Pacific Space Centre


Padova Astronomical Observatory Library

Padova Astronomical Observatory

Padova: Ekar 182cm Telescope - Schedules

PADOVANI, Paolo ( Space Telescope Science Institute )

PAK, Soojong ( Seoul National University )

Palermiti Observatory ( Florida )

The Palermiti Observatory is a non-profit organization established in 1979 for conducting astronomical research and teaching astronomy to the general public and local colleges and schools.

Palermo Astronomical Observatory

PALMA, Chris ( Univ. Virginia )

Palomar Observatory ( CalTech )

Palomar Testbed Interferometer ( PTI )

PANCHUK, Vladimir

PAPADOPOULOS, Demitrios ( Aristotle Univ. Thessaloniki )

Parallel Tools Consortium ( Ptools )

The purpose of the Ptools WWW pages is to provide information about the Ptools software consortium to the community. The on-line pages include up-to-date general information about the consortium, consortium project descriptions, meeting announcements and minutes, the email reflector archive, the by-laws, and pointers to other WWW resources.

Parallel Virtual Machine ( PVM )

PVM (Parallel Virtual Machine) is a software system that enables a collection of heterogeneous computers to be used as a coherent and flexible concurrent computational resource. The individual computers may be shared- or local-memory multiprocessors, vector supercomputers, specialized graphics engines, or scalar workstations, that may be interconnected by a variety of networks, such as ethernet, FDDI, etc. PVM support software executes on each machine in a user-configurable pool, and presents a unified, general, and powerful computational environment of concurrent applications. User programs written in C or Fortran are provided access to PVM through the use of calls to PVM library routines for functions such as process initiation, message transmission and reception, and synchronization via barriers or rendezvous. Users may optionally control the execution location of specific application components. The PVM system transparently handles message routing, data conversion for incompatible architectures, and other tasks that are necessary for operation in a heterogeneous, network environment.

Paris Observatory library

Paris Observatory ( Meudon )

This is the official server at Paris Observatory. You will find information about the activities of the Observatory, on departments, on its history, etc.

Parker, Joel Wm. ( Southwest Research Institute )

PARRY, Ian ( IoA, Cambridge )

PASACHOFF, Jay M. ( Hopkins Observatory, Williams College )

PASP Abstract Service at CDS

Following an agreement with the Editors of the PASP, the CDS provides electronic access to the abstracts from the Publications of the Astronomical Society of the Pacific.

PATTEN, Brian M. ( Harvard-Smithsonian CfA )

Evolution of angular momentum and coronal/chromospheric activity in young solar-type stars. Brown dwarfs.

PATTERSON, Ricky ( U. Virginia )

PAVLOV, George ( Penn State Univ. )

PDS Data Preparation Workbook ( DPW )

WAIS index to the text chapters of NASA's Planetary Data System (PDS) Data Preparation Workbook, Version 3.0. This document describes the data preparation process for active flight projects and data restoration tasks when submitting their planetary data for cataloging and archiving through the PDS. Search words that might be helpful in browsing the text include: Assemble, Keyword, Label.

PDS Data Set Catalog

WAIS index to a collection of text files extracted from NASA's Planetary Data System (PDS) Data Set Catalog (a Sybase database). The information contained within each text file describes an individual entity from the catalog's meta-data. These entities include: Planetary Data Sets and Data Set Collections, Missions, Instrument Hosts - both Spacecraft and Earth-Based, Targets - planets, asteroids, sky, star, etc. A good starting point when searching is to use mission names, such as Voyager or Magellan, and/or target names such as Earth, Mars, Venus, Jupiter, Saturn, and Neptune.

PDS High-Level Catalog ( Templates )

WAIS index to NASA's Planetary Data System (PDS) High-Level Catalog Templates used for submitting metadata to the Planetary Data System data set catalog. Objects and keywords used in the templates are described in the Planetary Science Data Dictionary (PSDD) source. The templates included are: Coordinate, Discipline Description, Data Set Collection, Data Set Instrument Parameteter Description, Data Set Processing, Earthbase (Instrument Host), Earthbase Data Set, Earthbase Instrument, Inventory, Mission, Node, NSSDC ID, Parameter, Peer Review, Person, Processing Description, Spacecraft Data Set, Spacecraft Instrument, Software, Spacecraft, Target.

