1. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    Last edited by a moderator: Aug 20, 2016
  2. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    I can understand scientists wanting more evidence, but you would think the Chemians would jump
    For (any) fans of ShiteHawk ChemCam, RoboChemtard is coming, but the spec. is proving ridiculous DSCF2809.JPG .. Here is the birth of the main drive:
     
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  3. Mick West

    Mick West Administrator Staff Member

    That looks very cool, except for the name, which would break the politeness policy here.

    SHCC is also very cool.
     
  4. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    I did wonder about that. I could change it by deed poll.
    I aim to track to the diffraction limit of the telesope over a second or so, and an absolute accuracy of about 100th of a degree.
    I have a simple mount for the camera which tracks smoothly, but the mems yaw giro difts badly, so it can't be left do do its own thing.

    ps.
    The idea behind the [tangent] geometry is that the ball joint between the ballscrew and telescope pivot and linear bearings follows a scaled down version of path of the aircraft. Luckily for us that means nearly constant speed, heading and altitude. An alt/az drive would mean an infinite slew rate for an aircraft overhead where it is most photogenic.
     
    Last edited: Aug 20, 2016
  5. Ray Von Geezer

    Ray Von Geezer Senior Member

    I just Google'd SHCC and saw some YouTube videos - they're awesome. Is it overlaying the flight info in real time, if so did you create the software and are you planning on releasing it?

    Ray Von
     
  6. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    Yes, I get the adsb data direct from the aircraft as there would be unknown delays if I hacked FR , for instance. I use dump1090 and Rasberry pi. Older versions using the PC and other software used up too much processor. I used a cheap dvbt? dongle for most of those but have gone over to the very good Flightaware dongle, filter, and antenna. I get so much data my software now crashes after a while..

    I don't plan to release it _ publicly_ as the Labview licensing situation is unclear, to say the least.

    The overlayed graph needs to be aligned, scaled, rotated etc. to fit known landmarks, but I could in principle set it up and run here for any IP webcam covered by my adsb receiver, or any other that can be accessed. I could then think about compiling a version for somebody.

    I am using a foscam pzt webcam, but could use any I could find a command for to return a jpg. It worked ok with my phone as a webcam.

    The videos are screen captures.

    It is quite a lot of fiddling to do, but I am open to the general idea of sharing.
     
    Last edited: Aug 20, 2016
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  7. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    Last edited: Aug 20, 2016
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  8. Mick West

    Mick West Administrator Staff Member

  9. NoParty

    NoParty Senior Member

  10. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    Son of RCT.
    This one is just a gimbal mount, of the type used for drones, I made for my camera. SHCC enables me to pick a target and sends it to another VI (Labview program) which sends estimated elevation and azumuth data via bluetooth to the mount at a rate of100Hz.
    http://www.olliw.eu/storm32bgc-v1-wiki/Main_Page
    I plan to add an optical shaft encoder to cure the drifting yaw azis.
     
    Last edited: Aug 20, 2016
  11. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    • Informative Informative x 1
  12. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    PS. If you feed one of the companies such as Flight Radar data you get shared MLAT data which often is not available to the public.
     
  13. Astro

    Astro Member

    I've been developing similar software, more for automated video tracking of rocket launches.


    It should be possible to do similar kinds of plane watching with it, but I haven't tested it for that lately. Integrating ADS-B data for plane watching would be cool, but to be honest I don't know much about the hardware side of things or how to capture that data. I'm using an off-the-shelf telescope with an Alt-Az mount which doesn't even give direct drive rate control in the command set (don't ask me how I pulled it off). Obviously that does have the limitation of not being able to follow close to the zenith. It's a natural fit for tracking satellites though since the telescope already knows (and can be polled for) its celestial coordinates.
     
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  14. Mick West

    Mick West Administrator Staff Member

    Another approach is the Optic Tracker software controlling a "GoTo" telescope

    Source: https://www.youtube.com/watch?v=6v3J6MSkTgs


    I wonder if combining the two approaches might be useful, although real-time ADS-B based tracking seems pretty solid as-is.
     
