Why UFO Sky Screenshots Are Not Enough

Introduction

A UFO sky reconstruction only becomes useful evidence when another investigator can reproduce the same result independently. A Stellarium screenshot on its own is not enough. The apparent position of Venus, the brightness of Jupiter, the visibility of satellites, the horizon line, atmospheric haze, star labels, field of view and even the software’s astronomical datasets can all change the final image. If those settings are not preserved alongside the screenshot, later investigators may generate a different sky and reach a different conclusion.

This matters directly in AI-assisted UFO sighting investigation workflows. Automated astronomy checks often rely on Stellarium or similar planetarium software to test whether a witness may have seen a planet, star, meteor, satellite or aircraft light. Years later, however, a saved PNG image without metadata becomes weak evidence. Repeatable reconstructions require preserved settings, version records, coordinates, time conversions and ephemeris information so that the same sky can be regenerated and audited properly. [Stellarium]stellarium.orgStellariumuser guideWe hope speech output in your language and your operating system is becoming usable. but there are factors which we… [Stellarium]stellarium.orgStellarium Astronomy SoftwareStellarium is a planetarium software that shows exactly what you see when you look up at the stars. It's eas…

Why UFO sky screenshots are not enough

Investigators regularly post annotated Stellarium images online to argue that a UFO was “clearly Venus” or “obviously a satellite”. The problem is that two Stellarium installations can display noticeably different skies depending on configuration and catalogue settings. Even experienced users have documented differences between Stellarium desktop and web versions, including different star visibility and database behaviour. [Cloudy Nights]cloudynights.comCloudy Nights Stellarium web vsdesktop: question on FOV limits and…August 25, 2020 — 25 Aug 2020 — For example, I can "zoom in" and resolve Albaldah into a double st…Published: August 25, 2020

A screenshot also hides critical context:

Without those details, the image becomes difficult to verify scientifically. A later reviewer cannot reliably distinguish between:

This becomes especially important in disputed cases where a proposed explanation depends on precise altitude near the horizon. A few degrees of visual change can determine whether Venus was still visible, whether the Moon had already set, or whether a Starlink pass matched the witness account.

Which Stellarium settings change the sky view

The strongest reproducible UFO case files treat Stellarium almost like laboratory software: the configuration itself becomes part of the evidence record.

Time and time-zone handling

Time handling creates some of the largest reconstruction errors. Stellarium can display local time, UTC and historical dates, but investigators frequently fail to record which mode they used.

A repeatable reconstruction should preserve:

• witness-reported local time,
• UTC conversion,
• daylight saving status,
• and uncertainty range.

For example, a report saying “around 10:15 pm” may realistically mean anywhere between 22:05 and 22:25. That uncertainty can radically change the apparent sky near the horizon.

Historical reconstructions also become sensitive to long-term ephemeris calculations. Stellarium relies on astronomical ephemerides, and accuracy can vary depending on the date range and underlying datasets being used. Researchers discussing Stellarium’s long-range astronomical modelling have noted that software versions and ephemeris choices affect precision over extended periods. [Sundials]sundials.euSundialsSun ephemeris comparisonAugust 30, 2016 — by G Casalegno — Resulting error is less than half arcsecond except for Stellarium (abo…Published: August 30, 2016

Observer location and elevation

Two screenshots may look identical while being generated from different coordinates. For UFO investigations, this matters because:

The reconstruction record should therefore include:

A moving witness creates an additional complication. A driver observing a “hovering UFO” from a motorway may actually be watching Venus appear stationary because of motion parallax. In such cases, a single fixed observer point may be misleading.

Atmospheric rendering settings

Stellarium includes adjustable atmospheric effects:

• extinction,
• light pollution,
• atmospheric refraction,
• haze,
• twinkling,
• and landscape brightness.

These settings can materially alter how bright or visible an object appears. Venus near the horizon may appear dramatically brighter with one atmospheric configuration than another.

