... ACS Instrument Handbook . ... Advanced Camera for Surveys Instrument Handbook for Cycle 20 > Chapter 7: Observing Techniques > 7.5 A Road Map for Optimizing Observations . ... Dithering and CR-SPLIT ing more than the minimum recommended values tends to yield higher quality images with fewer residual detector defects, hot pixels or CR signatures in the final combined image. ... In general, dithering with sub-pixel steps increases the number of individual exposures required to eliminate CR hits. ...

The VLTI Calibrator Selector Tool is a tool intended to assist in the selection of suitable interferometric calibrators for VLTI observations with MIDI and AMBER. It uses a model of the VLTI and its instruments to assess the fringe visibility, given the observed bandpass, the geometry, spectrum, and coordinates of the target and the time at which the observations are to be made. ... The tool offers an HTML/Java based interface and consists of two pages. ... The quality flag depends on LDD_chi2. ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Coronado€о Solar . ... Spotting Scopes . ...

... Second, the observatory can control the configuration, test data analysis procedures, and provide calibration solutions with the help of instrument models. This paper presents the VLT object-oriented framework for the development of ETCs (Exposure Time Calculators) and data simulators. ... Instrument simulations are being developed for the purpose of predictive calibration, instrument configuration control, and evaluation of data analysis procedures. ...

SETUP : For service mode observations within the SOLARNET Access Program, ROSA and IBIS can be utilized either as stand alone instruments, or combined together. ... PROPOSAL STRUCTURE: Proposals should include up to max 2 pages, including a scientific rationale and technical requests (detailing i.e. spectral filters and wavelength sampling). ... For the case of joint IBIS and ROSA observations, proposals should indicate which instrument is to be considered as the primary one. ... SOLARNET Access . ...

XMM-Newton Science Analysis System Page: 1 rgscombine August 16, 2005 Abstract Combines a list of spectrum les to create one combined spectrum le, and the corresponding list of response matrices and background spectrum, to create one nal response matrix and background spectrum le, for a paticular RGS instrument and spectral order. ... A list of response matrix les, as produced by rgsrmfgen or rgsproc. A list of background spectrum les as produced by rgsspectrum or rgsproc for TOTAL spectra. ...

Magnetic field measurements onboard the Interball Tail spacecraft are carried out by the FM-3I instrument which consists of two flux-gate magnetometers covering two different ranges: [-200, +200] nT and [-1000, +1000] nT. Besides scientific goals, the FM-3I experiment data is used to perform the attitude control of the Interball Tail spacecraft. ... August 22, 1995 . ... October 18, 1995 . Top of the page . ... Back to the Interball Home Page . ...

Multifrequency Observations of S­Z Effect toward clusters of galaxies M. De Petris et al. ... We describe a dedicated instrument (MITO) consisting of a 2.6­m telescope operating at 3500 m a.s.l. in the 2.1, 1.4, 1.1 and 0.8 mm channels with ё 10% bandwidths. Forthcoming results to­ ward A1656 cluster are reported and discussed in terms of thermal and non­thermal components. ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

... Table of instrument observation dates: . Instrument Exposure time Date Julian Date XTE Master There are 47 observations from this instrument, ranging from 1997-02-08б 14:15:15.6 (2450488.093 UTC) to 2005-05-14б 12:03:56.7 (2453505.002 UTC) and all above 10,000 seconds exposure time (from 10046 sec to 54910 sec). ... Blue arrows designate X-ray observation times. Red arrows designate HST observation times. ... Table of instrument observation dates and integration times: . ...

... R2696 Date Received: 2011-Oct-24 12:04:39 Technical Page Proposal Type: General Category : Observation Category : Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Planetary Radar Solar System 32 Hours Bistatic Radar Observations of the Moon with the Lunar Reconnaissance Orbiter The Arecibo Planetary Radan Transmitter combined with the Mini-RF radar instrument in lunar orbit enables a ...

Next: Mapping of FITS Up: The Data Organizer Previous: Overview of the . The Data Organizer uses as input a list of FITS files or MIDAS images as well as a list of MIDAS descriptors which are considered to be relevant (e.g., exposure time, telescope setting, instrument mode). Each of these descriptors is mapped into one column of a table that is called the Observation Summary Table (OST), and the corresponding information for a given input file is stored into one of its rows. ...

... Spectral regions highlighted by green bars have been used to detemine the тЯиB z тЯй value from H Balmer lines, and the magenta bars highlight the spectral regions used to estimate the magnetic field from metal lines. ... The FORS1 instrument of the ESO Very Large Telescope was used to obtain low resolution circular polarized spectra of nearly a thousand of different stars, with the aim of measuring their mean longitudinal magnetic fields. ...

Quasar VLBI network observatories as co-location sites A. Ipatov, I. Gayazov, S. Smolentsev Institute of Applied Astronomy, Saint Petersburg, Russia ... supposes: 1. installation of different observational techniques at sites (co-location) 2. combined processing of different types of observations (collocation) IAA activity in space geodesy · Quasar VLBI network : ­ VLBI observations ­ GPS /GLONASS observations ­ DORIS ( ...

The large magnetic cloud caused by coronal mass ejection at the Sun on January 6, 1997 came to the Earth at early morning on January 10 and continue to interact with Earth's magnetosphere till January 11 (see for example home page of this event prepeared by Dr. M.Peredo http://www-istp.gsfc.nasa.gov/istp/cloud_jan97/event.html ). ... During the days discussed here INTERBALL-1 satellite was in the magnetosphere (MS) near its dusk flunk - see the Fig. 1 for compearing. ...

... Recent Results . ... last 10 years in ADS) . in SAO press releases . ... observations database) . ... Last update: . ... Measurement of the dark halo shape in polar ring galaxies . Determining the mass of supermassive black hole in galaxy Mrk6 nucleus based on spectropolarimetric observations . The dust jets in the nucleus of comet 29P/Schwassmann-Wachmann 1 . ... New Polar Ring Galaxies . Traces of recent interactions in isolated Seyfert galaxies . ...

GRANAT is the Russian x-ray sattelite launched to the high apogee orbit (200,000 km) and operated almost for 10 years (1989 -1999) , carrying out four major instruments: French SIGMA coded-mask hard x-ray telescope (30-1000 keV), Soviet ART-P coded-mask telescope (2??-60?? keV), all-sky monitor WATCH (6-150 keV), and a gamma-burst detector PHEBUS . ... Since September 1994, GRANAT is in the survey mode. ... Explore pages devoted to individual GRANAT instruments (including main scientific results): . ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . ... Last Update August 22, 2005 . Listed Since August 31, 2001 . ... Novosibirsk, ZZ 630049 . ... Web Site . ... Web . www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Because of the potential impact of poor weather on 3mm observations, the ATCA has used a "swap" system of flexible scheduling for these observations. ... This was both to encourage more proposals that could be used as swaps and to reduce the burden of swapping (the swap system tends to discriminate against the centimetre observer). ... For example Directors Time could be used for 3mm proposals if there was no bad weather (this would not be possible if a centimetre swap were mandated). ...

This describes the exposure window used by each instrument (the graphical interface for the hub's expose command). ... To open the expose window for a given instrument, bring up that instrument's main window, then press the Expose... button along the bottom. ... The top panel shows the status of the current exposure sequence (regardless of who started it). ... File: the file name for the current exposure, or the most recent exposure if not exposing. ... Download: exposure download preferences. ...