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  15. Astro

    Astro Member

    My understanding is that optic tracker does support ADS-B based acquisition for tracking, but it is not compatible with my telescope (Meade LX200 Classic). In fact as far as Meade goes it only supports the newer autostar LX200s, nothing else. That's what originally motivated me to start writing it. I'm coding mine to support a much wider range of Meade telescopes (and hopefully include support for Celestrons as well).
     
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  16. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    Great stuff. It would be good if someone did it with javascript, HTML, or something. I too bought an Alt-Az mount, but so far, controlling via a PC is useless as the documentation is poor and it wants to do silly things like a crash stop before you can change speed. Can you imagine a car like that! There is plenty of information on getting the ADSB data with a ~£5 dongle and free software on most of the FlightRadar-type sites and others like http://www.satsignal.eu/raspberry-pi/dump1090.html

    There is an HTML steam which is easy to use.
    A 'Raw' hex stream which is a bit of a pain but contains most information.
    A 'Basetation steam' port 30003 which I use mainly because the Dump1090? puts a high resolution time stamp on it.
     
    Last edited: Aug 22, 2016
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  17. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    I got an Optic Tracker trial but did not do much with it. My telescope cam is a very nice chinese webcam that will stream HD over IP. I think the Optic Tracker insisted on USB. THis was done with the RCT telescope and said cam from one mile:

    Source: https://www.youtube.com/watch?v=1qMvl_BA7ao

    Look, no hedge!

    Probably this cam: http://www.elpcctv.com/hd-1080p-mini-atm-ip-camera-with-36mm-hd-lens-p-62.html
     
    Last edited: Aug 22, 2016
  18. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    I think there is some open-source universal language for telescopes (used by optic Tracker?) but I need to look into that again. My mount is an Skywatcher Allview, but basically I understand that a lot of these cheaper telescopes are made by the same chinese OEM. for Celestrons etc. so I could maybe test your software for you :)
     
  19. Astro

    Astro Member

    I believe you're referring to ASCOM. I don't think Optic Tracker uses ASCOM, and neither could I. I tried it at first, but quickly ran into problems. ASCOM wasn't designed to support high speed tracking like this. It might be possible to use the direct drive rate commands with ASCOM for the telescope mounts that will support that command, but mine will not. The method I'm using right now simply doesn't work through ASCOM due to throughput limitations; ASCOM forces the telescope to acknowledge the completion of the last command before it will accept a new command.
     
  20. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    That's the one! Thanks for the info.
     
  21. Trailblazer

    Trailblazer Moderator Staff Member

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  22. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    People.. ahem.. are so ..-poor at it. Something had to be done! I got Orgone under the hood!
    ps. Have you seen this series? If only I can get close the the quality!

    Source: https://www.youtube.com/watch?v=28trJ8FdHO0
     
    Last edited: Aug 23, 2016
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  23. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    DSCF2998.JPG
     
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  24. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    FlightAware have tarted up the local web server for Dump 1090, although some things don't seem to work, and they broke SHCC by changing the format. I think it is more appealing to most people flightaware dump 1090.PNG .
     
  25. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    Just a note to say that I have not given up. It is going to work, but once I know that I tend to lose interest. I spent many weeks messing with oils and damping, which was never in the plan. The main surprise there was that greases have stiction, and silicone greases are oils with 'fillers' like fumed silica, which are extremely abrasive, like microscopic eggshells. I ended up making my own by filling viscous silicone oil with graphite. Small amounts of compliance, or friction can bypass damping once the amplitude drops to low levels. The main killer is that it can never be completely autonomous, because some aircraft do not transmit accurate enough data. There seem to be about half a dozen different avionics systems in use, with different accuracies, and approaches to dither. Possibly late adopters have better systems. Delta are one of the best. I attach a very few examples plots from different aircraft systems, showing speeds derived from individual position transmissions . aal 705.PNG baw183.PNG clx767.PNG cfg2ec.PNG dlh462.PNG ryr663l.PNG
     
    Last edited: Sep 30, 2017
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  26. Clouds Givemethewillies

    Clouds Givemethewillies Active Member

    It is one of the ugliest things I have ever seen, but it is not practical to start again from scratch, even though the best things in life are generally useless.