016 Annual Awards . The ASP is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach. ... Shop the AstroShop . ... The Astronomical Society of the Pacific (ASP) is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach.. ...

... The processing of these associated images presents new challenges to the HST data processing pipelines, which heretofore operated only on single images. ... Stage 1 (CALNICA) calibrates individual exposures without information from other members of the association. ... Stage 2 of calibration (CALNICB) only operates on associated images that have previously gone through CALNICA processing, and creates combined images for each distinct (non-overlapping) pointing within the association. ...

SAI 175 anniversary . ... Moscow University . Search for in SAI Moscow University Search for in Russian astronomical resources . ... SAI Astronomical Databases . ... Browse SAI Software archive(ftp.sai.msu.su) . ASTRONET.RU - Russian Astronomical Network (available in translit also) . ... SAI Supernovae Research Group . ... Department of the Galaxy and Variable Stars (in Russian) . Sternberg Astronomical Institute Seminars . ... All-Russian Astronomical Olympiad (in Russian) . ...

... Club By-laws . ... Other Club Activities . ... Public Nights . ... Dr. James Green, NASA, Director Planetary Science will be our esteemed speaker on Tuesday, April 12, 2016 at 7:30 PM in Peyton Hall on the Princeton University campus. ... Our astronomers setup telescopes for public use at Communiversity in Princeton, Super Science Saturday at the NJ State Museum in Trenton and at various public events around Mercer County. ... Amateur Astronomers Association of Princeton, Inc., ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

Twilight observations with MASS/DIMM B. Safonov Sternberg Astronomical Institute Moscow State University Comprehensive Characterization of Astronomical Sites, 2010 B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 1 / 17 Why observe in twilight with MASS/DIMM? ... ASM includes 3 devices sensitive to background: guider, DIMM and MASS. B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 2 / 17 Background in guider. ...

... A data set contains a science frame and all its associated calibration frames. In order to archive a maximum of efficiency the CCD package uses a simple and straightforward naming convention: the names of the data sets are identical to the names of the science frames. ... By combining the calibration frames of a particular exposure type ( e.g. bias) the user can create a master calibration frame. ... Below follows a listing of calibration frames that currently can be handling in the CCD package. ...

The AstroGuide . ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . ... Buffalo Astronomical Association, Inc. The BAA is an organization composed of people who share, in common, a love of the starry firmament and the wonders of the universe. ... Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Staff list | ... Australia Telescope Online Archive (ATOA) . ... VLBI . ... Arch | ... CSIRO ATNF Data Archives . ... This message : [ Message body ] [ More options ( top , bottom ) ] . ... Subject: Re: The East Asian Core Observatory Association (EACOA) is calling for application for a new fellowship . ... VLBI project with the Greenland Telescope which is managed to be established in Greenland. ...

... The STScI NICMOS Calibration Pipeline Howard A. Bushouse Space Telescope Science Institute, Baltimore, MD 21218, Email: bushouse@stsci.edu Elizabeth Stobie University of Arizona, Steward Observatory, Tucson, AZ 85721 Abstract. ... This paper describes the FITS file format used for NICMOS data, which in­ cludes error estimate and data quality arrays for each science image, and describes the approach used to associate multiple observations of a sin­ gle target. ...

Peremennye Zvezdy ( Variable Stars ) 33 , No. ... The new variable star HD 305629, with a Cepheid-like light curve, is demonstrated, from our optical observations and ASAS-3 data, to actually be an ellipsoidal variable star on a highly eccentric orbit. ... During a systematic search of variable stars in the publicly available ASAS-3 database (Pojmanski 2002), apparent variability was found in the star HD 305629 (10 51 34 35, -60 47 57 4, J2000.0; Fig. ... The light curve and color curves of HD 305629. ...

Status of the RadioAstron project development . The engineering model of the Space Radio Telescope (SRT) was assembled in Lavochkin Association (LA) in the configuration consisting of 10-m parabolic radio astronomical antenna made of carbon-fiber, F ocal and Device cabins of the scientific payload and on-board and ground complex of high data rate up-down radio link (VIRK). ... Then,radio astronomical tests were conducted using real radio sources. ... Space Radio Telescope . ... Data Processing . ...

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.

... LINKS . ... Founded in 1971 by a group of enthusiasts and star aficionados, our association is now counting more than 130 members.As a national association we attract hobby astronomers from the whole country to our regular night-sky observations and to the meetings in our club at Dudelange. ... Club News . ... by topic : PDF File Download (360KB) . by title : PDF File Download (640KB) . ... Article about AAL in "Le Quotidien" newspaper of Juli 21 2005 - PDF File Download (132KB) . ... SOME LINKS . ...

COMPETITION ­ FREE ENTRY IRISH ASTRONOMICAL ASSOCIATION / IYA 2009 As part of International Year of Astronomy 2009, the Irish Astronomical Association is pleased to announce a major public competition, with substantial prizes, for all ages, and in various categories, so that anyone can enter. ... Senior: 16 years of age and above. ... Prizes: there will be prizes for First, Second and Third best entries in each of the 5 categories above, in each of the three age groups, totaling 45 prizes. ...

Euro-Asian Association of Astronomy Teachers . ... Dr. Michael G. Gavrilov , Chairman of Euro-Asian Association of Teachers of Astronomy . The main purpose of the Association is to improve and promote astronomical education at all levels in all institutions involved in teaching astronomy in the states of Euro-Asian Astronomical Society. General information about EAATA: in Russian, . ... The First Euro-Asian Congress of Teachers of Astronomy (Chernogolovka, December 10-14, 1998). ...

... This thread contains a step-by-step recipe to extract MOS spectra of a point-like source observed in Imaging mode and to create associated response matrices, starting from a calibrated, concatenated event list (either produced with emproc or available as PPS product; here it has the assumed file name MOS.fits ). ... The users should note that the SAS metatask xmmselect allows them to interactively define source and background regions (via ds9) and to run backscale on the fly. ...

... ASTROPHYSICS AND COSMOLOGY AFTER GAMOW - THEORY AND OBSERVATIONS . Gamov Memorial International Conference dedicated to 100-th anniversary of George Gamow . Odessa, Ukraine, August 8-14, 2004) . ... Professor G.S. Bisnovatyi-Kogan ( Moscow, Russia ) . ... Professor A.I. Zhuk ( Odessa , Ukraine ). ... Conference secretary : O.D. Toropina ( Moscow, Russia ) . GAMOW MEMORIAL COMMITTEE: . ... CONFERENCE SESSION: . ... Plan of arrangements dedicated to 100-th anniversary of George Gamow . ...

... 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. ...