Recent content by cristiapi

  1. cristiapi

    Solar radiation pressure rotation matrix

    No doubt. :)
  2. cristiapi

    Solar radiation pressure rotation matrix

    In my propagator, I’m currently using a SPICE library function to rotate the SRP Sun-satellite acceleration vector to the ECI frame, but I’m not totally sure that the result is correct. Since my skill in building rotation matrices is poor, I'd like to ask if someone can help me.
  3. cristiapi

    New Release D3D9Client Development

    I overwritten the old installation with "D3D9ClientR3.10-forOrbiter2016(r1162).zip", then I overwritten the DLL with your new zip; worked for me. :thumbup: EDIT: do you plan to upload a release version of that DLL? ---------- Post added at 11:12 ---------- Previous post was at 11:08...
  4. cristiapi

    New Release D3D9Client Development

    I see "R1 [Aug 30 2016]".
  5. cristiapi

    New Release D3D9Client Development

    I downloaded the 6-Sep-2019 version; same problem. I downloaded a very old version (2016) as suggested by Kuddel; problem solved, for me.
  6. cristiapi

    New Release D3D9Client Development

    I see the opposite with my hardware, but I have an old GTX 660 Ti. I also use a fps limiter (200 fps).
  7. cristiapi

    New Release D3D9Client Development

    Good! I'll do it. Windows 7 64 bit. No significant changes since 2016. The problem is that with the new D3D9 version I see the FPS display (RivaTunerStatisticsServer) flashing near the center of the window, like D3D9 is repeatedly opening and closing a new window. Anyway, is not a problem, an...
  8. cristiapi

    New Release D3D9Client Development

    Older version I installed the version 25-Feb-2019, but it's not good for my hardware. Same problem with D3D9ClientR3.5-forOrbiter2016(r1061).zip. Is there an even older version? Probably I need a very old version, but I forgot the working version. I don't need the most up to date version, I...
  9. cristiapi

    OHM OSIRIS-REx

    If I correctly understand the doc "PlanetTextures.pdf" page 9, the elevation resolution is 1 m. Very good! :-) The most updated values used by NAIF are: RA= 85.4567, DE= -60.3574: https://naif.jpl.nasa.gov/pub/naif/ORX/kernels/pck/bennu_v14.tpc which is 173.477 deg over the ecliptic, but...
  10. cristiapi

    OHM OSIRIS-REx

    You're right! With the default graphics it looks good. With SPICE I obtain the "exact" location of the bodies, but if I also want a correct Bennu prime meridian location, I also need to bother with those parameters (I remember the same for Pluto/Charon synchronism). The values are 214.55 m...
  11. cristiapi

    OHM OSIRIS-REx

    The first strange thing is that that line is purple in my installation (Orbiter 2016). Beside that, I attached one image of Bennu and one of the Earth (for comparison). I used the global frame (F2) and I oriented the camera to see the retrograde Bennu rotation. To see the line passing over the...
  12. cristiapi

    OHM OSIRIS-REx

    I'm probably misinterpreting the meaning of the lines, but I think there's something strange. I'll do some testing... Ooops! You're right. Thank you. I already read PlanetTextures.pdf, it's the reason I asked here. :-) I'll try the procedure for the triaxial model. Don't waste your time. :-)...
  13. cristiapi

    OHM OSIRIS-REx

    Visually stunning! But if you enable the "Visual helpers", the Planetarium mode -> Target Equator line doesn't pass over the equator. Also, if you use Obliquity = 177.6 (a reasonably accurate value), the spin axis seems to be about 100 deg (the ecliptic blue line is almost vertical instead of...
  14. cristiapi

    OHM OSIRIS-REx

    No idea on how much work is needed, so I can only ask. It would be useful to also have the best fit ellipsoid for the Bennu model; no texture, only a triaxial ellipsoid (I attached the .bmp). I'd be very grateful if you'd also create this model, but if you don't have time, just ignore this post.
  15. cristiapi

    OHM OSIRIS-REx

    Wonderful! :thumbup:
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