PDS Imaging Node's Planetary Image Atlas ( PDSIMG Atlas )

The Atlas is designed to be a single interface through which you can search for, display, and download full resolution data for all planetary missions. It will eventually replace individual existing browsers. Until that time, links to the individual browsers are provided from this central location. Current missions included in the Atlas are: Magellan, Clementine, Viking, Mars Pathfinder, and Galileo.

PDS labels

WAIS index to examples of actual data labels and completed catalog submission templates used by NASA's Planetary Data System (PDS) to catalog and archive planetary data. Objects and keywords used in the templates and labels are described in the Planetary Science Data Dictionary (PSDD) source.

PDS Planetary Rings Node

The Planetary Rings Node is responsible for restoring, archiving and publishing datasets describing planetary ring systems. This includes all the relevant datasets aquired from previous and future spacecraft, as well as from Earth-based observatories. In order to support research with these datasets, the node also provides expert assistance, catalog information to help scientists pinpoint the most relevant data, and a suite of software tools to simplify data manipulation.

PDS Planetary Science Data Dictionary ( PSDD )

WAIS index to the Planetary Science Data Dictionary (PSDD) - NASA Planetary Data System objects and element descriptions for describing and labeling planetary data. Catalog and data objects and elements (or keywords), their descriptions and attributes are included. Keyword class names such as date, time, latitude, longitude, ID, description, coordinate, etc., can be used as search words to identify individual data dictionary elements. Catalog and data type names such as table, column, histogram, document, etc., can be used as search words to identify data dictionary objects.

PEDERSEN, Holger ( Copenhagen )

PELETIER, Reynier ( School of Physics and Astronomy, University of Nottingham )

Personal Home Page with links to the Owner's Preprints, including Images and Tables in Electronic Form of Recent Work.

Penn State - QSO Absorption Line Group

Penn State Inservice Workshops in Astronomy ( PSIWA )

The Penn State Department of Astronomy & Astrophysics offers inservice workshops for science teachers at the middle- and high-school levels. These are held during the summer and provide graduate credit.

Pennsylvania State University - Department of Astronomy and Astrophysics ( PSU )

PENNY, Alan ( RAL )

Peoria Astronomical Society

Peoria astronomical Society is an Amateur Astronomy Society Dedicated: To promote the science of astronomy By fostering astronomical education; by providing incentives for astronomical observation and research; by assisting communication among amateur astronomers.

Perkins Observatory

Public Observatory located in Deleware, Ohio, USA. Offers public programs almost every weekend. Owned and operated by the Ohio Wesleyan University.


Radio galaxies, blazars, active galaxies, clusters of galaxies, cosmology.

Personal MicroCosms

Download Astronomy Lab and Astronomy Clock from Personal MicroCosms' web site. These programs are available in Windows 3.1 and Windows 95, 98, and NT versions.

Perugia University Astronomical Observatory

Articles, data, researches, and new developments at Perugia University Astronomical Observatory.

Peruvian Astronomy ( SPACE )

The Seminario Permanente de Astronomia y Ciencias Espaciales (SPACE) promotes astronomy in Peru. The SPACE is the major organization for astronomers and individuals interested in astronomy in Peru.

Peter Tribble's Papers

Peter Tribble has converted some of his preprints into hypertext form. In addition, permission has been obtained to make his papers published in Monthly Notices available. (Note that the published papers are copyrighted and this is something of an experiment, so that some feedback would be appreciated.)

PETERSEN, Jørgen Otzen ( Copenhagen )


PETERSON, Deane ( Stony Brook Astron. Group )

PETRE, Robert ( GSFC )

PETROV, Georgy ( Sofia )

Active Galactic Nuclei, Emission Line Galaxies, Spectrophotometry, Surface photometry and Photometry, Open clusters - U, B, V, R, I CCD photometry, Surface photometry of BOX / PEANUT galaxies, Emission nebulae.

