... Satellite Detection in Advanced Camera for Surveys/Wide Field Channel Images (ISR 16-01) . ... Post-Flash Calibration Darks for the Advanced Camera for Surveys Wide Field Channel (ACS/WFC) (ISR 15-03) . ... Calibration of ACS/WFC Absolute Scale and Rotation for Use in Creation of a JWST Astrometric Reference Field (ISR 07-07) . ... Bias and dark calibration of ACS data (ISR 04-07) . ... ACS WFC and HRC field-dependent PSF variations due to optical and charge diffusion effects (ACS ISR 03-06) . ...

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... ATNF Home . ... About ATNF overview . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Symbols show the initial galaxy classification types: Starburst galaxy and emission-line AGN. ... Diagnostic line ratios for [NII] 6583/H , [SII] . ... The diagnostic diagrams reveal that the majority of our narrow-line galaxy sample has [NII] 6583/H , [SII] 6716+ 6731/H and [OI] 6300/H ratios which straddle the region dividing AGN and starburst galaxies. ...

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• Standard System Transformations
• The light curves
• D Annotation File Format

XMM­Newton CCF Release Note XMM­CCF­REL­250 RGS Background Spectra Templates R. Gonz’alez­Riestra March 12, 2009 1 CCF components Name of CCF VALDATE EVALDATE Blocks changed XSCS flag RGS2 TEMPLATEBCKGND 0006 2007­08­17T00:00:00 -- X100 P090 1 0.00.. ... The update of this CCF was required due to the implementation of the single­node readout mode for RGS2. ... The figure shows the RGS2 spectrum of the galaxy cluster Abell 1413 obtained in November 2007, that was taken in single­node readout mode. ...

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• http://xmm.vilspa.esa.es/docs/documents/CAL-SRN-0289-2-1.ps.gz
• http://xmm.vilspa.esa.es/docs/documents/CAL-SRN-0120-1-0.ps.gz
• Parameters

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Irvin M. Winer . ... Weather . ... RainWise Mk III / 100m SW of Observatory . ... RainWise Mk III / N=0 ,E=90 ,S=180 ,W=270 . Air Temperature . ... 0.0 0.36 ( F) . ... AAG IR Sky Temperature . ... AAG Adjusted IR Sky Temperature . ... AAG Ambient Temperature . ... AAG Temperature Split . ... AAG Adjusted Temperature Split . ... Clear Sky Clock for Winer Observatory is provided by Attilla Danko. ... 2013 Winer Observatory. ...

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Phase Calibration/Correction for ALMA B. Nikolic Cavendish Laborator y, University of Cambridge 1st December 2008 Algorithms 2008 Workshop, Oxford B. Nikolic (University of Cambridge) Phase calibration for ALMA December 2008 1 / 27 Outline 1 Phase errors in the mm/sub-mm ALMA Phase Correction Plan Fast-switching WVR Phase Correction Algorithms! ... 2 3 4 B. Nikolic (University of Cambridge) Phase calibration for ALMA December 2008 21 / 27 Algorithms! ...

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• http://www.mrao.cam.ac.uk/~bn204/mk2/publications/2009/NikolicURSI09.pdf
• http://www.mrao.cam.ac.uk/~bn204/mk2/publications/2009/NRAOJan09followup.pdf
• http://www.mrao.cam.ac.uk/projects/OAS/pmwiki/uploads/MROIFastTipTilt.Requirements/budgets.pdf

The Earth's Orbit . The shape and orientation of the Earth's orbit around the Sun are also changing, under the influence of the other planets. ... The perihelion and aphelion are precessing, advancing eastward along the ecliptic about 11 arcseconds per year in relation to the fixed stars. ... The change in eccentricity, plus the changing relation between the perihelion and aphelion of the Earth's orbit and the equinoxes and solstices, change the duration of the seasons. ...

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• ASP: The Nearest Stars: A Guided Tour

... Here is a sample parameter file that is set to plot the B filter trace data. ... One can generally get by with the default graph parameters. input = B.a list of images or list files to be graphed (wx1 = 3000.) left world x-coord if not autoscaling ... autoscaling (wy2 = 100.) upper world y-coord if not autoscaling (wcs = logical ) Coordinate system for images (axis = 1) axis along which projection is to be taken (transpose = no) transpose the x and y axes of the plot (pointmode = no) ...

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• ARC 3.5m | TRIPLESPEC
• photometric optical design

Next: ST-ECF Grism Spectrum Software Up: NICMOS Data Calibration and Previous: Photometric Performance of NICMOS . ... Wavelength Calibration of NICMOS Grisms . ... This article describes the wavelength and throughput calibration of the grisms and discusses the photometric performance of the NICMOS grism mode. ... The resolution of the first order spectra on all grisms is about 200 per pixel. ... Spectra were extracted for bright objects with both first and second order spectra on single grism images. ...

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... Received 2005 May 31; in original form 2005 February 15 ABSTRACT A numerical study of an ensemble of orbits based on observed objects in the near-Neptune high-eccentricity (NNHE) region, with perihelion distances q in the range 28 < q < 35.5 au and semimajor axes a in the range 60 < a < 1000 au, is used to predict the orbital distribution of Centaurs (5 < q < 28 au) for comparison with observations after correcting for discovery biases. ... The debiased a distribution for observed Centaurs. ...

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• http://star.arm.ac.uk/preprints/2010/568.pdf
• Observing times | International Year of Astronomy in Ireland | Astronomy 2009
• Spectrum - control

... This paper presents an overview of the CENTERFIT image centering algorithm library currently under development in the IRAF system. ... The centering algorithms employed by these applications must satisfy a wide range of efficiency and accuracy requirements, and function robustly on data sets spanning a broad wavelength, resolution, and signal-to-noise regime. This paper presents an overview of CENTERFIT, a library of 1-D and 2-D centering algorithms currently under development in the IRAF system. ...

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• WIP -- An Interactive Graphics Software Package

... 1 Poisson Goodness-of-fit 2 Question 1: What physical model parameters b est fit the data, and what are their uncertainties; Question 2: What is the evidence for an additional comp onent of known shap e (such as a line in an an energy sp ectrum or a p oint-source in an image); Question 3: Is this b est-fit good enough; and Question 4: If the fit is not good enough how does one quantify the unknown additional structure in the image and the uncertainties in this structure? ... CGRO/EGRET data. ...

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• ChaMPlane
• Funtools Programs