• ORBITER-FORUM will be temporarily closed at 2026-07-23 18:00 UTC while we complete some OF maintenance tasks. The amount of downtime is expected to take up to one hour, but probably less.

Search results

  1. C

    Phoenix Mars Landing Thread

    See this thread: http://orbiter-forum.com/showthread.php?t=1909 Regards
  2. C

    Phoenix Mission Upgrade

    The correct value for SidRotOffset is -0.7719243, from the IAU (International Astronomical Union) and USGS. This value will be included in the next Orbiter version. If you're landing is still off, it may be that your aerodynamics are a little off, or the atmospheric model in Orbiter isn't...
  3. C

    In need of graphics card

    If you definitely need a PCI graphics card, then you might look at this one: Diamond Multimedia S9250 PCI 256SB this is about as good as your going to get for a PCI card. Regards
  4. C

    In need of graphics card

    If you have an AGP 2x slot, you might consider an NVidia GeForce 7600 card. I think you can get these for under $100 US now. My main machine is running one of these, and the performance is reasonable for recent games (and Orbiter). Graphics cards are like another computer inside your computer...
  5. C

    Projecting Cassini's Mission into the future

    I'd vote for "Impact main rings" The spacecraft may be destroyed, but the possibility of imaging the rings "up-close" would be a big plus. And, if the spacecraft is not destroyed, you get another pass, and maybe another... Regards
  6. C

    Creating planetary rings

    There are Jupiter rings included in the "Outer Planets" add-on, but I'm not sure who made them. If you can get that add-on and see how those were done, it might help you out. Regards
  7. C

    Creating planetary rings

    Maybe I can give a little help. I created a new Saturn ring texture based on Cassini pix a few years ago (which you should still be able to find). What I did was to take the default Saturn_ring.tex files from Orbiter, and dis-assembled them into individual dds files, then created new dds files...
  8. C

    Missions to the Sun: NASA's Solar Probe Plus and ESA's Solar Orbiter

    Press release here: http://www.jhuapl.edu/newscenter/pressreleases/2008/080501.asp Regards
  9. C

    Converting MOI from SI to imperial ??? How?

    The units for inertia are mass * length^2. So your original values should have units of kg * m^2, and not kg / m^2. If you calculate the conversion from kg * m^2 to lb * ft^2, you should get the correct result. Regards
  10. C

    Apollo launch audio

    If you look here: http://history.nasa.gov/ap08fj/01launch_ascent.htm there is a transcript of the Apollo 8 launch starting from 1 hour, 30 minutes prior to launch, and continuing through the entire mission. Prior to launch, the transcript reports only the PAO comments (with some...
  11. C

    Need help with big addon - Voyage by Baxter

    Meshes are text-viewable files, so if you open up the mesh file with a text viewer (like Notepad), and go down to the end, the names of the textures used are listed there. Regards
  12. C

    Visibility of ISS

    A good test of your binoculars (and your eyesight) is to observe Jupiter. Coincidentally, it has an apparent angular size similar to the ISS of about 40 arcseconds. If you can detect that Jupiter is a spherical body rather than a point of light, then you should also be able to see some details...
  13. C

    Visibility of ISS

    It is possible to see a little detail when looking at the ISS through good binoculars. The actual size is something like 40 arcseconds at closest approach (YL3GDY's calculation is a little bit off). I myself haven't had great results, but then I need to get better binoculars. Regards
  14. C

    Sin/cos in C++

    I find this a question bit confusing, so to clarify a bit: when you "take the sin of something", that something is an angle, and the return value is dimensionless. The angle you provide can be expressed in degrees or radians, and C(++) is expecting radians, so you may need to convert the...
  15. C

    SPICE module

    I've done some more testing and I can confirm that there is a problem with the way Orbiter behaves when you report EPHEM_PARENTBARY. Basically, it looks like it ignores it, and always computes positions relative to the parent true position, and not the parent barycenter. I've reported this...
  16. C

    Soyuz TMA-11 Landing

    This photo is great! Yuri Malenchanko (the cosmonaut on the right) doesn't look too happy to be back on Earth after 6 months in space (maybe because he is sitting on hard ground instead of the traditional padded chair). And who is that guy on the left? Regards
  17. C

    Return of Grand Explorations...TBR

    The current plan is release the GEP missions in chronological order, which would be: 1) Pioneer 10 & 11 to Jupiter and Saturn 2) Mariner 10 to Venus and Mercury 3) Viking 1 & 2, orbiting and landing on Mars 4) Voyager 1 & 2 to Jupiter, Saturn, Uranus, and Neptune 5) Magellan to orbit Venus 6)...
  18. C

    Return of Grand Explorations...TBR

    Hi missleman01, Carl here. Good to hear from you. I think one of my e-mail accounts has been mis-behaving, so I apologize for my lack of communication. Check your private messages, I'll send you alternate e-mails. I plan on a rather extensive update which will include: * Updating the...
  19. C

    Orbital determination for spacecraft

    Have a look at Appendix C in the Orbiter documentation (Orbiter.pdf). Regards
  20. C

    SPICE module

    Oops, I got my data switched. The true and barycentric positions of the planets in Orbiter are relative to the position of the Sun, not the SSB, so the non-reporting of EPHEM_PARENTBARY would be correct. Sorry about the mix-up. So, if your planet module reports EPHEM_PARENTBARY, the expected...
Back
Top