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    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VHKV2NYR2RZB53DAQQU3OXJBY3K6UD6Q/?format=api",
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    "message_id": "CADS7kXWtCnG99+GTFRtEjH-pUnq_W+AzOXONB1A0DB3CBY2E_A@mail.gmail.com",
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    "sender": {
        "address": "sasha.nyc09 (a) gmail.com",
        "mailman_id": "78c33a7b1b224c3aa63512d6ad1a89e4",
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    "sender_name": "Sasha Tim",
    "subject": "[AMSAT-BB] Re: IO-117 status - we're back",
    "date": "2023-10-27T13:56:49Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
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        "status": "neutral"
    },
    "content": "Hi Zach,\n\nThe reason against JPEG is primarily because of the corruption\ncapabilities. If the first packet is not received (which is often the\ncase), the entire image will be corrupt. If a single packet is missed, it\nruins the image for all of the packets after.\n\nMultiple satellites use raw JPEG in space currently, and it is not working\nwell.'\n\nA better format to use would be SSDV (https://github.com/fsphil/ssdv),\nwhich has been tested on HAB flights for a long time, and was originally\nimplemented on an Atmega328!\n\nIt retains the JPEG compression capabilities, while simultaneously\nprotecting the imagery against potential packet loss.\n\nThere were only three satellites that I know of that used SSDV in space,\nthat is, GASPACS-1 and the Chinese Lunar Orbiter cubesats a while ago.\n\nOn Thu, Oct 26, 2023 at 3:46 PM Zach Metzinger via AMSAT-BB <\[email protected]> wrote:\n\n> On 10/26/23 14:13, Sasha Tim via AMSAT-BB wrote:\n> > Any projects working on getting into MEO: PLEASE put in a camera (and\n> > transmit in a format that is not JPEG)!\n>\n> Hello Sasha,\n>\n> Cameras do require a license, at least for the US. Not insurmountable,\n> but one has to consider this aspect.\n>\n> What's wrong with JPEG? You'd prefer GIF? (or TIFF?) :-)\n>\n> --- Zach\n> N0ZGO\n>\n> -----------------------------------------------------------\n>\n> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available\n> to all interested persons worldwide without requiring membership. Opinions\n> expressed\n> are solely those of the author, and do not reflect the official views of\n> AMSAT-NA.\n> Acceptable Use and Privacy Policies available at\n> https://www.amsat.org/about-amsat/\n>\n> View archives of this mailing list at\n> https://mailman.amsat.org/hyperkitty/list/[email protected]\n> To unsubscribe send an email to amsat-bb-leave(a)amsat.org\n> Manage all of your AMSAT-NA mailing list preferences at\n> https://mailman.amsat.org\n>\n\n\n",
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