The Cycle 11 calibration program will be defined a few months after the Phase II deadline for approved programs. ... In special situations it is possible that observers may find the STScI calibration programs do not meet their needs. ... In these cases observers may propose to obtain their own calibration data. ... During Cycles 9 and 10, two WFPC2 Calibration Outsource programs were awarded. ... Results of both programs will be disseminated via the WFPC2 WWW site, as results become available. ...

... The schedule for June and July 1998 is shown here. ... EXPNO SOURCE FRQ Corr DOY DY: DATE UT RANGE #TEL TELESCOPES VS03v J2246-12 C Pent 154 We:Jun-03 16:00 - 23:00 3 SH MP HO VS04v J0303-62 C Pent 157 Sa:Jun-06 06:30 - 11:30 3 HH MP HO V115e 2355-534 C Pent 157 Sa:Jun-06 23:00 - 06:00 3 HH MP HO VS06j VS03s J0106-40 C Pent 159 Mo:Jun-08 03:00 - 07:30 4 HH SH MP HO VS03b J2348-16 C Pent 159 Mo:Jun-08 16:00 - 20:30 2 UD HO V090a2 3C309.1 L ...

Next: RECEIVER CHOICE Up: Spectral-Line Observing at AO Previous: Spectral-Line Observing at AO . ... This involves deciding which receiver you wish to use, the observing procedure and parameters you wish to employ, what frequency range and set-up for the correlator boards you want, integration length, any equipment you may need to deal with RFI (filters, radar blankers, etc.), etc. ... These files are automatically saved into your project area on the ``observer'' computer. ...

Peremennye Zvezdy", . ... GSC 4232-02515, NSVS 3147658, NSVS 3174760 . ... 14.2-14.9 (R, NSVS); . ... During observations of a secondary eclipse of GSC 04232-02830 (Goranskij et al., 2005) on August 8, 2007, we identified GSC 4232-02515 as a W UMa eclipsing binary. ... VAST software was used for aperture photometry. ... This method produces a light curve with an arbitrary zero point. ... Light Curve . Light curve of GSC 4232-02515 in NSVS magnitude scale. ... gsc423202515_kadar_nsvs.dat . ...

... 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. ...

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. ...

... Science Users Information > Observing Facilities > La Silla Facilities > La Silla Science Operations . ... La Silla News . ... Internal Pages . La Silla Science Operations Department (LSO) is part of the La Silla Paranal Observatory and is in charge of the operations of the telescopes on La Silla. ... In the La Silla Science Operation pages, you should find all the information you need for your observations from the time you have an idea of observations until when you finish processing your data. ...

XMM-Newton SAS V5.1 Scientific Validation and Data . ... This page contains the Scientific Validation Report for SAS V5.1 (.ps.gz) as well as the data use for this validation. ... The SAS V5.0 Scientific Validation Page can be found here . ... Data Files Handbook (Issue 2.2). ODF/SDF Interface Control Document (Issue 2.9). The following datasets have been used for the Scientific Validation of SAS V5.1. ... Pipeline Products : Each Product Group is available separately as a .TAR file. ... ODF . ...

home publications > mercury . ... Astronomy Beat . ... Nearly four centuries ago, Galileo's simple observations of Earth's planetary sibling, Venus, buoyed the proponents of a Copernican universe. ... The Italian astronomer had settled into a new house in Florence and had begun to observe Venus, which in November 1610 would have appeared as an evening star, bright in the western sky after dusk. ... From these two observations, Galileo inferred that Venus must orbit closer to the Sun than does Earth. ...

... Site User's Guide (revised January 2015) . General Observing Information . ... An area map is available, as well as detailed directions from regional airports. ... APO does not recommend using GPS for directions to the site; please use the written directions below. ... APO/SDSS/NMSU Purchasing, Travel, Receiving, and Shipping Procedures . APO Site Safety Plan, V2.31 (current); APO Sprinkler and Shutter Procedures (pdf) . ... Roads to APO are all paved but are subject to heavy snow and ice. ...

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. ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

... The results of radio observations of GRB 080319B in the spectral range of 8.45 GHz are presented. ... Key words: Gamma­rays ­ bursts: observations ­ radio: individual: GRB 080319B 1 Intro duction Gamma­ray bursts (GRBs) are the most luminous explosions currently known in the Universe. ... Smooth angular scanning was used not only in GRB 080319B observations, but to specify the primary standard source radio flux density as well (Kharinov et al., ...

... 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...

... Advises . Contact Advises . As an advise for amateurs we would like to underline: if it's possible, try to observe 3 asteroid positions per night and do not neglect to observe the Numbered Minor Planets in your telescope field of view as a "by product" of your observational programs. ... We think such estimations ought to be produced every morning after CCD observations of the moving celestial objects by observer himself. ...

The problem of solar wind data correlation for the observations onboard several spacecraft is very important for three points of view: . ... This problem is studied now in detail by systematic determination of ion flux and ion velocity data correlations by INTERBALL-1 (IKI group), WIND and IMP 8 (both - MIT group). ... Solar wind plasma correlation lengths from IMP 8, WIND and INTERBALL-1. ... Correlation of solar wind observations onboard several spacecraft: INTERBALL-1, IMP 8 and WIND data. ...

... They are concerned with Attitude Control System of the spacecraft, satellite visibility from tracking stations, limits on the satellite autonomous operations during the orbit, and needs for auxiliary operations with the spacecraft. ... Among the operational constraints the most important one is the number of programmed slews per orbit, which determines the maximum number of radio sources to be observed during one orbit. ... System temperature (K) . ... Progress of the RadioAstron Project in Pictures...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Three sixth-form students from St Patrick's Grammar School, Armagh , used the Faulkes Telescope South in Australia in April to observe and measure HW Virginis , an unusual "binary" or double star system suspected to host one or two extrasolar planets orbiting the central stellar pair. ... Armagh Observatory and associated researchers hope to develop this work to look for further evidence of planet-hosting binary star...

... Up: Proposal Processing . ... ESO is prototyping a distributed ``Phase II'' system that will allow astronomers to prepare their observations at their home institutions, while maintaining a central repository for all observation data. ... ESO is developing a Phase II Proposal Preparation system (P2PP) to collect detailed scientific programme descriptions, in the form of observation blocks (OB). ... ESO's Phase II Proposal Preparation system is an integral part of the VLT Data Flow System (DFS). ...

. Statistics of sunspot activity . The sunspot indices . My observations . NGDC's observations . The solar regions . Links . About authors . Russian pages . About authors . Observer: Alexey Ryback . Web-design: Alexander Burkov .