NASA Logo, National Aeronautics and Space Administration
NASA Space Science Data Coordinated Archive Header

Astro 2



Following the scientific success of the Astro-1 mission, Astro-2 was approved as a follow-up flight. The three ultraviolet telescopes, which flew on Astro-1, were reassembled for Astro-2. These telescopes were (1) the Ultraviolet Imaging Telescope (UIT) operating in the 1200-3100 Angstrom range, (2) the Hopkins Ultraviolet Telescope (HUT) operating from 425 to 1850 Angstroms, and (3) the Wisconsin Ultraviolet Photopolarimetry Experiment (WUPPE) operating from 1250 to 3200 Angtroms. HUT was significantly upgraded for this second flight, with new optical coatings, which enhanced the telescope's performance by more than a factor of two. The three telescopes were planned to make simultaneous observations of objects such as stars, galaxies and quasars, since many science objectives and selected astronomical targets of the three instrument teams are interrelated. BBXRT, which was onboard ASTRO 1, was not flown on ASTRO 2.

The telescopes were mounted on a Spacelab pallet in the payload bay of the shuttle (flight STS-67). The Spacelab Instrument Pointing System (IPS), pallets, and avionics were utilized for attachment to the Shuttle and for control and data handling. The IPS provides a stable platform, keeps the telescopes aligned, and provides various pointing and tracking capabilities to the telescopes. The Astro observatory requires both mission specialists and payload specialists to control its operations from the Shuttle aft flight deck. Instrument monitoring and quick-look data analysis are planned for real-time ground operations.

The Guest Observer Program was included for Astro-2. The telescopes observed over 250 astronomical objects before returning to earth after a 16-day flight.

Alternate Names

    Facts in Brief

    Launch Date: 1995-03-02
    Launch Vehicle: Shuttle
    Launch Site: Cape Canaveral, United States

    Funding Agency

    • NASA-Office of Space Science (United States)


    • Planetary Science
    • Astronomy

    Additional Information

    Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office



    NameRoleOriginal AffiliationE-mail
    Mr. William HuddlestonProgram ManagerNASA Headquarters
    Dr. Jack A. JonesMission ManagerNASA Marshall Space Flight Center
    Dr. Charles A. MeeganMission ScientistNASA Marshall Space Flight
    Dr. Leon B. AllenProject ManagerNASA Marshall Space Flight Center
    Dr. Edward J. WeilerProgram ScientistNASA
    Dr. Theodore R. GullMission ScientistNASA Goddard Space Flight

    Related Information/Data at NSSDCA

    STS 67 (Astro 2 mission)
    Astro 1

    US Active Archive for Astro 2 Information/Data

    The Astro Archive at MAST (STScI)

    Other Sources of Astro 2 Information/Data

    Hopkins Ultraviolet Telescope (HUT) team page
    Ultraviolet Imaging Telescope (UIT) team page
    Wisconsin Ultraviolet Photopolarimeter Experiment (WUPPE) team page

    [] NASA Logo -