Path: aplcen!uakari.primate.wisc.edu!zaphod.mps.ohio-state.edu!usc!apple!agate!ucbvax!SPACVAX.RICE.EDU!REIFF From: REIFF@SPACVAX.RICE.EDU (Pat Reiff (713)527-8750-2650) Newsgroups: sci.space Subject: Update on CRRES releases Message-ID: <910116232514.b15@SPACVAX.RICE.EDU> Date: 17 Jan 91 05:25:14 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 179 In response to queries on the net, here's the results from the last successful CRRES release (and the time of the next window, at 11:05 CST on 1/17). Following the first message, will be a repeat of the science objectives and a complete list of the release windows. Note that many of the windows remaining on the list will not be used because of the success of the releases so far. I'll try to find out the subset which is really remaining and post it. Does anyone have a copy of MACSAT to get altitudes and azimuths from satellite elements? If so, I can post the elements as well......Pat CRRES BOMBS THE PLASMAPAUSE!!!!! The G-4 release was performed January 16, 1991 at 06:25:00. The location of the release was right on the plasmapause boundary, as determined by simultaneous measurements with the Iowa plasma wave instrument. Howard Singer reported an initial compression of 10 gammas, followed by a diamagnetic reduction from an ambient value of 250 gammas down to 110 gammas. This reduction lasted for about 40 seconds. The CRRES on-board photometer saw the sun glint from the canister and in comparison with the particle data, the direction of the canister relative to the spacecraft was determined to be perpendicular to the magnetic field direction. The optical data were all excellent. Optical data was recorded at White Sands, Los Alamos, Millstone Hill, Long Key, St. Croix, Arecibo, Cerro Tololo, and El Leoncito. The northern and southern tips of the field-aligned ion streak were tracked for 45 minutes following the release. The next opportunity will be a high altitude lithium release on January 18 with windows beginning at 0500 UTC. David L. Reasoner January 16, 1991 CRRES JANUARY HI-ALT RELEASE CAMPAIGN The CRRES Program is on schedule for a series of high-altitude chemical releases in January, 1991. The scientific objectives of these releases may be grossly characterised as 1. Formation of Diamagnetic Cavities; 2. Cold-Plasma Seeding experiments to induce artificial precipitation; 3. Magnetospheric Injection and Ion Tracing; and 4. Plasmoid Formation. The releases will be observed with an extensive network of ground and aircraft sites. Ground sites will be located at Los Alamos, White Sands, Millstone Hill (radar and optical), Rosemary Hill, FL; and Long Key, FL in the United States. Carribean sites are St. Croix, USVI; Arecibo, P.R.; and Bonaire, Netherlands Antilles. South American sites will be located at Recife, Brazil; El Leoncito, Argentina; Cerro Tololo, Chile; and Baltra Island, Galapagos Islands, Ecuador. Three research aircraft carrying optical instruments will be used. Two USAF KC-135s will operate from K.I. Sawyer AFB near Marquette, Michigan and will fly tracks in Canada to look for artificially-induced precipitation. The Argentine/CNIE B-707 will operate from Recife, Brazil and will view the releases directly, tracing the ion motions. We expect considerable public interest as