For UFO analysis, the key point is not visual realism alone but reproducibility. If the witness described:

• “a bright orange object low in haze”
• or “a star that vanished into cloud”,

then atmospheric settings become evidentially important rather than cosmetic.

Field of view and zoom

A common online mistake is to present a Stellarium reconstruction at an unrealistic zoom level. A narrow telescope-style field of view can make ordinary planets appear unusually dramatic.

A repeatable record should therefore preserve:

Different Stellarium configurations can even load different star datasets and rendering limits, producing inconsistent results between systems. [Cloudy Nights]cloudynights.comCloudy Nights Stellarium web vsdesktop: question on FOV limits and…August 25, 2020 — 25 Aug 2020 — For example, I can "zoom in" and resolve Albaldah into a double st…Published: August 25, 2020

Sky cultures and overlays

Stellarium supports alternative sky cultures, constellation systems, grids and overlays. [Stellarium]stellarium.orgStellariumData Structures3 days ago — Store basic info about a sky culture for Stellarium. C… Manages loading, visibility, conflict re…

For UFO work, these overlays can unintentionally bias interpretation. An image cluttered with labels and constellation art may obscure what a witness actually saw with the naked eye.

The reconstruction record should therefore state:

Saving ephemeris tables with screenshots

The most durable UFO astronomy records pair screenshots with numerical data rather than relying on images alone.

An effective evidence package usually contains:

• the screenshot,
• the exact Stellarium version, [stellarium.org]stellarium.orgMar 26, 2023 — The Stellarium Team has released version 23.1. From now on, releases will have version numbers indicating a year.release s…
• configuration files,
• and exported positional data.

This matters because screenshots are visually persuasive but computationally weak. Numerical ephemeris records preserve:

• object altitude,
• azimuth,
• rise/set times,
• illumination,
• angular separation,
• and apparent magnitude.

If a future software version changes rendering behaviour, the underlying astronomical data can still be checked independently against external sources such as JPL Horizons or official astronomical almanacs. [Wikipedia]WikipediaJet Propulsion Laboratory Development EphemerisJet Propulsion Laboratory Development Ephemeris

For UFO investigations, a saved ephemeris table is often more valuable than a dramatic image because it allows:

• independent recalculation,
• machine comparison,
• and automated cross-checking against witness timelines.

AI-assisted workflows benefit particularly from structured exports because they can be compared programmatically against:

• satellite databases,
• aircraft tracks,
• astronomical catalogues,
• and historical sightings.

A screenshot alone cannot support that kind of automated verification.

Preserving Stellarium configuration files

One of the simplest ways to preserve reproducibility is to archive Stellarium’s configuration files alongside the case record.

Stellarium stores user settings in configuration files such as config.ini, along with plugin and module data. Users and developers have documented how these files preserve location data, rendering preferences and module settings. [SourceForge]sourceforge.netSourceForgeStellarium / Discussion / Feedback: config.ini changes don't…Mar 30, 2006 — The configuration file is in the \program files… [Cloudy]cloudynights.comCloudy Nights Stellarium web vsdesktop: question on FOV limits and…August 25, 2020 — 25 Aug 2020 — For example, I can "zoom in" and resolve Albaldah into a double st…Published: August 25, 2020

A preserved UFO reconstruction archive should ideally include:

• the screenshot,
• the config.ini file, [sourceforge.net]sourceforge.netSourceForgeStellarium / Discussion / Feedback: config.ini changes don't…Mar 30, 2006 — The configuration file is in the \program files…
• custom landscape files,
• plugin configuration files, [sourceforge.net]sourceforge.netSourceForgeStellarium / Discussion / Feedback: config.ini changes don't…Mar 30, 2006 — The configuration file is in the \program files…
• and notes describing any manual adjustments.

This allows another investigator to recreate nearly the same viewing environment later.

The practical value becomes obvious when revisiting older UFO cases. A reconstruction made in 2026 may not behave identically in 2035 if:

• Stellarium changes rendering engines, [sourceforge.net]sourceforge.netSourceForgeStellarium / Discussion / Feedback: config.ini changes don't…Mar 30, 2006 — The configuration file is in the \program files…
• default star catalogues evolve,
• plugin behaviour changes,
• or ephemeris handling is updated.

