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附錄：SETI - List of Searches |
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附註：
NOTES:
OBSERVER(S): DRAKE "OZMA" SITE: NRAO INSTR. SIZE (M): 26 SEARCH FREQ.(MHz): 1420-1420.4 FREQUENCY RESOL.(Hz): 100 OBJECTS: 2 STARS FLUX LIMITS (W/m**2): 4x10**-22 ** TOTAL HOURS: 150 REFERENCE: 1 COMMENTS: Single channel receiver.
OBSERVER(S): KARDASHEV & SHOLOMITSKII SITE: CRIMEA DEEP SPACE STATION INSTR. SIZE (M): 16 (8 ANTENNAS) SEARCH FREQ.(MHz): 923 FREQUENCY RESOL.(Hz): 10 MHz OBJECTS: 2 QUASARS FLUX LIMITS (W/m**2): 2x10**-20 TOTAL HOURS: 80 REFERENCE: 20, 44 COMMENTS: Reported detection of CTA102 as possible Type III civilization.
OBSERVER(S): KELLERMAN SITE: CSIRO INSTR. SIZE (M): 64 SEARCH FREQ.(MHz): MANY BETWEEN 350 & 5000 FREQUENCY RESOL.(Hz): FULL BANDWIDTH FOR EACH FEED OBJECTS: 1 GALAXY (1934-63) FLUX LIMITS (W/m**2): 10**-18 TOTAL HOURS: REFERENCE: 2 COMMENTS: No "notch" of ETI origin was detected in galaxy 1934-63.
OBSERVER(S): TROITSKII,GERSHTEJIN,STARODUBTSEV & RAKHLIN SITE: ZIMENKIE, USSR INSTR. SIZE (M): 5 SEARCH FREQ. (MHz): 926-928 & 1421-1423 FREQUENCY RESOL. (Hz): 13 OBJECTS: 11 STARS + M31 FLUX LIMITS (W/m**2): 2x10**-21** TOTAL HOURS: 12 REFERENCE: 3 COMMENTS: 20 filters of width 100 KHz divided into 25 channels with F = 13 Hz spaced 4 KHz apart and stepped in frequency.
OBSERVER(S): TROITSKII SITE: GORKY INSTR. SIZE (M): DIPOLE SEARCH FREQ.(MHz): 30 CM, 16 CM, 8 CM and 3 CM FREQUENCY RESOL.(Hz): OBJECTS: ALL SKY SEARCH FLUX LIMITS (W/m**2): TOTAL HOURS: CONTINUING REFERENCE: 24 COMMENTS: Search over all sky visible by single dipole.
OBSERVER(S): TROITSKII, BONDAR, & STARODUBTSEV SITE: GORKII, CRIMEA, MURMANSK AND PRIMORSKIJ REGIONS INSTR. SIZE (M): DIPOLES SEARCH FREQ.(MHz): 1863 & 927 & 600 FREQUENCY RESOL.(Hz): OBJECTS: ALL SKY SEARCH FOR SPORADIC PULSES FLUX LIMITS (W/m**2): 10**-22 W/m**2/Hz TOTAL HOURS: 1200 PER YEAR (ON AVERAGE) REFERENCE: 4 COMMENTS: Network of isotropic detectors: cross correlation from 2 or 4 sites over 8000 km.
OBSERVER(S): SLYSH, PASHCHENKO, RUDNITSKII, & LEKHT SITE: NANCAY INSTR. SIZE (M): 40x240 SEARCH FREQ.(MHz): 1667 & 1665 FREQUENCY RESOL.(Hz): 4 kHz OBJECTS: 5 OH MASERS FLUX LIMITS (W/m**2): TOTAL HOURS: 2 REFERENCE: 37, 38, 39 COMMENTS: Searched for deviation from Gaussian Emission Statistics in 5 OH Maser sources that might indicate transmissions from another civilization.
OBSERVER(S): SLYSH SITE: NANCAY INSTR. SIZE (M): 40x240 SEARCH FREQ.(MHz): 1667 & 1665 FREQUENCY RESOL.(Hz): 4 kHz OBJECTS: 10 NEAREST STARS FLUX LIMITS (W/m**2): TOTAL HOURS: REFERENCE: COMMENTS: Looked for signals at OH frequency between observations of OH Masers.
OBSERVER(S): VERSCHUUR "OZPA" SITE: NRAO INSTR. SIZE (M): 91 & 43 SEARCH FREQ.(MHz): 1419.8-1421 & 1410-1430 FREQUENCY RESOL.(Hz): 490 & 6900 OBJECTS: 9 STARS FLUX LIMITS (W/m**2): 5x10**-24 & 2x10**-23 TOTAL HOURS: 13 REFERENCE: 5 COMMENTS: 384 channel correlator on-line.
