Next: NICMOS/HST H-band (F160W) Images Up: NICMOS Science Previous: HST NICMOS Observations of . ... Observations of P . ... The NICMOS team has devised a comprehensive program of observations of the Galactic Center. ... Data in hand give a first look at variability and a detailed look at the search for the tip of the main sequence will be discussed where NICMOS has demonstrated adequate sensitivity and photometric precision to identify likely O8-B1 stars at the Galactic Center. ...

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... Observing . ... Home Education Workshops at Adorama Astronomy Workshop: Observing Variable Stars from the City ? February 15, 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Presented by€а Adorama €аFor the Amateur Astronomers Association of New York . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

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... Start time is 13:30 *VS10f Dec 16 HO Unavailable *VS04u Jan 26 CANCEL *VS06a Jan 27 CANCEL *VS09m Feb 23 HH Unavailable EXPNO SOURCE FRQ Corr DOY DY: DATE UT RANGE #TEL TELESCOPES W030i J2207-53 C Mitk 320 Mo: Nov -16 06:00 - 15:00 3 HH AT HO V026b2 3C120 C Socr 323 Th: Nov -19 00:00 - 13:00 19 VLBA NT TR EB JB MC WB Y SH ON V120b V137b W058f J2136+00 C Socr 323 Th: Nov -19 23:00 - 07:00 12 VLBA KA SH V043b 3C111 C ...

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• The pulsation sequences
• UV Variables
• Observed period-luminosity sequences

... HSP photometric accuracies are strongly dependent on the observational setup and observing conditions, such as spacecraft jitter. Absolute photometry can be done only with a one sigma limiting accuracy of approximately 5%, but relative photometry is possible with an accuracy of 1-2%. Estimated HSP Calibration Accuracies . Absolute Timing . ... Relative Timing . ... 1991 through summer 1993 monotonic decrease, . ... Absolute photometry . ... 5% (one sigma) . ... Relative photometry . ...

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• Future Calibrations, Calibration by Observers, and Calibration Outsourcing
• Proposing Overview
• Dither Strategies

... P2864 Arecibo Observatory Date Received: 2013-Sep-03 16:15:21 William E. Gordon Telescope Observing Time Request COVER SHEET Section I - General Information Submitted for Sep 1 2013. ... We are requesting a total of 70 hours of observations at L-band over the course of one year, with an observation per day for the first ten days, then additional observations taken approximately once every other week there after. ... For these observations night-time is not needed. ...

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• http://www.naic.edu/vscience/schedule/2015Fall/HeilestagA2980.pdf
• http://www.naic.edu/vscience/schedule/2016Spring/WolszczantagP3033.pdf
• http://www.naic.edu/vscience/schedule/2014Spring/RankintagP2865.pdf

Peremennye Zvezdy", . ... Star Name: . 2MASS 17381738-1835271, IRAS 17353-1833 . ... During observations of a field in Ophiuchus, we discovered a possible new FU Ori-type variable star. ... For search and photometry of new variable stars, we applied VaST software by Sokolovsky and Lebedev (2005). ... During the first observing season (2009 May 16 2009 July 24), the star experienced an optical burst with an amplitude exceeding 1 m .5. ...

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• Unexpected Comet Pojmanski Now Visible
• Астронет > Unexpected Comet Pojmanski Now Visible

... The scheduling routines assist in creating an observing list (stored in the startable) from scratch or from another list stored on disk, and computing the visibility of the stars in a specific night and array configuration. The date of observation is taken from the variable date , and the array name from the variable systemid . If these are not defined, defaults are used for date (the next night) and for array (NPOI). ... addstar , stars _char Add one or more stars to the startable. ...

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• ESO - I see unexpected boxy emission-like features in my REDL spectra - where
• ESO - Gasgano
• ESO - ALMA

... Actual stars are expected to be more complicated than these simulations. ... The spot may be entirely visible most of the time (one would observe a prolonged flux minimum low), and then part of it may disappear over the horizon briefly and then return (slow rise and then fall back to constant level). ... With the set of observations taken here, I have information available from several comparison stars and color information. ... The period found must be consistent with the data from any given night....

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• Topics in AstroStatistics
• Windowing
• Stat Jargon

ARCSAT ID NUMBER: AS07 DESCRIPTIVE TITLE: Census of Variable stars in the UMi dwarf spheroidal galaxy. ... BRIEF SCIENCE JUSTIFICATION: The classical dwarf spheroidal galaxy Ursa Minor contains a large number of variable stars, particularly of the RR Lyrae and anomalous Cepheid types. ... The photometry will be done with DAOPHOT, much like the Nemec study, and the analysis of the RR Lyrae population will be similar to the work done with the Draco dwarf spheroidal galaxy (Kinemuchi et al. ...

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• http://www.apo.nmsu.edu/Telescopes/ARCSAT/ObsSchedules/arcsat_feb2015/AS01.html
• http://www.apo.nmsu.edu/Telescopes/ARCSAT/ObsSchedules/arcsat_may2015/AS06.html
• http://www.apo.nmsu.edu/Telescopes/ARCSAT/ObsSchedules/arcsat_may2014/AS01.html

... In order to disentangle the effects of different climate variables on tree-ring growth rates of different species, and to explore the possibility that more than one species could improve the accuracy of the reconstructions of climate using tree rings, a methodical study of trees in close proximity to the Armagh Observatory climate station was initiated together with Ana Maria Garc?a Su?rez, and continued as part of the latter's PhD thesis with John Butler and Professor Mike Baillie (QUB). ...

