... Science . ... Science Users Information > Science Publications > Science Announcements . 10 Apr 2016 jump to navigation jump to content . ... ALMA . ... Observing with ESO Telescopes . ... Public Surveys . ... ESO-MIDAS . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... ESO Data Access Policy . ... Science Announcements . ... Published: 26 May 2014 . ... A brief description of the ALMA calibrator survey was recently published . ... Published: 23 Apr 2014 . ...

... NICS will be the only infrared instrument for the first light of the TNG; as a consequence, we decided to incorporate a sufficient degree of operation flexibility by providing the instrument with six different observing modes, three aimed at imaging and three at spectroscopy: . ... It will be possible to use the narrow band filters as order sorters; this will allow to perform high resolution long-slit spectroscopy in the wavelength ranges covered by the available narrow band filters. ...

... HST . ... Data . ... HST Overview . Overview . ... Instruments . ... Instrument Handbook . COS Data Handbook . ... For more information about the use of this FP-POS option see Section 5.8.2 of the COS Instrument Handbook. ... COS has the advantage of a fairly large aperture so that there are only small aperture losses ( see Section 5.1.9 of the COS IHB). ... The available spectroscopic resolving powers (R) available to observers with COS are listed in Table 5.1 of the COS Instrument Handbook. ...

... The calibration of astrophysical spectra in wavelength based on calibration lamp data suffers from different kinds of uncertainties. Besides inaccuracies in the observational phase, common data reduction practice adds ``pixelation'' errors, due to the fact that the centering method does not use the correct PSF. These model mismatch errors depend, for a given feature, on the sub-pixel location of the line center (David & Verschueren, private communication). ...

... We will consider the rms, (K), for observations with a receiver of system temperature, T , frequency resolution, per polarization, and total integration time per observing cycle, . ... For ``in-band'' frequency switching, the line under investigation is always in the observing band. ... Position Switching or ``Out-of-Band'' Frequency Switching: Here the line is only observed for one half of the time, with noise being present all of the time. ...

The ASKAP Early Science Program Updated Plan v1.1 ­ for community discussion Dr. Lisa Harvey- Smith | ... Lisa Harvey- Smith What is ASKAP Early Science? ... Lisa Harvey- Smith The Early Science Program · A wide area continuum survey (1 MHz and 18.5 kHz resolution, full Stokes, 700-1800 MHz, 6-12 hours per field) · A few 30 square degree fields studied in neutral hydrogen (18.5 kHz resolution, 1150-1450 MHz, 120 hours integration time per field (TBC). ... Lisa Harvey- Smith What Next? ...

... Bojan Nikolic web pages (r. 329) . ... We present a Bayesian approach to calculating the coefficients that convert the outputs of ALMA 183 GHz water-vapour radiometers into estimates of path fluctuations that can be used to correct the observed interferometric visibilities. ... Inference of Coefficients for Use in Phase Correction . ... Simulating Atmospheric Phase Errors, Phase Correction and the Impact on ALMA Science . ... Copyright 2005 -- 2016, Bojan Nikolic feedback welcome ...

... Home Gallery Club Events AAA president Marcelo Cabrera presents AAA Amateur Astronomers Medal to Al Nagler of TeleVue Optics with AAA vice-president Susan Andreoli. ... A History of the First Forty Years of the Amateur Astronomers Association . ... AAA president Marcelo Cabrera presents AAA Amateur Astronomers Medal to Al Nagler of TeleVue Optics with AAA vice-president Susan Andreoli. by . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... The following charts/text are intended as tools for monitoring the Type Ia supernovae ( SNe ) event visually or photographically (utilizing telescope equipped CCD equipment).The files include: A replication of The Type Ia SNe , V- magnitude (with data point checks from other cited references)and color index (B-V) templete (to indicate a general color-related trend of the type Ia ... I believe this might help alleviate some of the problems involving the making of acceptable amateur light curves...

Next: Radial velocity of the Up: Optical spectrum of IRAS04296 Previous: Observations and spectra reduction . ... However, molecular emission features are only very rarely observed in the optical spectra of PPNe. ... On the other hand, it is well known that cometary nuclei spectra show prominent Swan band emission. In both spectra of IRAS04296 we have discovered strong emission in the (0;0) and (0;1) bands of the Swan system of the molecule. ... Now consider the case of IRAS04296. ...