OBSERVER(S): KARDASHEV, GINDILIS, POPOV, SOGLASNOV, SPANGENBERG, STEINBERG ET AL. SITE: CAUCASUS, PAMIR, KAMCHATKA, MARS 7 SPACECRAFT INSTR. SIZE (M): 38, 60 SEARCH FREQ.(MHz): 371, 408, 458, 535 FREQUENCY RESOL.(Hz): 5 MHz OBJECTS: OMNI-DIRECTIONAL FLUX LIMITS (W/m**2): 2x10**-16 to 7x10**-15 TOTAL HOURS: 150 REFERENCE: 44 COMMENTS: "Eavesdropping" search for pulses. Synchronous dispersion reception.
OBSERVER(S): KARDASHEV, POPOV, SOGLASNOV ET AL. SITE: CRIMEA, RT-22 INSTR. SIZE (M): 22 SEARCH FREQ.(MHz): 8570 MHz FREQUENCY RESOL.(Hz): OBJECTS: GALACTIC CENTER FLUX LIMITS (W/m**2): TOTAL HOURS: REFERENCE: 44 COMMENTS: Looked for statistical anomolies in continuum emission from galactic center.
OBSERVER(S): PALMER & ZUCKERMAN "OZMA II" SITE: NRAO INSTR. SIZE (M): 91 SEARCH FREQ.(MHz): 1413-1425 & 1420.1-1420.7 FREQUENCY RESOL.(Hz): 6.4x104 & 4,000 OBJECTS: 674 STARS FLUX LIMITS (W/m**2): 10**-23 ** TOTAL HOURS: 500 REFERENCE: 6 COMMENTS: 384 channel correlator on-line.
OBSERVER(S): DIXON, EHMAN, RAUB & KRAUS SITE: OSURO INSTR. SIZE (M): 53 SEARCH FREQ.(MHz): 1420.4 REL.TO GAL.CEN. +/- 250 kHz FREQUENCY RESOL.(Hz): 10 & 1 kHz OBJECTS: ALL SKY SEARCH FLUX LIMITS (W/m**2): 1.5x10**-21 ** TOTAL HOURS: CONTINUING REFERENCE: 8 COMMENTS: Receiver is tuned to hydrogen rest frequency relative to Galactic Center (as a function of direction).
OBSERVER(S): BRIDLE & FELDMAN "QUI APPELLE?" SITE: ARO INSTR. SIZE (M): 46 SEARCH FREQ.(MHz): 22235.08 +/- 5 MHz FREQUENCY RESOL.(Hz): 3x10**4 OBJECTS: 70 STARS FLUX LIMITS (W/m**2): 1x10**-22 ** TOTAL HOURS: 140 REFERENCE: COMMENTS: Seventy solar type stars within 45 light years have been observed to date.
OBSERVER(S): WISHNIA SITE: "COPERNICUS SATELLITE" INSTR. SIZE (M): 1 SEARCH FREQ.(MHz): 3x10**9 FREQUENCY RESOL.(Hz): OBJECTS: 3 STARS FLUX LIMITS (W/m**2): TOTAL HOURS: REFERENCE: 9 COMMENTS: Search for UV laser lines.
OBSERVER(S): SHVARTSMAN ET AL. "MANIA" SITE: SPECIAL ASTROPHYSICAL OBSERVATORY INSTR. SIZE (M): 0.6 SEARCH FREQ.(MHz): 5500 Angstroms FREQUENCY RESOL.(Hz): D = 10**-6 Angstroms OBJECTS: 21 PECULIAR OBJECTS FLUX LIMITS (W/m**2): TOTAL HOURS: REFERENCE: 21 COMMENTS: Optical search for short pulses of length 3x10**-7 to 300 seconds, & narrow laser lines. Prototype for later system on 6m telescope.
OBSERVER(S): SHVARTSMAN ET AL "MANIA" SITE: SPECIAL ASTROPHYSICAL OBSERVATORY INSTR. SIZE (M): 6 SEARCH FREQ.(MHz): 5500 Angstroms FREQUENCY RESOL.(Hz): D = 10**-6 Angstroms OBJECTS: 93 OBJECTS FLUX LIMITS (W/m**2): < 3x10**-4 OF THE OPTICAL FLUX IS VARIABLE IN ANY OBJECT OBSERVED TOTAL HOURS: 250 REFERENCE: 45 COMMENTS: Have searched 30 Radio Objects with Continuous Optical Spectra to date, looking for optical pulses form potential Kardashev type II or III civilizations.
OBSERVER(S): DRAKE & SAGAN SITE: NAIC INSTR. SIZE (M): 305 SEARCH FREQ.(MHz): 1420, 1667 & 2380 (B = 3 MHz) FREQUENCY RESOL.(Hz): 1,000 OBJECTS: FOUR GALAXIES FLUX LIMITS (W/m**2): 3x10**-25 ** TOTAL HOURS: 100 REFERENCE: 10 COMMENTS: Search for type II civilizations in local group galaxies.
OBSERVER(S): ISRAEL & DE RUITER SITE: WRST INSTR. SIZE (M): 1500 MAX BASELINE SEARCH FREQ.(MHz): 1415 FREQUENCY RESOL.(Hz): 4x106 OBJECTS: 50 STAR FIELDS FLUX LIMITS (W/m**2): 2x10**-23 ** TOTAL HOURS: 400 REFERENCE: COMMENTS: Searches of "cleaned" maps prepared for the WSRT background survey, looked for positional coincidence between residual signals & AGK2 stars.
