Email Detail

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/2CY7IBE3ZO34SO7KNR3X7QYZEE5AM3TS/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "001801c84918$b0469e80$0200a8c0@kc6uqh",
    "message_id_hash": "2CY7IBE3ZO34SO7KNR3X7QYZEE5AM3TS",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/VRAZHFDIIVIFCNUWFWMWTVNCYB2X73VE/?format=api",
    "sender": {
        "address": "kc6uqh (a) cox.net",
        "mailman_id": "d9201820d18047e4a2772c86bda5e111",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/d9201820d18047e4a2772c86bda5e111/emails/?format=api"
    },
    "sender_name": "kc6uqh",
    "subject": "[amsat-bb] Re: How to calibrate the azimuth angle?",
    "date": "2007-12-28T06:12:56Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/V24QKPV7Z3OYPGTEAKQOPSW6SIAG2SLC/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/NK6POUSTIGNYP5BTVEUX2KWNZANY3H5Q/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Instatrack will give you the azmuth and elevation of the Sun vs time. Use \nGPS for time and You now have an accurate calibration.\n\nArt, KC6UQH\n----- Original Message ----- \nFrom: \"Jeff Mock\" <[email protected]>\nTo: <[email protected]>\nSent: Thursday, December 27, 2007 5:15 PM\nSubject: [amsat-bb] Re: How to calibrate the azimuth angle?\n\n\n> Well, now that everyone has trashed compasses.  Here's the compass that\n> I really really like:\n>\n>    http://www.suunto.com\n>\n> Click on \"precision instruments\", it's the Suunto Tandem.  It's a\n> compass and clinometer in a nice machined aluminum package.  It has\n> optical sites for both instruments that really improves accuracy (if you\n> ask me). It's really well made and it's from Finland...  If nothing\n> else, you can walk around measuring the height of trees.\n>\n> jeff\n>\n> Bruce Bostwick wrote:\n>> A compass won't give you accurate azimuth unless you know for sure\n>> that you're not near any large masses of metal, and even then, you\n>> will need to know your local magnetic deviation.  I tried to use a\n>> compass to align a satellite dish once, and it put me so far off on\n>> the azimuth I never did find the satellite that way, even taking\n>> magnetic deviation into account.  You might have better luck where you\n>> are, but it's a lot of work to do it that way even if it does work.\n>>\n>> A much easier solution is to look at your location in Google Earth and\n>> find the orientation of a nearby road, and use that as your azimuth\n>> reference.  That automatically gets you azimuth relative to true\n>> north, which makes the job considerably simpler.  If you don't have\n>> nearby roads that are straight enough to be useful, find a distant\n>> visible landmark (like a radio tower) and determine what its azimuth\n>> is from your location, then use it as a reference point and find your\n>> desired azimuth from there.  (A long time ago, I worked out a formula\n>> for determining the bearing to a distant landmark using only the\n>> latitude and longitude of it and the observing location.  It's on\n>> paper somewhere, unfortunately I don't know where and I'd have to redo\n>> the math at this point.  But if you're interested, let me know.  It's\n>> not too difficult to measure the orientation of the baseline between\n>> the two using Google Earth though ..)\n>>\n>> On Dec 26, 2007, at 11:08 PM, Chiu-Teng Tsai wrote:\n>>\n>>> Dear all,\n>>>\n>>>  I am Chiu-Teng Tsai (BM6ERA) from Taiwan. Now we are building a\n>>> mobile ground station. One of our problem is how to calibrate the\n>>> azimuth angle. Use compass only, or any better solution? Thanks for\n>>> your help!\n>>>\n>>> Best regards,\n>>>\n>>> Chiu-Teng Tsai\n>>\n>> \"On this one we'd like to think of ourselves collectively as 'da men',\n>> sir.\" -- Toby Ziegler\n>>\n>>\n>>\n>> _______________________________________________\n>> Sent via [email protected]. Opinions expressed are those of the author.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite \n>> program!\n>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>>\n>\n> _______________________________________________\n> Sent via [email protected]. Opinions expressed are those of the author.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb \n\n",
    "attachments": []
}