Activity for gzotti
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gzotti posted a review on Hugin
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Stellarium as an astronomy program has no support for gematria. It supports Julian day numbers and the conventional Gregorian calendar for the present time and (with the new Calendars plugin) several other calendars. To count days, use the Julian Day interface, it avoids different month lengths or leap years. This forum is no longer anonymous. We had too much spam.
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Not sure about labels. You can also place a little icon as SkyImage. But I must read the docs like you.
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We have ideas to recreate just this: desaturated DSO views. The Milky Way can already be desaturated.
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Are you in the Southern hemisphere on a location with daylight saving time? How should we know? If you set location and timezone (F6 panel), the simulation should be accurate.
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Maybe you should give translators this hint: TRANSLATORS: Rawdah: a short time of vegetation in the desert after rainfall. Some other languages do have a particular word for this. German: Wüstenblüte. In English I see "spring flowers" https://en.wikipedia.org/wiki/Namaqua_National_Park Maybe "The desert spring flowers and the goats" ? (If "spring" is the season. Or just "desert flowers")
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I think I have seen exactly such discussion (Arduino too limited for on-board sidereal time computation) in some other forum (or even here...). There must be tens of Arduino guiding projects discussed online.
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The User Guide, section 15.2.1: Abilities and limitations This plug-in allows Stellarium to send ’slew’ (’go to’) commands to the device and to receive its current position. There are some scopes which additionally support ’sync’ commands to be received in order to update the internal pointing model of the mount. Some scopes also have the ability to abort a previous slew command. However, users should always be aware of the possibility for mount collisions and similar situations. You should always...
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Alexander, there is the Greek story of the Lyra made from a turtle. See also our existing "arabic" skyculture. In terms of images taken from the Sufi manuscript, this is OK.
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Ah, this makes it very interesting then as a "single" skyculture with an actual focus on as-Sufi. (one particular author/book snapshot). Indeed, the current "arabic" is a Ptolemy/Sufi SC.
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Hi! Basically, you would make a private fork of Stellarium from github, add your files, and send a "pull request" to us. But... you have already made one based on as-Sufi (arabic). What have you changed? Is this a replacement, or a new one? Kind regards, Georg
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Did you follow instructions from the APT manual that instructs you to activate and launch the RemoteControl plugin in Stellarium?
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Strange. For reference, Stellarium has around 8% on my Core i7 notebook which is a generation older than your system.
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Did you set minimum_fps or maximum_fps too high? When it is just simulating current sky, frame rate can be limited with this. See Appendix D.1.24 in the User Guide.
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Loaded 107 Solar System bodies... this is harmless. But indeed, satellites? Or indeed a conflict with any other applications? OP says his Windows (i.e. other applications) becomes slow, this sounds indeed weird. Is it only Stellarium or any other (e.g. graphics or even Qt based?) applications? Kajaji, do you have another PC system to try to reproduce?
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Does this also happen with the current V0.20.4? Does this happen with older versions? Did you try to reset to defaults by renaming config.ini? The logfile looks unsuspicious, and I cannot reproduce this.
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ASCOM support was added in version 0.19.3, released more than a year ago. It appears to work for most users, but some still report issues. Always use the latest version, like 0.20.4 currently.
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Please limit your expectations to a few thousand years. With the extra DE431 file you can go back with the planet positions to -13000 with some confidence. Earth/Sun/Stars with some considerations of seasonal cycles may bring you back a few tens of thousands years, approximately, but e.g. the moon will show a polar orbit around -75000, which is just an extrapolation artifact. Appendix F in the User Guide is essential info for you.
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You ask the MarkerMgr for deletion, but draw with the CustomObjectMgr.
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You can rename your config.ini (see chapter 5 in the User Guide for its location) to force a reset. If that does not help, rename the "modules" directory in your user data directory (see ch. 5 again) to force new defaults for telescope/ocular/satellites/.... Then, if it runs, piecewise restore your settings by copying back directories from the saved to the newly created modules folder, and try after each copying of a subfolder to identify the culprit.
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The second sentence of section 14.2 reads: The other button with circular enclosure and tool icon (or Ctrl + + W ) opens the settings dialog.
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Yes. Please see the User Guide for operating instructions.