OBSERVER(S): BOWYER ET AL. (U.C. BERKELEY) "SERENDIP" SITE: HCRO INSTR. SIZE (M): 26 SEARCH FREQ.(MHz): 917-937, 1410-1430, 1602-1605, 1853-1873, 5GHz FREQUENCY RESOL.(Hz): 2x500 OBJECTS: ALL SKY SURVEY FLUX LIMITS (W/m**2): 1.15x10**-22 TOTAL HOURS: REFERENCE: 11 COMMENTS: Automated survey parasitic to radio astronomical observations.
OBSERVER(S): CLARK, BLACK, CUZZI & TARTER SITE: NRAO INSTR. SIZE (M): 43 SEARCH FREQ.(MHz): 8522-8523 FREQUENCY RESOL.(Hz): 5 OBJECTS: 4 STARS FLUX LIMITS (W/m**2): 2x10**-24 ** TOTAL HOURS: 7 REFERENCE: COMMENTS: VLBI high speed tape recorder combined with software direct Fourier transformation to produce extreme frequency resolution (non-real time).
OBSERVER(S): BLACK, CLARK, CUZZI & TARTER SITE: NRAO INSTR. SIZE (M): 91 SEARCH FREQ.(MHz): 1665-1667 * FREQUENCY RESOL.(Hz): 5 OBJECTS: 200 STARS FLUX LIMITS (W/m**2): 10**-24 ** TOTAL HOURS: 100 REFERENCE: 12 COMMENTS: VLBI high speed tape recorder combined with software direct Fourier transformation to produce extreme frequency resolution (non-real time).
OBSERVER(S): DRAKE & STULL SITE: NAIC INSTR. SIZE (M): 305 SEARCH FREQ.(MHz): 1664-1668 * FREQUENCY RESOL.(Hz): 0.5 OBJECTS: 6 STARS FLUX LIMITS (W/m**2): 10**-26 ** TOTAL HOURS: 10 REFERENCE: 13 COMMENTS: High speed tape recorder combined with optical processor to produce extreme frequency resolution (non-real time).
OBSERVER(S): WIELEBINSKI & SEIRADAKIS SITE: MPIFR INSTR. SIZE (M): 100 SEARCH FREQ.(MHz): 1420 FREQUENCY RESOL.(Hz): 20,000,000 OBJECTS: 3 STARS FLUX LIMITS (W/m**2): 4x10**-23 TOTAL HOURS: 2 REFERENCE: COMMENTS: Candidate stars are inserted into ongoing program which searches for pulsed signals with periods of 0.3 to 1.5 sec.
OBSERVER(S): HOROWITZ SITE: NAIC INSTR. SIZE (M): 305 SEARCH FREQ.(MHz): 1420 +/- 500 Hz FREQUENCY RESOL.(Hz): 0.015 OBJECTS: 185 STARS FLUX LIMITS (W/m**2): 8x10**-28 ** TOTAL HOURS: 80 REFERENCE: 14, 26 COMMENTS: Assumes that signal frequency was corrected at the source to arrive at rest in Heliocentric or barycentric laboratory frame.
OBSERVER(S): COHEN, MALKAN & DICKEY SITE: NAIC, HRO, CSIRO INSTR. SIZE (M): 305, 36, 64 SEARCH FREQ.(MHz): 1665 & 1667, 22235.08, 1612.231 FREQUENCY RESOL.(Hz): 9500, 65000, 4500 OBJECTS: 25 GLOBULAR CLUSTERS FLUX LIMITS (W/m**2): 1.8x10**-25, 1.1x10**-22, 1.5x10**-24 ** TOTAL HOURS: 40, 20, 20 REFERENCE: 15 COMMENTS: Passive search for Type II & III civilizations using astronomical data originally observed to detect H2O & OH masers in globular clusters.
OBSERVER(S): KNOWLES & SULLIVAN SITE: NAIC INSTR. SIZE (M): 305 SEARCH FREQ.(MHz): 130-500 (SPOT)* FREQUENCY RESOL.(Hz): 1 OBJECTS: 2 STARS FLUX LIMITS (W/m**2): 2x10**-24 TOTAL HOURS: 5 REFERENCE: 16 COMMENTS: Attempted "eavesdropping" using MKI VLBI tapes as in Black, et al., 1977.
OBSERVER(S): MAKOVETSKIJ, GINDILIS, ET AL. SITE: ZELENCHUKSKAYA, RATAN-600 INSTR. SIZE (M): 7.4x450 (ONE SECTOR) SEARCH FREQ.(MHz): FREQUENCY RESOL.(Hz) OBJECTS: BARNARD'S STAR FLUX LIMITS (W/m**2): TOTAL HOURS: 6 DAYS REFERENCE: 40 COMMENTS: In accordance with "Magic Time" prediction by Makovetskij for Barnard's Star and Nova Cygni 1975, signals were searched for in September, 1978.