Stellarium release notes regularly document changes to internal behaviour, scripting and user data handling. [Stellarium]stellarium.orgStellarium: Data StructuresStore basic info about a sky culture for Stellarium. CStelSkyCultureMgr, Manage sky cultures for stellarium. C… [Stellarium]stellarium.orgStellariumStellarium v0.19.0 has been released!Mar 24, 2019 — Added allow setting location of User Data Dir via environment variable. Add…

A preserved configuration snapshot therefore acts as a historical record of the analytical environment itself.

Keeping old reconstructions reproducible years later

Long-running UFO archives face a problem familiar to digital forensics and scientific computing: software drift.

An investigator reopening a ten-year-old case may discover:

• missing plugins,
• incompatible landscape files,
• updated astronomical datasets,
• or altered default rendering behaviour.

For this reason, robust UFO archives increasingly treat Stellarium environments as versioned evidence packages rather than disposable visual aids.

A durable archive normally preserves:

• Stellarium version number, [stellarium.org]stellarium.orgMar 26, 2023 — The Stellarium Team has released version 23.1. From now on, releases will have version numbers indicating a year.release s…
• operating system,
• user configuration folder, [sourceforge.net]sourceforge.netSourceForgeStellarium / Discussion / Feedback: config.ini changes don't…Mar 30, 2006 — The configuration file is in the \program files…
• plugin list,
• screenshot exports,
• and structured observation notes.

Some investigators also preserve:

• installation packages,
• portable versions of Stellarium,
• or virtual machine snapshots.

That level of preservation may sound excessive for a casual sighting report, but it becomes important in high-profile or disputed cases where astronomy explanations are central to the debate.

Why reproducibility changes the credibility of a UFO analysis

A reproducible reconstruction does not prove that a UFO was extraordinary. In many cases, the reconstruction instead strengthens ordinary explanations by demonstrating that:

• Venus matched the witness direction precisely,
• Jupiter was unusually bright,
• a satellite flare crossed the reported path,
• or the Moon appeared distorted near the horizon.

But the same standard also protects against weak debunking. If a sceptical explanation cannot be reproduced under preserved settings, its confidence should remain limited.

That distinction matters in balanced UFO investigation work. The goal is not to force either a mysterious or mundane conclusion. The goal is to preserve enough evidence that later investigators can test the claim properly instead of arguing over an unrepeatable screenshot.

Endnotes

1. Source: stellarium.org
   Link: https://stellarium.org/guide/
   Source snippet

   Stellariumuser guideWe hope speech output in your language and your operating system is becoming usable. but there are factors which we...

2. Source: stellarium.org
   Link: https://stellarium.org/
   Source snippet

   Stellarium Astronomy SoftwareStellarium is a planetarium software that shows exactly what you see when you look up at the stars. It's eas...

3. Source: sundials.eu
   Link: https://www.sundials.eu/download/Comparison%20of%20sun%20ephemeris.pdf
   Source snippet

   SundialsSun ephemeris comparisonAugust 30, 2016 — by G Casalegno — Resulting error is less than half arcsecond except for Stellarium (abo...

   Published: August 30, 2016

4. Source: youtube.com
   Link: https://www.youtube.com/watch?v=JZ–fq8FvrM
   Source snippet

   Stellarium Long-Time High Accuracy InstallationStellarium is a powerful tool, but you have to know its limits and how far back it can dis...

5. Source: Wikipedia
   Title: Jet Propulsion Laboratory Development Ephemeris
   Link: https://en.wikipedia.org/wiki/Jet_Propulsion_Laboratory_Development_Ephemeris

6. Source: stellarium.org
   Link: https://stellarium.org/doc/26.0/annotated.html
   Source snippet

   StellariumData Structures3 days ago — Store basic info about a sky culture for Stellarium. C... Manages loading, visibility, conflict re...