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As I wrote earlier: Sorry, I cannot help more, I have no such devices (and no time :-( I have understood StellariumScope did something weird to the configuration files, so you should work with a clean user data directory. (Or at least clean modules/TelescopeControl and fresh config.ini. Store them elsewhere for the moment. (The location is in the User Guide, chapter 5.) I would try it (as it does not cost a thing) and when it fails, revert. You will probably not need the latest changes in skycultures...
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Central Europe. A bit too far for a quick lunch stop-over :-)
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Thanks. I am afraid, not anytime soon, though...
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First contact (I think) in 2007/8, co-developing since 2010 or so. But I still don't know all of its code, mostly those portions which I added, repaired, or are otherwise of interest to myself. We also owe a lot (esp: star catalog, look&feel, principal architecture) to the first team.
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Did I say "change radius"? It is ten MAGNITUDES dimmer than Ceres. Set absolute_magnitude to -15 or -20 or whatever you want. And set absolute magnitude of Ceres to -5 to force the circle or even make them (hypothetical) naked eye objects in wide-angle views.
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Systematic search with big instruments and highly sensitive CCDs. Wikipedia has the story. Patrol telescope programmes regularly find new stuff.
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Note that Eris is more than 10 magnitudes, or ten thousand times, fainter than Ceres. That's why.
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Just edit ssystem_minor.ini and make Eris as bright as you want.
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It is deliberately hidden as long as you don't zoom in because it is much too faint to be seen without a pretty large telescope. There is no way for you to change that.
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Please see section 12.7 in the User Guide.
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In JavaScript this should translate to (untested) MarkerMgr.markerEquatorial("5h10m31s", "25d30m30s", true, true, "cross", "#ffff66", 6, false, 0); Please read the introductory chapter on Scripting in the User Guide and scripting intro at https://stellarium.org/doc/0.20/scripting.html
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Markers are temporary objects not intended to be saved. If you have a list of objects to display, you should be able to draw them in scripts with the functions described here: https://stellarium.org/doc/0.20/classMarkerMgr.html
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No. You can influence visible size of stars "relative" and "absolute" scaling, and replace the round texture with the spiky star texture. You could edit your own spiky star texture and play with that, but they load at startup.
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At least partially. You are referring to what we should call "sensor view", the rectangular box provided by a sensor. Once you have worked out your field of view, you can set the regular Stellarium screen FOV: StelMovementMgr.setFov(2.5687); // set vertical fov to 2.5687 degrees Configure a custom screenshot size with the same aspect ratio as your camera has, and make a screenshot without sensor view. This works for landscape oriented cameras, but not for arbitrary rotated ones.
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Please try it. As said, I cannot.
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IIRC Schaefer includes an estimate for the influence of Solar activity with an 11-year cycle, and a seasonal component.
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Most people go the other way: plan the exposure with the sensor frame in the Oculars plugin. See User Guide, section 15.1. Configure your instrument data and search for a star in the centre.
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I see not much proper motion between those stars; both move parallel relative to their surrounding. Have you actually tried to see what precession does to the orientation of the bear stars in relation to the equatorial coordinate grid of date? Stellarium provides all possibilities to track that. Maybe it helps understanding that piece. And yes, compare to other software. If all agree, they are either all wrong or it may also be an indicator of general correctness.
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I have heard about the title, and can apply a search engine to find it. Sure. But how can we verify long-term accuracy in a closed-source program? Against which qualified reference? And note that not WE chose the comparable programs, but the authors of that paper. Maybe they discuss their selection criteria. It is not my aim to compare with other software, just to compare to the best published references. If you prefer to use Voyager, or if it is better suited for your purpose, please do so. Every...
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By the way, is there any Particular reason for De Lorenzis and Orfino not including Voyager in their evaluation list? You must ask them, not us. I don't know this program. Regarding star data, this part of the project is largely legacy from the first team of developers. Start with ZoneData, ZoneArray, Star, StarWrapper and StarMgr, and with the User Guide, Appendix C. I cannot answer more detailed questions yet. For your research question, I would look into other programs which seem to have more...
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If you can provide measurements from 5500BC it would be easy to answer. Do you have a practical application/research question for this period? Precession is modelled very well, but as we keep stating in the User Guide, Appendix F.2, Stellarium has a simplified model of proper motion. This may lead to occasional small errors. The process of computation is publicly visible in Stellarium's source code.
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https://github.com/Stellarium/stellarium/issues/1477. Case closed.