OBSERVER(S): COLE & EKERS SITE: CSIRO INSTR. SIZE (M): 64 SEARCH FREQ.(MHz): 5000 +/- 5 MHz & +/- 1 MHz FREQUENCY RESOL.(Hz): 10**7 & 10**6 OBJECTS: NEARBY F, G & K STARS FLUX LIMITS (W/m**2): 4x10**-18 ** TOTAL HOURS: 50 REFERENCE: 17 COMMENTS: Simultaneous pulsed events in both 2 MHz & 10 MHz filters are sought in detectors having time resolution of 4 microseconds.
OBSERVER(S): FREITAS & VALDES SITE: LEUSCHNER OBSERVATORY, UCB INSTR. SIZE (M): 0.76 SEARCH FREQ.(MHz): 5500 Angstroms FREQUENCY RESOL.(Hz): OBJECTS: STABLE "HALO ORBITS" ABOUT L4 & L5 LIBRATION POINTS IN EARTH-MOON SYSTEM FLUX LIMITS (W/m**2): mv =< 14 (magnitude) TOTAL HOURS: 30 REFERENCE: 18 COMMENTS: Attempt to discover evidence of discrete objects (such as interstellar probes) in stable orbits about L4, L5 by study of 90 photographic plates.
OBSERVER(S): MICHAEL J. HARRIS SITE: INTERPLANETARY NETWORK DATA INSTR. SIZE (M): PIONEER VENUS & VENERA 11 & 12 SPACECRAFT SEARCH FREQ.(MHz): 20 keV - 1 MeV FREQUENCY RESOL.(Hz): OBJECTS: 54 GAMMA RAY BURST EVENTS FLUX LIMITS (W/m**2): TOTAL HOURS: REFERENCE: 46 COMMENTS: Attempt to find 3 GRB events in a straight line, each having same velocity (from positron-electron annihilation line) that could indicate trajectory of an interstellar spacecraft.
OBSERVER(S): JPL, UCB "SERENDIP" SITE: DSS 14 INSTR. SIZE (M): 64 SEARCH FREQ.(MHz): S&X BAND (B=10 MHz) FREQUENCY RESOL.(Hz): 2x(500 Hz) OBJECTS: APPARENT POSITIONS OF NASA SPACECRAFT FLUX LIMITS (W/m**2): 8x10**-24 ** TOTAL HOURS: 400 REFERENCE: 11 COMMENTS: Automated survey parasitic to spacecraft tracking operations using 512 channel auto-correlator & 100 channel correlator with micro-processor control.
OBSERVER(S): TARTER, CLARK, DUQUET & LESYNA SITE: NAIC INSTR. SIZE (M): 305 SEARCH FREQ.(MHz): 1420.4 +/- 2 MHz & 1666 +/- 2 MHz * FREQUENCY RESOL.(Hz): 5 & 600 OBJECTS: 200 STARS FLUX LIMITS (W/m**2): 10**-25 ** TOTAL HOURS: 100 REFERENCE: 22 COMMENTS: Rapid 1-bit sampler & high speed tape recorder run in parallel with 1008 channel correlator. Software direct Fourier transformation as in Black, et al., 1977.
OBSERVER(S): WITTEBORN SITE: NASA - U OF A, MT. LEMON INSTR. SIZE (M): 1.5 SEARCH FREQ.(MHz): 8.5 microns - 13.5 microns FREQUENCY RESOL.(Hz): 1 micron OBJECTS: 20 STARS FLUX LIMITS (W/m**2): N MAGNITUDE EXCESS < 1.7 TOTAL HOURS: 50 REFERENCE: COMMENTS: Search for IR excess due to Dyson spheres around solar type stars. Target stars were chosen because too faint for spectral type.
OBSERVER(S): SUCHKIN, TOKAREV ET AL SITE: NIRFI, GORKII, GAISH, MOSCOW INSTR. SIZE (M): SEARCH FREQ.(MHz): 9.3 MHz PULSED RADAR FREQUENCY RESOL.(Hz): 1500 OBJECTS: L4 & L5 LIBRATION POINTS OF EARTH-MOON SYSTEM FLUX LIMITS (W/m**2): TOTAL HOURS: 20 REFERENCE: 31 COMMENTS: Radar reflections sought from artifacts in parking orbits.
OBSERVER(S): LORD & O'DEA SITE: UNIVERSITY OF MASSACHUSETTS INSTR. SIZE (M): 14 SEARCH FREQ.(MHz): 115000 FREQUENCY RESOL.(Hz): 20,000 125,000 4x10**8 OBJECTS: NORTH GALACTIC ROTATION AXIS b >= 5 degrees FLUX LIMITS (W/m**2): 10**-21 ** TOTAL HOURS: 50 REFERENCE: COMMENTS: Search for signals near J=1-0 CO line frequency from a transmitter somewhere along the Galactic rotation axis.