PETROVAY, Kristóf ( Eotvos University, Hungary, and IAC, Tenerife )

Asymmetry of magnetic flux loops in the solar convective zone; Space-time distribution of sunspot groups; Study of the morphological properties and anisotropy of convection; Theory of passive magnetic field transport and application to the solar convective zone and photosphere; Turbulent magnetic fields; Turbulent erosion of magnetic flux tubes; Sunspot decay; Interstellar turbulence.



pgperl is a version of the Perl 4.0 language which has been combined with the PGPLOT FORTRAN library, a very popular package for plotting astronomical data. (As a glance through any issue of ApJ or MNRAS will confirm.) The details of this involve some complicated C glue routines but are transparent to the user. perl is a real C-like language with full control structures, and is very fast and efficient. All the power of perl (and believe me that is a lot) is available to extract data to plot from multitudes of files in complicated free formats.

PGPLOT Graphics Subroutine Library

The PGPLOT Graphics Subroutine Library is a Fortran-callable, device-independent graphics package for making simple scientific graphs. It is intended for making graphical images of publication quality with minimum effort on the part of the user. For most applications, the program can be device-independent, and the output can be directed to the appropriate device at run time.

PGPLOT module for Perl

The pgperl module allows the use of the the PGPLOT graphics library from the popular Perl scripting language. PGPLOT makes it very easy to process and plot data using the powerful file and text manipulation facilites built in to Perl.

PHARAO Project

A project to investigate a Space Frequency Standard using Cold Atoms.

Phase-diverse speckle reconstruction of solar data ( PDS )

Award-winning paper: " Phase-diverse speckle reconstruction of solar data," by John H. Seldin and Richard G. Paxman, Environmental Research Institute of Michigan. --ABSTRACT-- Phase-diverse speckle imaging is a novel imaging modality that makes use of both speckle-imaging and phase-diversity concepts. A phase-diverse speckle data set consists of one conventional image and at least one additional image with known phase diversity for each of multiple atmospheric phase realizations. We demonstrate the use of a phase-diverse speckle data set collected at the Swedish Vacuum Solar Telescope on La Palma to overcome the effects of atmospheric turbulence and to restore a fine-resolution image of solar granulation. We present preliminary results of simultaneously reconstructing an object and a sequence of atmospheric phase aberrations from these data using a maximum-likelihood parameter-estimation framework. The consistency of the reconstructions is demonstrated using subsets of the sequence of images pairs.

PHILIP, A. G. Davis ( Union College )

Phillip Mauskopf ( UMASS )

PHINNEY, E. Sterl ( CalTech )

Physical Research Laboratory - Astronomy and Astrophysics Division ( PRL, India )

Members of the Astronomy & Astrophysics Division of Physical Research Laboratory are engaged in research work on the Sun, stars and galaxies. Observational facilities include a 1.2m Infrared Telescope at Mt. Abu, India and a Solar Observatory at Udaipur, India. The research work includes (i) studies of the solar corona, (ii) radio astronomy, (iii) kinematic studies of gaseous nebulae, (iv) near-IR studies of novae, eclipsing binaries, symbiotic stars, Wolf-Rayet stars, (v) lunar occultation studies in the near-IR, (vi) AGNs, BL Lacs, dust lanes in galaxies, optical morphologies of radio and Markarian galaxies.
Observing instruments are based on 1k x 1k CCD, near-IR InSb and NICMOS3 detectors, Fabry Perot spectrometers, polarimeter etc.

Physical Review Letters

Published by the American Physical Society. (APS).

Physics - Astronomy - Mathematics Division of the Special Libraries Association ( PAM )

Physics Job Announcements

Physics Job Announcements by thread

Physics Jobs On-Line ( The Internet Pilot to Physics )

Physics Jobs Online ( PhysJobs )

A service of the European Physical Society (EPS).

Physics Jobs ( IoP )

Physics Today

Physics Today, the "trade journal" for physicists, is sent to all members of the societies that make up the AIP (American Institute of Physics).


Collection of pointers to courses, multimedia documents, lesson plans, software, organizations, and other resources useful in the teaching/learning of Physics.