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https://stellarium.org/doc/0.20/classStelMainScriptAPI.html#aebaa4b5ef785df2227317844e95279d7 points you to a way to print the whole map: map=core.getSelectedObjectInfo(); core.output(core.mapToString(map)); There is currently no other name in the map. I have filed a feature request here: https://github.com/Stellarium/stellarium/issues/1477
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I unearthed our Oculus Rift DK1, however there is no more devkit available, so I won't be able to make any more use of it in new projects. (Some old demos and presentations still run, but this means it's e-trash after really too little time.) A colleague pointed me at OpenXR, however the Oculus Rift DK1 is also not supported, so my interest and chances for a "quick look" is freezing again. I am sure there are other developers out there burning to make a plugin that would work for several headset...
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Thanks. Expect PM... :-)
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Ah, thanks. I agree there are some typos/unclear differences/bugs between the 1993 and other of his works, and also oversimplification in the BASIC programs in S&T, and therefore also this part of the program deserves a thorough review. I have added a few comments when I first went through years ago, but other tasks were more important first.
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Most relevant may be this: @Article{Schaefer:Limits, author = {Bradley E. Schaefer}, title = {{Astronomy and the Limits of Vision}}, journal = {Vistas in Astronomy}, year = {1993}, volume = {36}, pages = {311--361} } See the SkyBright class for more.
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(I gave the mas quote as example of typical confirmations in modern references which don't concentrate on prehistorical applications. There is no guarantee here.) If both programs agree, they may use the same models. I sincerely hope to have the telescopic era matched in high enough accuracy to replay historical records, and to provide a credible appearance of the Moon for all practical purposes before that, say, for positive JD. Give or take a millennium :-)
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How do you know it's not correct? :-) Sure, numerical 12 degrees sounds a bit far. Still the visual naked-eye appearance is not too terrible even much earlier. I have not seen valid range data in the reports. You may get an asserting "deviates no more than ... milliarcseconds in 1950...2100". But nothing about quality for even centuries in the past.
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If you have reference data for the 2nd millennium BC (or 1000AD, or whatever you want to check) where the Lunar axis pointed to, you can place yourself on the Moon, switch on "Equatorial coordinates of date"(which shows a planet-aligned celestial grid), and check the position of the Celestial North Pole in J2000 equatorial coordinates. I don't have such reference data.
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I have implemented the Lunar rotation model given in the WGCCRE2009 publication. You can see it looks not too bad even in the 18th millennium BC, but at some point it will also show nonsense and rotate Mare Crisium behind the western rim. If I knew the limits, I would write them in the Guide. For now I am happy that it is at least "much better" than before. My question to you is, what defines "valid" for you? Credible naked-eye views, or a few arcminutes of axial deviation? And where would we get...
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There is F1 (Help), a User Guide, or the forum... Press F11.
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When I zoom into the star annotated at dead center, it says 96 Aqr, just like my own image shows above. Neptune is further right, unlabeled.
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Neptune is not the star you pointed out...
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I just saw I inadvertently left a slight focal reducer in the simulation. Have you actually measured your focal length or is it just what's on the label?
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You are misinterpreting the display. Try to hone your identification skills ;-)
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Yes, this is also what I am seeing. Ambitious developers with the intent to do something out of the Oculus, with an Oculus on their desk, and experience with Oculus developing, should be able to make use of whatever was donated to us from a stopped project. I fully agree that documentation would be an essential step to a generally working system, but we have nothing here as well.
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You must build Stellarium from sources and enable building this plugin. Having no such device, unfortunately I cannot give any further advice. If you google for oculus stellarium, you will find several projects about which we know nothing. It would be nice to have one solid working plugin that works with all versions of Oculus (also the early DK1), and somebody who could write a chapter for the guide on actual building and usage scenarios. However, esp. in times of a pandemic, I would not invite...
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Please flip over 4 pages to section 7.1.7.
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The Stellarium User Guide answers this.
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Please read Stellarium User Guide Appendix F.8 to understand the problem. Then update to Stellarium 0.20.4 and read section 13.10.
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https://github.com/Stellarium/stellarium/wiki/Common-Problems-for-the-current-version#menu-invisible-windows
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If the object is too dim it will not be displayed. In early September 2017 it was bright enough to be rendered as little dot. look for orbit_good in the User Guide. Section D.2.2. Comet tails are only shown for objects described as comets (See the same page), and then only if they are active. The new class of Interstellar objects is currently not rendered as comet.