OBSERVER(S): ISRAEL & TARTER SITE: WRST INSTR. SIZE (M): 3000 MAX BASELINE SEARCH FREQ.(MHz): 1420 FREQUENCY RESOL.(Hz): 4x10**6, 10x10**6 OBJECTS: 85 STAR FIELDS FLUX LIMITS (W/m**2): 6x10**-22 to 6x10**-24 TOTAL HOURS: 600 REFERENCE: 19 COMMENTS: Parasitic search similar to Israel & De Ruiter using "uncleaned" maps stored at Groningen & Leiden, & AGK3 catalog.
OBSERVER(S): BIRAUD & TARTER SITE: NANCAY INSTR. SIZE (M): 40x240 SEARCH FREQ.(MHz): 1420.4 +/- 320 kHz, 1665-1667 FREQUENCY RESOL.(Hz): 48.8 OBJECTS: 343 STARS FLUX LIMITS (W/m**2): 10**-24 TOTAL HOURS: ~600 REFERENCE: 29 COMMENTS: Eight level, 1024 channel auto-correlator, with stepped first LO to extend frequency coverage at 48 Hz resolution.
OBSERVER(S): SHOSTAK & TARTER "SIGNAL" SITE: WRST INSTR. SIZE (M): 3000 MAX BASELINE SEARCH FREQ.(MHz): 1420.4 REL. TO GAL. CEN. B = 156 kHz FREQUENCY RESOL.(Hz): 1200 OBJECTS: GALACTIC CENTER FLUX LIMITS (W/m**2): 10**-24 ** TOTAL HOURS: 4 REFERENCE: 41 COMMENTS: Use of interferometer to search for pulsed signals from Galactic Center in range of periods from 40 seconds to 2 hours.
OBSERVER(S): TALENT SITE: KPNO INSTR. SIZE (M): 2.1 SEARCH FREQ.(MHz): 3575-5350 Angstroms FREQUENCY RESOL.(Hz): 10 Angstroms OBJECTS: 3 STARS FLUX LIMITS (W/m**2): TOTAL HOURS: 0.2 REFERENCE: 32 COMMENTS: Search for enhanced stellar lines of praseodymium, neodymium, zirconium as evidence for dumping of nuclear wastes into stellar atmospheres.
OBSERVER(S): VALDES & FREITAS "SETA" SITE: KPNO INSTR. SIZE (M): 0.61 SEARCH FREQ.(MHz): 5500 Angstroms FREQUENCY RESOL.(Hz): OBJECTS: EARTH-MOON L1 THROUGH L5, SUN-EARTH L1, L2 FLUX LIMITS (W/m**2): 10 <= mv <= 19 (magnitude) TOTAL HOURS: 70 REFERENCE: 23 COMMENTS: Attempt to see discrete artifacts (>= few m in size) in stable orbits near Lagrange points. Studies 137 III aF photographic plates.
OBSERVER(S): HOROWITZ, TEAGUE, LINSCOTT, CHEN & BACKUS "SUITCASE SETI" SITE: NAIC INSTR. SIZE (M): 305 SEARCH FREQ.(MHz): 2840.8 (B=4 kHz) & 1420.4 (B=2 kHz) FREQUENCY RESOL.(Hz): 0.03 (1-LINEAR) & 0.03 (2-CIRCULAR) OBJECTS: 250 STARS & 150 STARS FLUX LIMITS (W/m**2): 4x10**-26 ** & 6x10**-28 ** TOTAL HOURS: 75 REFERENCE: 26 COMMENTS: Dual 64K channel real time microprocessor based spectrum analyzer with video archiving & swept LO frequency to test "magic frequencies."
OBSERVER(S): VALLEE & SIMARD-NORMANDIN SITE: ARO INSTR. SIZE (M): 46 SEARCH FREQ.(MHz): 10,522 FREQUENCY RESOL.(Hz): 185 MHz OBJECTS: GALACTIC CENTER MERIDIAN FLUX LIMITS (W/m**2): 10**-19 ** TOTAL HOURS: 72 REFERENCE: 42 COMMENTS: Search for strongly polarized signals by mapping field 1/4'x25' along l = 0 .
OBSERVER(S): HOROWITZ "SENTINEL" SITE: OAK RIDGE (HARVARD UNIVERSITY) INSTR. SIZE (M): 26 SEARCH FREQ.(MHz): 1420.40575 & 1667.3590 FREQUENCY RESOL.(Hz): 0.03 DUAL CIRCULAR (B=2 kHz) OBJECTS: SKY SURVEY FLUX LIMITS (W/m**2): 5x10**-25 TOTAL HOURS: CONTINUING REFERENCE: 26 COMMENTS: "Suitcase SETI" as the backend of automated sky survey at 2 magic frequencies over a 3 year observing period.
OBSERVER(S): DAMASHEK SITE: NRAO INSTR. SIZE (M): 92 SEARCH FREQ.(MHz): 390 +/-8 FREQUENCY RESOL.(Hz): 2x106 OBJECTS: SKY SURVEY (PULSARS) FLUX LIMITS (W/m**2): 2x10**-22 TOTAL HOURS: 700 REFERENCE: COMMENTS: Sixteen MHz sampled at 60 Hz; 8 contiguous frequency channels. Search for single dispersed pulses & telemetry (bit stream) signals.