PhysicsWeb ( The web site for physicists )

PhysicsWeb provides weekly news, patent news, webwatch, book reviews, jobs, events calendar, Physics World magazine and an extensive collection of physics related resources.

PhysNet: The Physics Departments & Documents Network

PhysNet is a service of the European Physical Society (EPS).

PICKETT, Brian K. Pickett ( NASA/ARC )

Pierre Auger Project

The Auger Observatory is designed to detect and study cosmic rays around and above the GZK cutoff, i.e. at energies exceeding 1019 eV, with an unprecented quality and precision. Within our present knowledge, there is no standard explanation to the production and acceleration of any particle in the universe at such macroscopic energies. The Auger project is therefore the only answer the scientific community can propose to solve an astrophysical puzzle of more than 30 years.

Pijpers, Frank P. ( Aarhus ) The following resources are similar (same sort-key, different text):

PIJPERS, Frank P. ( Uppsala )

Pine Mountain Observatory ( University of Oregon )

Pioneer Project ( NASA/Ames )

Pioneer 10 and 11 mission descriptions.

PIOTTO, Giampaolo

PIRAN, Tsvi ( Hebrew )

PIRENNE, Benoit ( ST-ECF )

Pisa University - Astronomy and Astrophysics Section

Pisgah Astronomical Research Institute ( PARI )

The Pisgah Astronomical Research Institute is a not-for-profit public foundation dedicated to providing research and educational access to radio and optical astronomy for a broad cross-section of users.
Pre-college through post-graduate students will have the opportunity to work and learn with full time and visiting astronomers. Additional access is provided on a remote basis through this Internet site to grades K-12. The following resources are similar (same sort-key, different text):

Pisgah Astronomical Research Institute ( PARI )

The Pisgah Astronomical Research Institute is a not-for-profit foundation dedicated to providing research, study, and educational access to optical and radio astronomy for a broad cross section of users. Pre-college through post-graduate students will have the opportunity to work and learn with full time and visiting astronomers and astrophysicists while performing real research using a variety of advanced astronomical techniques. Additional access will be provided on a remote basis through the Internet to grades K-12 and the public.
Located in the Appalachian Mountains near the Blue Ridge Parkway just west of Asheville, North Carolina, PARI will provide both the sky views appropriate to the science of astronomy, as well as a pleasant place to work and learn.

Pittsburgh Supercomputing Center ( PSC )

Pixel Observation on Isaac Newton Telescope - Andromeda Galaxy and Amplified Pixels Experiment ( POINT-AGAPE Collaboration )

The POINT-AGAPE collaboration looks for microlensing events due to MACHOs towards the M31 galaxy. POINT stand for "Pixel Observation on Isaac Newton Telescope" and AGAPE for "Andromeda Galaxy and Amplified Pixels Experiment".


Planck is the third Medium-Sized Mission (M3) of ESA's Horizon 2000 Scientific Programme. It is designed to image the anisotropies of the Cosmic Background Radiation Field over the whole sky, with unprecedented sensitivity and angular resolution. Planck will provide a major source of information relevant to several cosmological and astrophysical issues, such as testing theories of the early universe and the origin of cosmic structure.
Planck was formerly called COBRAS/SAMBA. After the mission was selected and approved, it was renamed in honor of the German scientist Max Planck (1858-1947), Nobel Prize for Physics in 1918.

Planetary Atmospheres Node ( NASA/PDS )

Planetary Data System Imaging Node ( PDSIMG )

The Imaging Node of the Planetary Data System is the curator of NASA's primary digital image collections from past, present, and future planetary missions. The node provides to the NASA planetary science community the digital image archives, necessary ancillary datasets, software tools, and technical expertise necessary to fully utilize the vast collection of digital planetary imagery.

Planetary Nebulae Observer's Home Page

The web site for almost everything related to observations of Planetary Nebulae. Hundreds of images and over 1000 observing reports in addition to many special articles. Links to other PN related sites and databases.