the releases will be very visible. The lithium releases will, 30 seconds following ignition, be 0.5 degree is visual diameter with an intensity at 6708 Angstroms of 1 megaRayleigh, i.e. a large and as bright as the full moon (Rev 6-12). We think someone might notice. A "Hot-Line" information number has been established at 205-544-5356. The latest release information will be available in the form of a recorded message. Attached is a table of the release windows and types. CRRES RELEASE WINDOWS FOR JANUARY, 1991 REVISED 01/05/91 BASED ON ORBIT PREDICTS EPOCH 01/04/91 ALL POSSIBLE WINDOWS ARE SHOWN. TOTAL RELEASES = 7. 3 SMALL BARIUM, 1 LARGE BARIUM, 3 LITHIUM. EACH WINDOW IS EITHER A SINGLE POINT IN TIME (SINGLE LINE) OR A SPAN (PAIRED LINES). FOR EACH WINDOW THE SATELLITE POSITIONS AT THE OPENING AND CLOSING ARE LISTED. ALL LATITUDES NORTH U.O.S. ALL LONGITUDES ARE WEST RELEASE TYPES: 1 = SMALL BARIUM 1.5 KG, 2 = LARGE BARIUM 10.8 KG, 3 = LITHIUM .74 KG ALL TIMES ARE UTC (A.K.A. GREENWICH MEAN TIME). PST = UTC-8, MST=UTC-7, CST=UTC-6, EST=UTC-5. DATE TIME LAT. LONG. ALT. REL. TYPE SUCCESS NOTES (KM) JAN 11 0143 18.1 58.5 14899 1 POSTPONED JAN 13 0218 16.8 103.5 6149 1 SUCCESSFUL! G-2 (Sm Barium) JAN 13 0258 18.0 78.1 15000 (Not done because prior was done) JAN 13 0649 8.7 85.0 33559 2,3 Done at 0705 (below) JAN 13 0844 3.2 96.2 28677 JAN 13 0705 8.0 86.7 33410 ### SUCCESSFUL! G-7 (Lg Li) JAN 15 0332 17.0 123.6 6091 1 not done JAN 15 0412 17.9 97.9 14992 JAN 15 0537 14.2 91.9 26972 1 not done JAN 15 0710 10.4 99.1 32879 ##### not done JAN 15 0806 8.1 105.1 33547 2,3 * not done JAN 15 0958 2.7 116.0 28687 JAN 16 0348 7.8 41.0 33547 2,3 * G-4 successful @ JAN 16 0539 2.5 51.8 28740 0625 UT JAN 18 0028 17.3 78.7 6137 1 won't be done JAN 18 0228 13.9 47.3 26511 JAN 18 0503 7.4 61.0 33565 2,3 * NEXT CANDIDATES JAN 18 0654 2.0 71.8 28680 DATE TIME LAT. LONG. ALTITUDE REL. TYPE (WEST) (KM) JAN 20 0142 17.4 98.7 6127 1 JAN 20 0221 17.6 73.5 14828 JAN 20 0345 13.4 67.4 26788 1 JAN 20 0454 10.4 72.1 31897 2,3 * JAN 20 0807 1.5 91.6 28724 JAN 20 0850 1.2 S 94.0 24538 1 JAN 22 0459 13.1 87.1 26790 1 JAN 22 0608 9.9 91.9 31905 2,3 * JAN 22 0922 1.0 111.4 28699 JAN 23 0552 2.5 S 47.9 23740 1 JAN 24 0915 7.1 117.1 33462 2,3 * JAN 24 1034 0.5 131.1 28748 JAN 25 0813 10.6 S 61.2 12757 1 JAN 25 0843 16.6 S 38.9 5799 * NOTES (APPLIES TO G5, G6, G7, G10 WINDOWS): 1. WINDOWS ON 1/13, 1/15, 1/16, AND 1/18 OPENED AT 1 H 25 M AFTER END OF ECLIPSE AND CLOSED WHEN GEOCENTRIC ALT. < 5.5 Re. 2. WINDOW ON 1/20 OPENED BY ALT > 6 Re AND CLOSED BY ALT < 5.5 Re. 3. WINDOWS ON 1/22 AND 1/24 OPENED BY MOONSET AT CHURCHILL AND CLOSED BY ALT < 5.5 Re. 4. ##### DENOTES PRIME G-7 (TYPE 3) RELEASE POINT. *********************************************** * RELEASE INFORMATION HOT LINE 205-544-5356 * *********************************************** ------ From the First Space Science Department in the World: : _^ ^_ ____ Patricia H. Reiff : / O O \ |GO \ Department of Space Physics and Astronomy : \ V / |OWLS\ Rice University, Houston, TX 77251-1892 : / ""R"" \__/ internet: reiff@spacvax.rice.edu (128.42.10.3) \ ""U"" / SPAN: RICE::REIFF : _/|\ /|\_ GTEtelemail: [preiff/kosmos] tm44/usa : "Why does man want to go to the Moon? ... Why does Rice play Texas?" ....JFK, Rice Stadium, 1962