OSIRIS-APEX (Was OSIRIS-REx now on the way to Apophis)

    • Offizieller Beitrag

    https://www.asteroidmission.org/
    Very strong but low on the horizon (7 degrees here)
    8445.768MHz +/- Doppler
    2.4m PF dish
    125 deg. K total system NT
    Spectrum inverted due to high side LO.

    Bilder

    1.2m Prodelin 3122 az-el with one of:
    S: Helical feed, 0.8dB NF LNA, X: 1.2dB NF LNA, conical feed,
    Ku 12-18GHz: corrugated conical feed, 1.5dB NF LNA, Ku (Standard): SMW Q-PLL type C, Prodelin feed. Ku (Extended): 11.3GHz LO SMW & Prodelin Feed Ka: Gilat ex-ODU PLLs Gilat feeds, Ka 18-26.5GHz: Patriot feed, home made 4dB NF LNA, Ka DSN: Corrugated conical feed, home made 3dB NF Down-Converter

    1.5m IRTE, Polar mount with Octagon OSLO mod. C120, IRTE feed
    40km East of London, UK

    Einmal editiert, zuletzt von s-band ()

    • Offizieller Beitrag

    Not so strong on the 1.2m dish. The trees don't help. The noise change on waterfall shows the difference between sky & tree noise.
    9GHz LO

    • Offizieller Beitrag

    Much better now it's clear of the trees. -112dBm Madrid (34m dish)

    • Offizieller Beitrag

    -112dBm Madrid (34m dish)
    9GHz LO

    • Offizieller Beitrag

    9GHz LO

    Bilder

    1.2m Prodelin 3122 az-el with one of:
    S: Helical feed, 0.8dB NF LNA, X: 1.2dB NF LNA, conical feed,
    Ku 12-18GHz: corrugated conical feed, 1.5dB NF LNA, Ku (Standard): SMW Q-PLL type C, Prodelin feed. Ku (Extended): 11.3GHz LO SMW & Prodelin Feed Ka: Gilat ex-ODU PLLs Gilat feeds, Ka 18-26.5GHz: Patriot feed, home made 4dB NF LNA, Ka DSN: Corrugated conical feed, home made 3dB NF Down-Converter

    1.5m IRTE, Polar mount with Octagon OSLO mod. C120, IRTE feed
    40km East of London, UK

    • Offizieller Beitrag

    HDSDR Software this time. -111dBm on DSS54, Madrid.
    9GHz LO

    • Offizieller Beitrag

    -117dBm on DSS55, Madrid, 917kBd data at the time
    205.5 million km
    9GHz LO, 1.2m dish

    • Offizieller Beitrag

    -119dBm on DSS55, Madrid, 600kBd data at the time
    283 million km
    9GHz LO, waterfall spectrum inverted, 1.2m dish

    • Offizieller Beitrag

    -118dBm on DSS55, Madrid, 920kBd data at the time
    232 million km
    8445.683MHz 21.4MHz IF

  • s-band

    Hat den Titel des Themas von „OSIRIS-REx (Chasing near Earth Asteroid Bennu)“ zu „OSIRIS-REx (ORX, Orbiting near-Earth asteroid Bennu)“ geändert.
    • Offizieller Beitrag

    Nice signal from 282.7Mkm, -156dBm on a 1.2m dish .

    -119.7dBm on DSS55, Madrid, 600kBd


    1.2m Prodelin 3122 az-el with one of:
    S: Helical feed, 0.8dB NF LNA, X: 1.2dB NF LNA, conical feed,
    Ku 12-18GHz: corrugated conical feed, 1.5dB NF LNA, Ku (Standard): SMW Q-PLL type C, Prodelin feed. Ku (Extended): 11.3GHz LO SMW & Prodelin Feed Ka: Gilat ex-ODU PLLs Gilat feeds, Ka 18-26.5GHz: Patriot feed, home made 4dB NF LNA, Ka DSN: Corrugated conical feed, home made 3dB NF Down-Converter

    1.5m IRTE, Polar mount with Octagon OSLO mod. C120, IRTE feed
    40km East of London, UK

    • Offizieller Beitrag

    -121dBm on DSS55, Madrid with a data rate of 413kBd

    321Mkm OSIRIS-REx preparing for the touch-and-go collection from Bennu

    https://www.nasa.gov/feature/g…gins-its-countdown-to-tag



    RX Tuned to 8445.545MHz

    • Offizieller Beitrag

    Congratulations to the OSIRIS-REx team for the touch and go collection (TAG) yesterday.