Planetary researches in Kazakhstan ( Planlab )

The studies of planets and other solar system bodies are described on a base of the researches in Laboratory of Lunar and Planetary Physics of Fessenkov Astrophysical Institute (Alma-Ata, Kazakhstan).

Planetary Science Institute ( PSI )

The Planetary Science Institute (PSI) is a non-profit organization ( a division of San Juan Institute) that conducts a wide variety of basic research in planetary science and allied fields. Established in Tucson, Arizona, in 1972, the Institute has a number of multi-faceted research programs in planetary astronomy, lunar and planetary geology, and planetary geophysics and dynamics. PSI's Astrophysics Group conducts research on cataclysmic variables, CCD observational techniques and instrumentation, multi-wavelength observations, faint object photometry, and extra-Solar planet searches. PSI currently emphasizes Mars, satellites, asteroids , and comets, as well as the origin of planets. Our scientists have participated in NASA spacecraft missions, such as Mariner 9, Viking, and Mars Observer, and are presently involved in the Galileo Mission to Jupiter and the NEAR Mission to Eros.

Planetary Society

In 1980, Carl Sagan and Bruce Murray founded The Planetary Society to promote the exploration of our solar system (and others) and the search for extraterrestrial life. In its first year, the Society became the fastest growing nonprofit membership organization of the decade. We now number over 100,000 members around the world--the largest nongovernmental space organization on Earth.

Planetary Surfaces ( PlaNet )

An online lab used in the lab section of the Astronomy 101 course at the University of British Columbia


Views of the Solar System presents a vivid multimedia adventure unfolding the splendor of the Sun, planets, moons, comets, asteroids, and more. Discover the latest scientific information, or study the history of space exploration, rocketry, early astronauts, space missions, spacecraft through a vast archive of photographs, scientific facts, text, graphics and videos.

PLAVEK, Mirek J. ( UCLA )

PLEWA, Tomasz ( Warsaw )


The GNU plotutils package contains software for both programmers and technical users. Its centerpiece is libplot, a powerful C/C++ function library for exporting 2-D vector graphics in many file formats, both vector and raster. It can also do vector graphics animations.

Plymouth Astronomical Society ( PAS, UK )

POGGE, Richard W. ( Ohio State Univ. )

POJMANSKI, Grzegorz ( Warsaw University Obs. )

Polaris Observatory Association ( POA )

Polaris Observatory Association is a scientific not-for-profit organization with a private observatory in Lockwood Valley, California.

Polyclystic Pilot Survey of Intracluster Light ( PoPSIcL Project )

We propose to search for and quantify the properties of the intracluster light (ICL) in galaxy clusters as a function of cluster environment.

Pomona College - Astronomy Program

Includes a complete description of the Pomona College astronomy program, a tour of the Frank Brackett Observatory, and a tour of the 40" telescope in the nearby San Gabriel Mountains.

Pontificia Universidad Catolica de Chile - Astronomy and Astrophysics Department ( PUC Chile )

Departamento de Astronomía y Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile.

POPOV, Sergei ( Sternberg Astronomical Institute )

Scientific interests: astrophysics of neutron stars, accretion, close binaries, star formation, astronomy education.

Porto University - Astrophysics Center

This is the Home Page of The Astrophysics Research Center at the University of Porto, providing general information on people and their research.

Post-Doctoral Positions at the Instituto de Astrofsica de Canarias ( IAC )

Postage Stamp Server for NVSS Radio Sky Survey ( NVSS Postage Stamp Server )

This Web page allows the user to obtain "postage stamp" FITS images of selected, small fields from the NRAO/VLA Sky Survey (NVSS). Either 1950 or 2000 positions are supported as are a number of projective geometries. This survey is being done with the National Radio Astronomy Observatory's Very Large Array telescope at a wavelength of 20 cm (1.4 GHz) and is producing images of the sky north of declination -40 deg with a resolution of 45". Both total intensity and linear polarization is being imaged. This project began in September 1993 and the main body of observations will be finished in the Summer of 1996. Results are being made available as they are produced.

Potchefstroom University - Physics Department: Space Research Unit

Poznan Observatory ( A. Mickiewicz University )

Information on the staff and research activities.