7. Source: stellarium.org
   Link: https://stellarium.org/doc/head/annotated.html
   Source snippet

   Stellarium: Data StructuresStore basic info about a sky culture for Stellarium. CStelSkyCultureMgr, Manage sky cultures for stellarium. C...

8. Source: sourceforge.net
   Link: https://sourceforge.net/p/stellarium/discussion/278769/thread/0ceba418/
   Source snippet

   SourceForgeStellarium / Discussion / Feedback: config.ini changes don't...Mar 30, 2006 — The configuration file is in the \program files...

9. Source: sourceforge.net
   Link: https://sourceforge.net/p/stellarium/discussion/278769/thread/bc040652/
   Source snippet

   This contains all the changes you have made to your configuration. Copy this to the same part of the user...

10. Source: stellarium.org
    Link: https://stellarium.org/release/2019/03/24/stellarium-0.19.0.html
    Source snippet

    StellariumStellarium v0.19.0 has been released!Mar 24, 2019 — Added allow setting location of User Data Dir via environment variable. Add...

11. Source: stellarium.org
    Link: https://stellarium.org/release/2023/03/26/stellarium-23.1.html
    Source snippet

    Mar 26, 2023 — The Stellarium Team has released version 23.1. From now on, releases will have version numbers indicating a year.release s...

12. Source: stellarium.org
    Link: https://stellarium.org/release/2025/03/23/stellarium-25.1.html
    Source snippet

    Mar 23, 2025 — Glad to announce the release of Stellarium 25.1 for all platforms. This is our first release in 2025 with exciting feature...

13. Source: stellarium.org
    Link: https://stellarium.org/files/guide.pdf
    Source snippet

    n License, Version 1.3 or...

14. Source: stellarium.org
    Link: https://stellarium.org/fa/scripts.html
    Source snippet

    Stellarium ScriptsTo install a script copy the script file (.ssc extension), and any texture files it uses to the scripts sub-directory o...

15. Source: stellarium.org
    Link: https://stellarium.org/scripts.html
    Source snippet

    Stellarium ScriptsTo install a script copy the script file (.ssc extension), and any texture files it uses to the scripts sub-directory o...

16. Source: stellarium.org
    Link: https://stellarium.org/eu/scripts.html
    Source snippet

    Stellarium ScriptsTo install a script copy the script file (.ssc extension), and any texture files it uses to the scripts sub-directory o...

17. Source: stellarium.org
    Link: https://stellarium.org/doc/0.18/annotated.html

18. Source: youtube.com
    Link: https://www.youtube.com/watch?v=QUX13lA1Dbg
    Source snippet

    satellite, planet, or star, stellarium will let you know...

19. Source: youtube.com
    Title: Your Own Landscape in Stellarium
    Link: http://www.youtube.com/watch?v=ZmJ9m9fMVAk
    Source snippet

    Stellarium with Sky Surveys: Astrophotography Game-Changer...

20. Source: youtube.com
    Title: Stellarium with Sky Surveys: Astrophotography Game-Changer!
    Link: http://www.youtube.com/watch?v=5ddQDw-COX4
    Source snippet

    Using Stellarium to Explore the Sky...

21. Source: youtube.com
    Title: CCD Guide
    Link: http://www.youtube.com/watch?v=aI9RvJr0z_Y
    Source snippet

    Stellarium celestial navigation...

22. Source: youtube.com
    Title: Stellarium celestial navigation
    Link: http://www.youtube.com/watch?v=Ea2ZKuGf-hE
    Source snippet

    CCD Guide - Video Tutorial #1 Introduction & Highlights Herbert Walter · 532 views...

23. Source: cloudynights.com
    Title: Cloudy Nights Stellarium web vs
    Link: https://www.cloudynights.com/forums/topic/725586-stellarium-web-vs-desktop-question-on-fov-limits-and-other-differences/
    Source snippet

    desktop: question on FOV limits and...August 25, 2020 — 25 Aug 2020 — For example, I can "zoom in" and resolve Albaldah into a double st...