... the time of observation . ... Observing the Changing Position of the Sun To Establish Cardinal Directions . ... Observations of the Sun's apparent movement across the sky and its pattern of rising and setting in the east and west horizon helped to establish the cardinal directions. ... The final stage of the Sun's return was marked by the observation that the Sun had reached its highest altitude when the full width of your mitted hand could fill the gap between the Sun and the horizon. ...

... Tonight's Sky . ... News . ... Sky this Month . ... Star Atlas . ... New high-resolution atlas of asteroid Vesta is available to the public . ... Scientists have released a high-resolution public atlas of the asteroid 4 Vesta. ... An atlas of the asteroid 4 Vesta, which scientists created from images taken during the Dawn Mission s Low Altitude Mapping Orbit (LAMO), is now accessible for the public to explore online. ... Only registered members of Astronomy.com are allowed to comment on this article...

... Comet Ikeya-Zhang, designated C/2002 C1 (Ikeya-Zhang), is named after Kaoru Ikeya of Shizuoka prefecture, Japan, and Daqing Zhang of Henan province, China, who independently discovered it on the night of 1 February 2002. A preliminary orbit reported the following day indicated that it would come moderately close to both the Earth and the Sun and that it might become visible to the naked eye during late March and April 2002. ... Bailey, M.E., Clube, S.V.M. and Napier, W.M. The Origin of Comets . ...

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. ...

... Cheers, -Mike Data Providers (e.g., data centers, archives) Provider Name: NOAO Collection: High Resolution Atlas of Arcturus Spectra - 0.92-5.36 microns Characteristics: 310 ASCII tables of wavenumber vs flux Storage Format: Text tables Available online: ftp://ftp.noao.edu/catalogs/arcturusatlas/ir Comments: Tables contain three flux values (arcturus spectrum, telluric spectrum and ratio) for both summer and winter observations. ... Linelists also available as text table ...

Peremennye Zvezdy ( Variable Stars ) 26 , No. ... Moscow 119992, Russia . ... 84/32, Moscow 117997, Russia . ... Our CCD observations compared to times of minima derived from the archival photographic plates and from the NSVS and ASAS-3 data clearly show that the orbital period of the system is variable. ... The phased light curve for the light elements . ... CCD, Moscow . ... and for the current linear light elements (in excellent agreement with the NSVS, ASAS, and our CCD observations): . ...

... Meade Instruments Corporation . ... Choosing the Right Microscope . ... On most microscopes the specimen glass remains fixed while the microscope's objective lens and eyepiece move as a unit up or down to focus the image. ... Eyepieces of varying powers work with objective lenses of varying powers to yield a range of microscope magnifications. ... Magnification: The effective magnification of a microscope is determined by multiplying the eyepiece power by the objective lens power . ... about meade |...

. The Gemini multi-conjugate adaptive optics system (GeMS) deploys five laser guide stars and up to three natural guide stars, for better-than-Hubble resolution of ~ 90 milli-arcseconds in Ks-band across the field of view of the RSAA-built Gemini South adaptive optics imager (GSAOI). I will present a user s view of observing with this complex instrument, and make recommendations for getting the most out of your GeMS/GSAOI data.

... ARC 3.5m | Instrument Summary . ... ARCES (Echelle) : the ARC Echelle spectrograph, a high resolution (R~31,500) echelle spectrograph that observes the entire wavelength range from 3200 е to 10000 in a single image on a 2048x2048 CCD. This instrument is permanently mounted at the NA1 port. ... In addition to the facility instruments, several visitor instruments have been used at the 3.5m, and some of these are available to the ARC observing community by contacting the instrument PIs: . ...

... Conference . ... for optical telescopes of small and medium size (up to 3-m in aperture) to be discussed. Current Status and New Projects of Small- and Medium-Size Optical Telescopes . ... Science with Small- and Medium-Size Optical Telescopes . ... 12 May 2015 - First announcement . 1 June 2015 - Registration opens . 10 June 2015 - Abstract submission opens . ... 10 September 2015 - Programme available . 19 October 2015 - Conference opens . 22 October 2015 - Conference closes . ...