Practical Guide to Astronomy

PRADHAN, Anil K. ( Ohio State Univ. )

Prairie Astronomy Club of Lincoln, Nebraska ( PAC )

The Prairie Astronomy Club is a non-profit organization dedicated to education of the public about the science of astronomy, as well a furthering the science through the activities of the club members.

PREDMORE, C. Read ( UMass )

PREIBISCH, Thomas ( MPIfR, Bonn )

Prince George Astronomical Society ( Canada )

The Prince George Astronomical Society is a non-profit organization dedicated to the advancement of astronomy and science in Prince George and the neighboring Northern Canadian communities.

PRINCE, Tom ( CalTech )

Princeton Observatory: Preprints

Princeton University - Astrophysics Library

Princeton University - Pulsar Group

The home page of the pulsar research group in the department of physics of Princeton University, this site includes pointers to the home pages of group members, a collection of pulsar related resources and pointers to our supported data analysis software (including TEMPO), and links to radio astronomy observatories and related sites.

Princeton University Astrophysics Graduate Program

Princeton University Observatory

Probing Lensing Anomalies NETwork ( PLANET )

The PLANET collaboration is a worldwide network of astronomers with access to Dutch, South African, and Australian telescopes. The primary goal of PLANET is the study of microlensing anomalies (departures from an achromatic point-source, point-lens light curve) through multi-band, rapidly-sampled photometry. An ultimate goal is to place constraints on the number and distribution of planets around other stars.

PROCHASKA, Jason X. ( Carnegie Observatories )

Damped Lyman Alpha systems.

Project Galileo: Bringing Jupiter to Earth

Launched in 1989, the Galileo spacecraft arrived at Jupiter on December 7, 1995, when it fired its main engine for a successful orbit capture around Jupiter. On that day, Galileo's atmospheric probe plunged into Jupiter's atmosphere and relayed information on the structure and composition of the solar system's largest planet. The spacecraft's orbiter will spend the next two years orbiting the giant planet, studying Jupiter and its moons (encountering one moon during each orbit), and returning a steady stream of images and scientific data. The first two encounters were successfully performed with Jupiter's largest moon, Ganymede, on June 27, 1996 and September 6, 1996.

There is a mirror site at: http://galileo.ivv.nasa.gov/


PROS Software

PRUGNIEL, Philippe ( CRAL Lyon )


PSPLOT is a Fortran-callable PostScript plotting library which can create 2-D publication-quality graphics. It supports the standard 35 PostScript fonts and color, and is distributed free of charge for non- commercial use.

PTAK, Andrew ( GSFC/UMCP )

Publications of the Astronomical Society of Australia

The Publications of the Astronomical Society of Australia (PASA) is a refereed international journal for new and significant research in all areas of astronomy and astrophysics, including instrumentation and software development.

Publications of the Astronomical Society of Japan ( PASJ )

PASJ publishes research papers on all aspects of astronomy, astrophysics, and fields closely related to them. From its foundation in 1949 till 1985, PASJ was published quarterly. From 1986, PASJ has been published bimonthly.

Publications of the Astronomical Society of the Pacific - Electronic Edition ( PASP )

Published by the University of Chicago Press for the Astronomical Society of the Pacific.

Publications of the Astronomical Society of the Pacific - Instructions for Electronic Manuscript Submission

Publications of the Astronomical Society ofthe Pacific ( PASP )

PASP is the technical journal of the Astronomical Society of the Pacific produced monthly by The University of Chicago Press.

Puckett Observatory

PUDRITZ, Ralph E. ( McMaster University )

PUETTER, Richard C. ( UCSD / CASS )

Infrared astronomy, instrumentation, active galaxies/QSOs, radiative transfer, computational physics, image reconstruction.

Pulkovo Central Astronomical Observatory

Purdue University High Energy Astrophysics ( HEAp )

Pushchino Radioastronomy Observatory (PRAO) ( PRAO )

Pushchino Radioastronomy Observatory of Astro Space Center of P.N.Lebedev Physical Institute (PRAO ASC LPI).

PYCH, Wojtek ( Warsaw University Obs. )