MISSION CONTROL CENTER STS-67 STATUS REPORT #26 Wednesday, March 15, 1995, 8 a.m. CST Endeavour's astronomical observatory continues its around-the-clock operations as the orbiter nears the end of its eighth voyage in space. Mission Specialist Tammy Jernigan, a native of Chattanooga, talked with a Tennessee radio station along with crew mate Wendy Lawrence. The discussion centered around the astronomical observations being conducted throughout the mission as well as homeowner- type questions posed to Jernigan, making her third flight aboard the Shuttle. Along with Sam Durrance, the three astronauts have been choreographing orbiter maneuvers with instrument pointing to precisely aim the ASTRO observator at the desired celestial targets throughout the universe. The remaining four crew members -- Steve Oswald, Bill Gregory, John Grunsfeld and Ron Parise -- will wake up just after 10 a.m. central time today and will take over control of Endeavour and its payloads about noon. Before Lawrence turns in, she will join Oswald and Gregory in the routine, pre-entry checkout of Endeavour's flight control system, which includes verifying the health of the moveable surfaces on the wings and tail used during the atmospheric reentry portion of landing. One of the Endeavour's three hydraulic systems is required during portions of the checkout scheduled to begin about 12:30 this afternoon. Endeavour's mission continues to progress trouble-free as the vehicle circles the earth every 91 minutes at an average altitude of 185 nautical miles. The JSC Newsroom is open from 8 a.m.-5 p.m. weekdays, and from 9 a.m.-1 p.m. weekends throughout the mission. NASA's MSFC Newsroom is open from 6 a.m.-6 p.m. weekdays, and from 6 a.m.-2 p.m. weekends. MSFC's Code-A-Phone is updated twice daily and can be reached by calling 205-544-6397.