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1) ssystem.ini has been split into ssystem_major.ini (not user editable) and ssystem_minor.ini (user-editable in user data area) several years ago, so whatever file you are editing under this name it is not loaded in V0.16+. 2) look for orbit_good in the User Guide and check whether the object is simply hidden for reasons of outdated trajectory data.
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yes
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The Oculars plugin provides simulation for views through monocular telescopes and related optical systems with fixed focal lengths. It has a special section to simulate sensor frames. If you open the Stellarium User Guide, you could read some application notes. Can you compute aperture when "aperture = f/3.5" and f=28mm? "Lens" is an intermediate element like a focal extender or reducer. You don't need it, leave factor 1. As you write, a camera has no eyepiece. Just leave the defaults, you don't...
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Yes. When you compute positions of solar system bodies, light time makes a difference. Indeed, the finite speed of light was detected by careful observation of Jupiter's moons. https://en.wikipedia.org/wiki/Ole_R%C3%B8mer Just toggle the light time correction switch in Stellarium to see the difference. It may just be interesting to know such details. E.g., a message of a spacecraft on Mars will need so-and-so many minutes to reach ground control on Earth, and a control signal from Earth will also...
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https://github.com/Stellarium/stellarium/wiki/FAQ#can-i-use-stellarium-screenshots-in-my-bookwebsitecalendar-etc
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People wanted to see the lunar phase without halo with wide FOV. You switched off halo and see correctly sized tiny phase image now. Just enlarge the moon with the existing switch.
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Ah, FOV...
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What is CDV?
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When I click on the moon, it is marked as usual. What do you mean?
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If you are on Windows, look into the Stellarium Program group in your Start menu (press the Windows icon to open the Start menu). If you are not on Windows, download the Stellarium User Guide from https://stellarium.org. Find the "User Guide" icon in the top right corner, next to the other download buttons. There are dozens of third-party websites and video guides about using Stellarium. There is one official User Guide. Do NOT buy it from Amazon. These are outdated versions from rogue publisher...
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Please read the introductory chapters of the User Guide. We have written it for you.
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Click on it and read values?
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The Stellarium User Guide 0.20.3 says: This plug-in allows Stellarium to send ’slew’ (’go to’) commands to the device and to receive its current position. There are some scopes which additionally support ’sync’ commands to be received in order to update the internal pointing model of the mount. Some scopes also have the ability to abort a previous slew command. However, users should always be aware of the possibility for mount collisions and similar situations. You should always make sure that a...
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As we have stated in the release notes for 0.20.3: YES.
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setObserverLocation sets your location but does not change where you look into the sky. core.moveToObject() or similar may help to bring a constellation into center. But that conflicts with lookEast(). Not clear what you want to achieve.
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One last try to progress: How far did you get, and at which step you see yourself in trouble?
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You could indicate at which step you run into problems. Else our instructions will always be "for those who know already what to do".
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Not sure what your problem is? 1) From the section "Installing these packages" copy and paste the given command line for Debian/Ubuntu which starts with sudo apt install ... 2) From the section "Getting the source code", either follow instructions to download ZIP or tarball, or follow instructions to clone the git, whichever you prefer. Certainly not rocket science, but yes, familiarity with the command line assumed. 3) From the section "Building", follow the instructions under "On Linux". (Just...
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Umlaufbahnen sind annähernd kreisförmige heliozentrische Ellipsen. Spuren sind beobachterzentrierte Bahnen, die sich aus Erd- und Planetenbewegung ergeben.
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Define a marker and center on that.
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In ocular view you need a target on which to center. Just select another star in the ocular circle to retarget.
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This has been known for years.
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Format output as CSV and import that to Excel.
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Can you ask a more comprehensible question? And can you continue your earlier thread instead of opening a new one? I am pretty sure there are also websites which provide the table of values you need.
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Just set a custom marker, then select it.
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The answer more than nine years after the last message in this thread, in 2020, is: read the fantastic manual and find section 4.3.5, or look around in the menu options.
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I repeat: Please answer my question. What defines the equinox date? (Hint: Victor told you.)
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Please answer my question.
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What is the date of autumnal equinox in 1582, and in 1583, according to your study?
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The so far most complete description is in Georg Zotti. Visualising skyscapes: GIS-based 3-D modelling and astronomical simulation. In Liz Henty and Daniel Brown, editors, Visualising Skyscapes: Material Forms of Cultural Engagement with the Heavens, Routledge Studies in Archaeology, pages 35–54. Routledge, 2019.
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