    Unfortunately ORX was out of sight to Europe at the time. This plot was taken whilst it was downlinking to Madrid a few hours before the TAG.

    8445.609MHz, -121dBm on both DSS54 & 55, Madrid.

    339.2Mkm

  • Very strong, at about 60,000km, just after the sample drop. Data and ranging sidebands visible.

    1.2m dish, 9GHz (high side) LO


       

    1.2m Prodelin 3122 az-el with one of:
    S: Helical feed, 0.8dB NF LNA, X: 1.2dB NF LNA, conical feed,
    Ku 12-18GHz: corrugated conical feed, 1.5dB NF LNA, Ku (Standard): SMW Q-PLL type C, Prodelin feed. Ku (Extended): 11.3GHz LO SMW & Prodelin Feed Ka: Gilat ex-ODU PLLs Gilat feeds, Ka 18-26.5GHz: Patriot feed, home made 4dB NF LNA, Ka DSN: Corrugated conical feed, home made 3dB NF Down-Converter

    1.5m IRTE, Polar mount with Octagon OSLO mod. C120, IRTE feed
    40km East of London, UK

  • Thanks to OK9UWU's pipeline for Satdump the recording from yesterday could be demodulated. Unfortunately all that can be seen is a binary stream that contains a blocks of ASCII so it's probably just telemetry.


    Today ORX was about 24dB weaker which is about right for it going from 60000km yesterday to 1Mkm when I looked today. There's no chance of getting much from it until it returns again.


       

    1.2m Prodelin 3122 az-el with one of:
    S: Helical feed, 0.8dB NF LNA, X: 1.2dB NF LNA, conical feed,
    Ku 12-18GHz: corrugated conical feed, 1.5dB NF LNA, Ku (Standard): SMW Q-PLL type C, Prodelin feed. Ku (Extended): 11.3GHz LO SMW & Prodelin Feed Ka: Gilat ex-ODU PLLs Gilat feeds, Ka 18-26.5GHz: Patriot feed, home made 4dB NF LNA, Ka DSN: Corrugated conical feed, home made 3dB NF Down-Converter

    1.5m IRTE, Polar mount with Octagon OSLO mod. C120, IRTE feed
    40km East of London, UK

  • s-band

    Hat den Titel des Themas von „OSIRIS-REx (ORX, Orbiting near-Earth asteroid Bennu)“ zu „OSIRIS-APEX (Was OSIRIS-REx now on the way to Apophis)“ geändert.
  • OSIRIS-Rex has been renamed OSIRIS-APEX. Extract from here:


    The OSIRIS-APEX mission will reprise the discoveries of the OSIRIS-REx spacecraft at a second asteroid, Apophis. An hour after Apophis’s dramatic close approach to Earth on April 13, 2029, The OSIRIS-APEX spacecraft will use Earth’s gravity to put itself on a course to rendezvous with the asteroid to begin an 18-month campaign of investigation and discovery.

    1.2m Prodelin 3122 az-el with one of:
    S: Helical feed, 0.8dB NF LNA, X: 1.2dB NF LNA, conical feed,
    Ku 12-18GHz: corrugated conical feed, 1.5dB NF LNA, Ku (Standard): SMW Q-PLL type C, Prodelin feed. Ku (Extended): 11.3GHz LO SMW & Prodelin Feed Ka: Gilat ex-ODU PLLs Gilat feeds, Ka 18-26.5GHz: Patriot feed, home made 4dB NF LNA, Ka DSN: Corrugated conical feed, home made 3dB NF Down-Converter

    1.5m IRTE, Polar mount with Octagon OSLO mod. C120, IRTE feed
    40km East of London, UK

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