OBSERVER(S): VALDES & FREITAS SITE: HCRO INSTR. SIZE (M): 26 SEARCH FREQ.(MHz): 1516 +/- 2.5 FREQUENCY RESOL.(Hz): 4.9 & 76 kHz OBJECTS: 80 STARS & 12 NEARBY STARS FLUX LIMITS (W/m**2): 3x10**-24 ** TOTAL HOURS: 100 REFERENCE: 30 COMMENTS: Search for radioactive tritium line from nuclear fusion by another technology.
OBSERVER(S): GULKIS SITE: DSS 43 INSTR. SIZE (M): 64 SEARCH FREQ.(MHz): 8 GHz & 2380 +/- 5 MHz FREQUENCY RESOL.(Hz): 40 kHz OBJECTS: PARTIAL SOUTHERN SKY FLUX LIMITS (W/m**2): 2x10**-22** TOTAL HOURS: 800 & ON REFERENCE: 25 COMMENTS: Sky survey of constant declination strips (3 from -28.9 to -34.3 by April '83) whenever antenna stowed.
OBSERVER(S): GRAY SITE: SMALL SETI OBSERVATORY INSTR. SIZE (M): 4 SEARCH FREQ.(MHz): 1419.5 - 1421.5 FREQUENCY RESOL.(Hz): 40 TO 1 Hz OBJECTS: SKY SURVEY & -27 FLUX LIMITS (W/m**2): 1x10**-22 ** TOTAL HOURS: CONTINUING REFERENCE: 43 COMMENTS: Dedicated meridian transit search system constructed by amateurs, operated during evenings.
OBSERVER(S): CULLERS SITE: AMSETI INSTR. SIZE (M): 2 SEARCH FREQ.(MHz): ~1420 & <1000 FREQUENCY RESOL.(Hz): OBJECTS: FLUX LIMITS (W/m**2): TOTAL HOURS: CONTINUING REFERENCE: COMMENTS: Low noise GaAs FETS & micros with satellite TV dishes, by Silicon Valley Hams, with NASA Ames consultation.
OBSERVER(S): STEPHENS SITE: INTERSTELLAR ELECTRO-MAGNETICS INSTITUTE AT HAY RIVER, NWT INSTR. SIZE (M): TWO 18mx18m (28m EQUIVALENT) SEARCH FREQ.(MHz): 1415 - 1425 FREQUENCY RESOL.(Hz): 30 kHz OBJECTS: NORTHERN SKY SURVEY FLUX LIMITS (W/m**2): Tsys~75K TOTAL HOURS: CONTINUING REFERENCE: COMMENTS: Two sixty four foot square surplus tropo-scatter dishes combined for use as dedicated amateur SETI observatory. Coverage is 30 degrees to 45 degrees declination. Discontinued due to lack of funding.
OBSERVER(S): SLYSH SITE: SATELLITE INSTR. SIZE (M): RADIOMETER SEARCH FREQ.(MHz): 37x10**3 FREQUENCY RESOL.(Hz): 4x10**8 OBJECTS: ALL SKY 3K BB FLUX LIMITS (W/m**2): T/T =< .01 TOTAL HOURS: 6000 REFERENCE: 27 COMMENTS: Lack of fluctuations in 3K background radiation on angular scales of 10**-2 Strd. rules out optically thick Dyson spheres radiating more than 1 solar luminosity within 100 pc.
OBSERVER(S): HOROWITZ "META SETI" SITE: OAKRIDGE (HARVARD UNIVERSITY) INSTR. SIZE (M): 26 SEARCH FREQ.(MHz): 1420.4 & 1665.4 & 1667.3 & 2840.8 FREQUENCY RESOL.(Hz): .05 OBJECTS: SKY SURVEY FLUX LIMITS (W/m**2): 1.3x10**-24 TOTAL HOURS: CONTINUING REFERENCE: 28 COMMENTS: Signal Processing Hardware from "SENTINEL" was replicated 128 times to produce 8.4x10**6 channels. Six sequential observations of each patch of sky are made to cover 2 orthogonal circular polarizations & 3 rest frames (Sun/Earth, Galactic Center, 3K Background).
OBSERVER(S): BOWYER, WERTHEIMER & LAMPTON "SERENDIP II" SITE: NRAO INSTR. SIZE (M): 92 SEARCH FREQ.(MHz): 400 TO 3500 FREQUENCY RESOL.(Hz): 1 OBJECTS: SKY AREAS OBSERVED BY ASTRONOMERS FLUX LIMITS (W/m**2): 4x10**-24 TOTAL HOURS: CONTINUING REFERENCE: 36 COMMENTS: Automated search that piggybacks on radioastronomical observations. Scans available 3.5 MHz of available IF 65 KHz at a time, recording events above threshold for off line processing.