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• Leonid Meteors
• Armagh Observatory
• Leonids 2006

... 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. ...

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• The Co-Addition Technique Applied to Images of Galaxy Cores
• Heuristic Estimates of Weighted Binomial Statistics for Use in Detecting Rare
• RoadRunner: An Automated Reduction System for Long Slit Spectroscopic Data

IBIS Data Analysis . ... IBIS . ... Flat Fielding - Introduction . The images obtained by IBIS will have intensity variations across the field of view that are not due to the solar image, but rather caused by instrumental effects that alter the observed intensity in each point of the field of view. ... IBIS Flat Fielding Techniques . ... Therefore, it is desirable to obtain the flat field measurements center on a point along the equator near the heliographic center of the solar disk. ...

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• K-band Arcetri Obscured Supernova Search - What is the KAOSS Projrect?
• INFRARED CAMERA SPECTOMETER TNG
• Observing capabilities

Next: The Newton--Raphson Method. Up: Fitting of Data Previous: Fitting of Data . ... In a linear problem, if the errors on the observations have a gaussian distribution, the ``Maximum Likelihood Principle'' gives you the ``best estimate'' of the parameters as the solution of the so-called ``Least Squares Minimization'' that follows: . ... A certain number of numerical methods have been developed to solve the non--linear least squares problem, four have so far been implemented in MIDAS. ...

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• Variable radio sources
• Radio survey for new compact HII regions
• All Sky Catalog at 2.7 GHz

... 2006 March 6 . Unexpected Comet Pojmanski Now Visible . ... Explanation: Have you ever seen a comet? ... Comet Pojmanski , officially designated C/2006 A1 and discovered only in January, now sports a turquoise tail several times longer than the full moon. Comet Pojmanski 's ion tail is due to gas particles expelled by the comet being pushed away from the Sun by the solar wind , the same wind that ionizes gas in the tail causing its blue tint. ... About APOD | ... NASA Official: Jay Norris. ...

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• APOD: April 11, 1996 - Unexpected X-rays from Comet Hyakutake
• APOD: 2015 May 4 - An Unexpected Aurora over Norway
• APOD: 2008 October 20 - Moons, Rings, and Unexpected Colors on Saturn

... 2.3 Establishing the Extragalactic Distance Scale . ... 2.3.2 The Second Rung: Distances to stellar clusters . ... 2.3.4 Distances to Local Group Galaxies . ... The Luminosity Function of Planetary Nebulae . ... 3.2.2 Clusters of Galaxies . ... 4.2 Evidence for Dark Matter as a Function of Scale Size . ... 4.3 Other Dark Matter Indicators for Galaxies . ... What is the nature of the large-scale distribution of matter in the universe as traced by the three-dimensional galaxy distribution? ...

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• http://zebu.uoregon.edu/2004/es399/lec05.html
• Astro-2 and the UIT Experiment

... During the analysis of the surveys carried out on RATAN-600, it was found that almost one fifth of the detected sources shows significant radio flux variations. ... We used the data from "Cold" radio surveys carried out with RATAN-600 in 1980-1994 to search for radio sources with significant flux variability. ... On possibility of detection of variable sources using the data of Cold surveys carried out on RATAN-600. ... Detection of Variable Sources Using the Data of "Cold" Surveys. ...

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• Galaxy sector, archive 2012

PhD Thesis (PDF) . ... The evolution of stars and gas in galaxies. Observing the atomic neutral hydrogen (HI) 21 cm emission and radio continuum emission of galaxies. ... The goal of research is to quantify the neutral atomic hydrogen (HI) gas content galaxies as they evolve with time. ... Neutral atomic hydrogen gas produces a radio signal that can be used to directly measure the amount of gas present. ... USyd Summer Research Scholarship Report (PDF) . ... Research Topic Write Up (PDF) . ...

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• Cepheid Variables

... Astrophysics Group . ... COAST . COAST Astronomical Results . ... Surface Imaging of Betelgeuse . ... This page highlights some astronomical results obtained with COAST over the years. These are listed in chronological order (most recent first). ... Measurements of cyclic variations in the angular diameter of Chi Cygni . ... The first infrared image from an aperture synthesis array . ... The images of Betelgeuse below were reconstructed from COAST data taken in early 2004. ...

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• Bojan Nikolic -- Compiling CASA revisited
• VLBI observations of the quasar 3C380
• 1803+78: A Helical Core Jet

Next: CAL_getBoresightMatrix Up: Routines of the Calibration Previous: List of CCF Components Contents . ... The CAL functions CAL_getBadPixelList & CAL_getBadPixelMap use the CAL state variable temperature only to check that the current operating temperature is consistent with the CCF constituent BadPix . ... Used CAL State Variables . List of CCF Components used . ... Next: CAL_getBoresightMatrix Up: Routines of the Calibration Previous: List of CCF Components Contents Michael Smith 2011-09-20 ...

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• Generation from In-Orbit Data
• XMM Science Objectives
• Background: motivation for developing this procedure

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

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