A number of different choices are possible on WFPC2 in order to approximate the Johnson-Cousins system often used in ground based observing. These choices differ in throughput, wavelength fidelity, color transformability, and cosmetics. The HST science program as a whole benefits if a standard set can be agreed upon by the community for broad band photometry. ... These filters form the basis for the WFPC2 broad band photometric system. ... Space Telescope Science Institute . ...

... Should be broken out by telescope within a facility.) ... Should be broken out by telescope within a facility.) - # programs allocated time ­ number of programs with non- staff PI's ­ number of programs with observatory staff as PI's ­ number of thesis programs ­ number with U.S. PI's ­ number with foreign PI's ­ information on geographic distribution - # states, # institutions, characterization of institution (R1, PUI, etc), if information ...

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 . ...

Next: Storage format Up: File Formats Required Previous: Column label: MOONALT . Information specific to a particular instrument is not so easy to categorize. ... Columns BAND and NBAND . Column FILTCODE_ n . Column NDVALUE . Column NDETUSED . Columns REDLEAK, RLTYPE, and MAKER . Instrument descriptors . ... Character descriptor FILTCAT . Character descriptor FILTSTAT . ... Columns NDET and DETNAME . Column DETCODE . Column DET . ... A simple photometer . ...

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 . ...

NICS (Near Infrared Camera Spectrometer) is the camera/spectrometer that the Infrared Group at Arcetri Observatory is designing and building for the National Telescope Galileo ( TNG, Telescopio Nazionale Galileo ), on behalf of the Italian astronomical community. ... This document is not aimed at providing a detailed description of the various parts of the instrument, the reader will be addressed to specific papers and reports for technical details. ...

TUI supports the following offsets: . Object Arc offset by a given amount on the sky (i.e. along the arc of a great circle). ... Arc offsets are useful for moving a different portion of your object or a different nearby object onto the boresight . ... Object Arc XY this is identical to an Object offset except that it has been rotated to align along the instrument x-y axes. ... This is just like the Calibration XY offset, except that it is typically cleared when you slew to a new object. ...

Next: The Multimission Archive at the Space Telescope Science Institute . Up: Archiving . ... As part of the agreement between NASA and ESA on the continuation of the collaboration on HST, the ST-ECF has been charged with the production of the Post Operational HST Science Instrument Archives (POA). Starting with the Faint Object Spectrograph the data from the instruments which have been removed from the HST will be re-calibrated and made accessible in a uniform manner. ... Rosa 2 . ...

European Southern Observatory Conditions Governing CFPs and Contracts for VLT Instrumentation POLICY FOR GUARANTEED TIME OBSERVATIONS (GTO) (Ref. ... At least two months prior to the issue of a Call for Proposals the GTO PI will submit to ESO the complete GTO plan and will indicate specifically which part is proposed for the semester which is the subject of the Call. ... In their proposal, the GTO Teams will provide the specific list of targets, or the field coordinates and size to be explored. ...

LOFAR in Australia ­ A Brief Engineering Perspective By Dr Peter J Hall, CSIRO SKA Program Leader 11 October, 2002 Background LOFAR (LOw Frequency ARray) is a proposed radio telescope designed to operate in the approximate frequency range 30 - 200 MHz. ... In both cases, the instruments would be built and operated by intern ational consortia; Australia is a founder member of the 11 -member SKA consortium and may join the USA and Europe in the LOFAR endeavour. ...

... Calibration information standardisation 2. Pre-launch calibration gold-standard 3. ... Role of ICWG STANDARDISATION IN GROUND CALIBRATION: tracking (configuration and quality) ------------------------------------- There was some discussion of the mechanisms for imposing or enforcing requirements on instrument development in the different (inter)national contexts relevant to the development of our missions. ... This includes standardisation of ground calibration data formats. ...

SITE 2010 Comprehensive Characterization of Astronomical Sites Kislovodsk, Russia, 49 October 2010 Conference Summary Marc S. Sarazin*a a European Southern Observatory, Garching, Germany Abstract The main topics discussed during the Site 2010 conference are outlined and the outcome is described. Keywords: Astronomical Site testing, precipitable water vapor, atmospheric turbulence, cloudiness, seeing 1. ... Site surveys for National observatory projects in China, India, and Iran benefit from this. ...

Hide Zen home . ... Index . ... Do we really need them for database indexing ? ... We need simple numbering scheme, so that for any given point we could easily calculate the number of "pixel", this is what HealPix provides and lacks HTM. ... During Rtree queries the number of index blocks read is several times greater than during Q3C queries. ... But in Q3C scheme, as we showed before, the circle is segmented, so we extract from the database only a few percents more data than occur in the circle. ...

Simulations for ALMA Robert Laing European Instrument Scientist Simulations for ALMA IRAM, Sept 8 -10 2008 Why do we need simulations? ... Find out what simulations have been done for ALMA? ... Polarization Single-dish and array combination issues Deconvolution ALMA 3 Robert Laing European Instrument Scientist Simulations for ALMA What might we achieve at this meeting (2)? ... Sort out the remaining pad location issues Robert Laing European Instrument Scientist ALMA 4 Simulations for ALMA ...

. Accurate flux calibration is required to derive to many intrinsic properties of the galaxy like star formation rate. It is also required to compare the data from different instruments. In this FoF I will summarise some of the issues (and hopefully their solutions) encountered while flux calibrating data from DEIMOS spectrograph on KECK.

Pixels , slits and facets for the NGST NIRSpec: Appendix ST-ECF Instrument Science Report NGST 2002-01a Pixels , slits and facets for a MEMS-type spectrograph for NGST Appendix : Extension to different PSF and detector properties Santiago Arribas, Peter Jakobsen, Robert Fosbury Wolfram Freudling --1-- ST-ECF Instrument Science Report NGST 2002-01a Pixels , slits , and ... This PSF meets the two requirements established by Bely et al. for the OTA optical quality. ...

The polar oval complete and partially visibility for the optical instruments on board of the AURORAL PROBE are shown by different symbols . The polar diagram of the Spacecraft positions magnetic mapping during polar oval visibility for the UVAI and UVSIPS cameras. The polar diagram shows the Spacecraft corrected geomagnetic co-ordinates : co-latitude - local time . ... The real time visibility (Moscow time MT=UT+3h). Date is shown along the X-axis, the MT - along the Y-axis. ...

... On the coude focus of 1-m (Zeiss-1000) telescope have installed two echelle spectrometers: CEGS and HELEN. Both spectrometers have been designed by Musaev F.A. and oriented for spectroscopy of relatively bright stars with different spectral resolution. ... spectral resolution R~40000, range 3200 - 10100 Angstroms - registered simultaneously with 1242x1152 CCD (see example of CCD image of Solar spectrum, obtained with 1252x1152 CCD - about 100 spectral orders are seen (151Kb jpeg file ). ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... Meade Instruments Corp. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The low-resolution, Cassegrain mounted, FORS spectropolarimeter of the ESO Very Large Telescope is being extensively used for magnetic field surveys. Some of the new discoveries suggest that relatively strong magnetic fields may play an important role in numerous physical phenomena observed in the atmospheres as well as in the circumstellar environments of certain kinds of stars. ...