OBSERVER(S): MIRABEL SITE: NRAO INSTR. SIZE (M): 43 SEARCH FREQ.(MHz): 4829.620 - 4829.776 FREQUENCY RESOL.(Hz): 76 OBJECTS: GALACTIC CENTER & 33 NEARBY STARS FLUX LIMITS (W/m**2): 6x10**-25 to 10**-24 ** TOTAL HOURS: 144 REFERENCE: 33 COMMENTS: Search at H2CO frequency. Included star HD170493 located in front of dark "anti-maser" cloud.
OBSERVER(S): COLOMB, MARTIN & LEMARCHAND SITE: IAR INSTR. SIZE (M): 30 SEARCH FREQ.(MHz): 1415.4057, 1425.4057, 1667 FREQUENCY RESOL.(Hz): 2.5 kHz OBJECTS: 78 SOLAR TYPE STARS FLUX LIMITS (W/m**2): 5x10**-23 ** TOTAL HOURS: 320 REFERENCE: 34 COMMENTS: Thirty four of seventy eight Southern Hemisphere solar type stars have been examined at 21cm to date. All stars will be searched at 21 cm & 18 cm within 1 yr.
OBSERVER(S): ARKHIPOV SITE: INSTR. SIZE (M): SEARCH FREQ.(MHz): 408 MHz FREQUENCY RESOL.(Hz): OBJECTS: HD 21899, HD 100623, HD 187691 & HD 187923 FLUX LIMITS (W/m**2): TOTAL HOURS: REFERENCE: 35 COMMENTS: Search through 408 MHz Molonglo Survey Catalog of Radio Sources found 4 solar type stars within 130" of radio source position. Suggested as leakage emission from orbital industrial processing facility ~1000 AU from star.
OBSERVER(S): TARTER, KARDASHEV & SLYSH SITE: VLA INSTR. SIZE (M): 26 (9 ANTENNAS) SEARCH FREQ.(MHz): 1612.231 FREQUENCY RESOL.(Hz): 6105 OBJECTS: G357.3-1.3 FLUX LIMITS (W/m**2): TOTAL HOURS: 1 REFERENCE: COMMENTS: Remote observation (by VLA staff) of IRAS source near galactic center to determine if source could be nearby Dyson sphere. Source confirmed as OH/IR star.
OBSERVER(S): ROBERT GRAY SITE: OAK RIDGE (HARVARD UNIVERSITY) INSTR. SIZE (M): 26 SEARCH FREQ.(MHz): 1420.405 +/- 200 KHz IN HELIOCENTRIC, LSR AND COSMIC BACKGROUND REST FRAMES FREQUENCY RESOL.(Hz): 0.05" OBJECTS: SKY POSITION CORRESPONDING TO OSURO's 1977 "WOW" SIGNAL FLUX LIMITS (W/m**2): 1.5x10**-24 W/m**2 PER CHANNEL TOTAL HOURS: 16 REFERENCE: 46 COMMENTS: Used "META SETI" system (see Ref. 27) to track position on sky that produced the "WOW" signal at OSURO in 1977.
OBSERVER(S): BANIA & ROOD SITE: NRAO INSTR. SIZE (M): 43 SEARCH FREQ.(MHz): 8665 FREQUENCY RESOL.(Hz): >= 305 OBJECTS: 24 "VEGA-LIKE" STARS WITH 60 MICRON EXCESSES (IRAS) FLUX LIMITS (W/m**2): 1 Jy TOTAL HOURS: 50 REFERENCE: 49 COMMENTS: Searching for narrow band, obviously artificial, signal at the frequency of 3He+ spin-flip, being radiated by advanced civilizations that have colonized their planetary systems.
OBSERVER(S): DAVID BLAIR ET AL. SITE: CSIRO INSTR. SIZE (M): 64 SEARCH FREQ.(MHz): 4462 MHz +/- 25 kHz FREQUENCY RESOL.(Hz): 100 OBJECTS: 100 SOLAR-TYPE STARS VISIBLE ONLY FROM SOUTHERN HEMISPHERE FLUX LIMITS (W/m**2): 2 Jy TOTAL HOURS: 60 REFERENCE: 48 COMMENTS: Magic frequency search at pi times hydrogen line frequency. 1280 channels were arranged to sample three reference frames: solar barycenter, stellar barycenter and geocenter.
OBSERVER(S): BETZ SITE: MT. WILSON INSTR. SIZE (M): 1.65 M ELEMENT OF TOWNES IR INTERFEROMETER SEARCH FREQ.(MHz): 10 MICRONS FREQUENCY RESOL.(Hz): 3.5 MHz (35 m/s) OBJECTS: 100 NEARBY SOLAR-TYPE STARS FLUX LIMITS (W/m**2): 1 MW TRANSMITTER OUT TO 20 pc TOTAL HOURS: CONTINUING REFERENCE: 52 COMMENTS: Search for IR beacons at CO2 laser frequency using narrowband acousto-optical spectrometer.
