USEFUL LINKS  Gettysburg College Observatory TIME UTC (UNIVERSAL) TIME: Atomic Time from the Naval Observatory Local Apparent Sidereal Time:  From USNO. Julian Day Converter: From USNO. About Time: A "careware" time synchronizer that runs under Windows. Time Setting Software:  A list of links for all types of computers. Precision Timing Information: Links and Software from Sweden Leapsecond Online Clocks: Local, UTC, GPS,  Loran, TAI, and MJD on display! Nice Site WEATHER Weather: Gettysburg area NOAA report. Clear Sky Clock: See the sky in Harrisburg; other cities too. Weather Images Wonderful compilation of satellite and webcam links.. Weather Underground: For Lancaster; nice site. Weather for Outdoors Activities: A site geared for observers.  NOAA Weather front Center ACCUWEATHER for Gettysburg PA University of Wisconsin Geo 8 Satellite picture of low clouds updated every 15 min. University of Wisconsin Geo 8 Satellite ir picture , updated at 29 and 59 min. University of Michigan list of weather sites. CHARTS, CATALOGS, and REFERENCE DATABASES Digitized Sky Survey: STScI server. SIMBAD: Object database mirror at Harvard Heavens Above: For Harrisburg---general sky information for date and time. Nightly Sky Maps: A nice British site. Solar System Plotter and Planetary Positions (RA & DEC) a continuously updated plot and tables from Texas A&M Deep Sky Database: Lots of galaxy information, and on-line version of the Saguara Database. The NASA Astrophysics Data System : Full Articles on line Phases of the Moon: From the Naval Obsevatory Satellite Tracking: Find out where they are! VARIABLE STARS Cool Algol Binaries: Observations in collaboration with G. Torres and J. Mader, Center for Astrophysics.  Landolt Standards: UVBRI Standards on linewith finding charts. SUPERNOVAS Recent Supernovas: Maintained at the Central Bureau for Astronomical Telegrams, Cambridge, MA The Latest Supernovas: Dave Bishop, nice site with lots of observing info.  List of all supernovas :   Maintained at the Central Bureau for Astronomical Telegrams, Cambridge, MA Supernova Site: Of Jean-Claude Pelle; lots of current information. ASTEROID DATA AND REFERENCES Lowell Heirarchical Observing Planner :    Gives help in deciding the best night's targets for your location.  Minor Planet Mailing List: And a list of linked sites of interest.  Asteroid Observing Strategy Planner: Helps you pick out best candidates. From Lowell Obs Asteroid Follow-up Sites: Find out what newly discovered asteroids need observing. IAU Minor Planet Center : All sorts of useful information, including elements and ephemerides. IAU Report Statistics: See how 842 and others stack up in number of asteroids measured. How To Observe Asteroids:   An informative guide from the MPC Asteroid Checker for Supernova Searches: Minor Planet Center. Lowell Critical Lists: Objects that need observing! Unidentified LONEOS observations: Other objects that need observing. Lowell Asteroid Services: Ephemerides, charts, orbital element lists, etc. Lowell Observatory Asteroid Database: The latest elements. Lowell Observatory Asteroid Selector: Pick out asteroid based on various parameters. Asteroid Plots :  Which asteroids can your observatory image in a given area of sky? Minor Planet Observer Newsletter: lots of useful info and links. Near Earth Object Database: NEODyS From Italy.   What's going to hit us next? Other IAU Minor Planet Observatories:  A page of direct links. Orbit Visualization: Animated model of the Solar system with selected asteroid!  Very nice. ASTEROID PHOTOMETRY Collaborative Asteroid Lightcurve Link ---At the MPC; lists and information on photometry. CCD  PHOTOMETRY CCD Observing Manual from the AAVSO ---Useful basic information on CCD astronomy from the American Association of Variable Star Observers. AAVSO Observing Campaigns: -- Collaborative projects for observation. "Blank Sky" fields for Sky Flats---a list from La Palma DATA REDUCTION AND PROGRAMS IRAF The Mother Site at KPNO, with source files. IRAF/STARLINK UK Site, with additional information. IRAF_NET A treasury of useful routines, tips, and hints,as well as source software and souvenirs. EXTRASOLAR PLANETS Transitsearch.org ---Candidate lists and ephemerides for transits of recently discovered extrasolar planets that may show transits. WHAT'S UP? What's Up: Current Star charts and lists. MISCELLANEOUS CCD Imaging calculator: Figure parameters of your telescope/camera.  The Astro Calculator: If you watch your units, this page makes it easy to do numerical problems in physics, astronomy and astrophysics. NURO (Flagstaff) INFORMATION NURO : Tne National Undergraduate Research Observatory Lowell Observatory: The Home Page at Flagstaff.  Flagstaff Webcam: Check out the Weather Flagstaff National Weather Service : For the whole area including the Grand Canyon MANUFACTURERS AND TECHNICAL INFORMATION Astronomical Consultants and Equipment (ACE) who made our telescope drive system Santa Barbara Instrument Group (SBIG) manufacturers of CCD Cameras GKR Computer Consulting: Makers of PMIS, the software used in our Photometrics camera. Apogee Instruments: Manufacturers of CCD Cameras. Photometrics (Roper Scientific) : Manufacturers of CCD Cameras.   Click here to return to Observatory Home Page     copyright Laurence A. Marschal l, Gettysburg College