... 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. ...