OBSERVER(S): COLOMB "META II" SITE: IAR INSTR. SIZE (M): 30 SEARCH FREQ.(MHz): 1420.4 FREQUENCY RESOL.(Hz): .05 OBJECTS: SKY SURVEY OF SOUTHERN HEMISPHERE FLUX LIMITS (W/m**2): TOTAL HOURS: CONTINUING REFERENCE: 50 COMMENTS: A duplicate of META system build by Argentinian engineers under the guidance Prof. Horowitz at Harvard and financed by the Planetary Society. Same search stragegy as META.
OBSERVER(S): GRAY SITE: OAK RIDGE (HARVARD UNIVERSITY) INSTR. SIZE (M): 26 SEARCH FREQ.(MHz): 1420.4 MHz RELATIVE TO GALACTIC STANDARD OF REST +/- 200 kHz FREQUENCY RESOL.(Hz): .05 OBJECTS: M31 and M33 FLUX LIMITS (W/m**2): TOTAL HOURS: 50 REFERENCE: 51 COMMENTS: Long integrations (5 hours per HPBW) on 10**11 stars at once, looking for low duty cycle signals.
OBSERVER(S): STEFFES & DeBOER SITE: NRAO/TUCSON INSTR. SIZE (M): 12 SEARCH FREQ. (MHz): 203x10**3 FREQUENCY RESOL. (Hz): 32 OBJECTS: 40 STARS + 3 LOCATIONS NEAR GALACTIC CENTER FLUX LIMITS (W/m**2): 2.3x10**-19 TOTAL HOURS: 25 REFERENCE: 52 COMMENTS: No artificial signals detected near positronium line.
OBSERVER(S): NASA "HRMS" TARGETED SEARCH SITE: ARECIBO, PR INSTR. SIZE (M): 305 SEARCH FREQ. (MHz): 1300 to 2400 FREQUENCY RESOL. (Hz): 1, 7, 28 simultaneously, dual circular polarization OBJECTS: 25 STARS FLUX LIMITS (W/m**2): 5x10**-24 TOTAL HOURS: 200 REFERENCE: 53 COMMENTS: No detection of non-human technology.
OBSERVER(S): NASA "HRMS" SKY SURVEY SITE: GOLDSTONE, CA INSTR. SIZE (M): 26, 34 SEARCH FREQ. (MHz): 1700 and 8300 to 8700 FREQUENCY RESOL. (Hz): 19 OBJECTS: 72 sky frames at X-band and 130 sky frames repeatedly mapping 3 Galactic Plane regions at L-band in sequential circular polarization FLUX LIMITS (W/m**2): 9.8x10**-23 TOTAL HOURS: 1,386 REFERENCE: 53 COMMENTS: No detection of non-human technology.
OBSERVER(S): BOWYER, WERTHIMER & DONNELLY "SERENDIP III" SITE: ARECIBO INSTR. SIZE (M): 305 SEARCH FREQ. (MHz): 424 - 436 FREQUENCY RESOL. (Hz): 0.6 OBJECTS: Survey of the sky visible from Arecibo FLUX LIMITS (W/m**2): 5x10**-25 TOTAL HOURS: CONTINUING REFERENCE: 54 COMMENTS: 4 million channels are under observation. Commensal search occurring at twice sidereal rate in backwards direction while radio astronomers track targets using the feeds and receivers on carriage house 1.
OBSERVER(S): PROJECT PHOENIX SITE: ATNF/PARKES INSTR. SIZE (M): 64 SEARCH FREQ. (MHz): 1200 - 3000 FREQUENCY RESOL. (Hz): 1 OBJECTS: 206 stars, 1200 - 1750 MHz; 105 stars, 1750 - 3000 MHz FLUX LIMITS (W/m**2): 1.32x10**-25 for half of 1750 - 3000 MHz observations; 1.86 x 10**-25 for all other observations TOTAL HOURS: 2600 REFERENCE: 55, 56 COMMENTS: Immediate two-site, pseudo-interferometric follow-up observations of candidate signals. No detection of non-human technology.
OBSERVER(S): GREY SITE: VLA INSTR. SIZE (M): 27 element array of 26-m antennas SEARCH FREQ. (MHz): 1420 FREQUENCY RESOL. (Hz): 6104 (B=781 kHz), 381 (B=195 kHz) OBJECTS: OSU "WOW" locale FLUX LIMITS (W/m**2): 10, 100 mJy/beam/channel TOTAL HOURS: 4 REFERENCE: 57, COMMENTS: Search of the OSU "WOW" locale with 4 arcsec synthesized beam.
OBSERVER(S): MAUERSBERGER, WILSON, ROOD, BANIA, HEIN, and LINHART SITE: IRAM INSTR. SIZE (M): 30-m SEARCH FREQ. (MHz): 203,000 FREQUENCY RESOL. (Hz): 9700 OBJECTS: 17 stars and positions FLUX LIMITS (W/m**2): TOTAL HOURS: 4.5 REFERENCE: 58, COMMENTS: Search at the spin-flip line of positronium. List compiled by Jill Tarter, SETI Institute SETI Institute - 2035 Landings Drive - Mountain View, CA (415) 961-6633 |