    Published: August 25, 2020

24. Source: cloudynights.com
    Title: 614920 stellarium default configini
    Link: https://www.cloudynights.com/forums/topic/614920-stellarium-default_configini/
    Source snippet

    Stellarium Default_Config.ini17 Apr 2018 — All settings are saved in config.ini. If you want to change config.ini with a text editor, mak...

25. Source: cloudynights.com
    Link: https://www.cloudynights.com/forums/topic/846473-moving-stellarium-ocular-data-from-one-computer-to-another/
    Source snippet

    Moving Stellarium ocular data from one computer to another.Oct 18, 2022 — The location of that file in windows is.."User"\AppData\Roami...

26. Source: irejournals.com
    Title: Stellarium etc when it coincides with Gregorian.Read more
    Link: https://www.irejournals.com/formatedpaper/1703251.pdf
    Source snippet

    Study Of Astronomy Software and Error in EphemerisThere is an error in The JPL Ephemeris and mostly the astronomical software like Voyage...

27. Source: scribd.com
    Link: https://www.scribd.com/document/236788592/Stellarium-User-Guide-new
    Source snippet

    full-screen yes or no Over-rides the full screen setting in the cong le. --...Read more...

28. Source: visionvideo.com
    Title: Stellarium user guide
    Link: https://www.visionvideo.com/files/Stellarium_user_guide.pdf?srsltid=AfmBOoqP5GizXUNOHLEk4OEYewWOONKmkGsTdTPl9RKFilyg_5sb3giV
    Source snippet

    Save the current settings to the main configuration file. 8.3. Shutdown. Quit Stellarium. 8.4. Update me...Read more...

29. Source: dokumen.pub
    Link: https://dokumen.pub/stellarium-241-user-guide-1-1-24nbsped.html
    Source snippet

    capes As of version 0.15, the available landscape...Read more...

30. Source: noctua-software.com
    Link: https://noctua-software.com/static/stellarium-mobile/Stellarium_Mobile_Quick_Start.pdf
    Source snippet

    Stellarium MobileStellarium Mobile is a planetarium application for Android and iOS. It shows a realistic sky in. 3D, just like what you...

Additional References

1. Source: github.com
   Link: https://github.com/Stellarium/stellarium/wiki/FAQ
   Source snippet

   FAQ · Stellarium/stellarium WikiIs there a User's Guide to Stellarium? I... The installer program allows you to reset settings and delet...

2. Source: science.gov
   Link: https://www.science.gov/topicpages/a/astronomical%2Bphenomena.html
   Source snippet

   adopting the values of an alien system, astronomers risk...Read more...

3. Source: facebook.com
   Link: https://www.facebook.com/groups/1295673443855365/posts/9430320323723929/
   Source snippet

   o prove the earth is flat. **Edited** because even educated people...

4. Source: socastrosci.org
   Title: 2024 Proceedings Ver1.3c
   Link: https://socastrosci.org/wp-content/uploads/2024/06/2024-Proceedings_Ver1.3c.pdf
   Source snippet

   SAS-2024 The Symposium on Telescope Science20 Jun 2024 — aliens might be using to communicate with us, amateur searches looking for signa...

5. Source: sophia-project.net
   Title: SEAC 2016 Abstracts Book
   Link: https://sophia-project.net/sp_sponsored/seac2016/_images/SEAC_2016_Abstracts_Book.pdf
   Source snippet

   European Society for Astronomy in Culture13 Sept 2016 — Australian aboriginal art, Renaissance iconography, UFOs, magic and divination, m...

6. Source: arxiv.org
   Title: arXiv The Simulated Sky: Stellarium for Cultural Astronomy Research
   Link: https://arxiv.org/abs/2104.01019

7. Source: youtube.com
   Title: Using Stellarium to Explore the Sky
   Link: http://www.youtube.com/watch?v=x9cSpKieSkQ
   Source snippet

   CCD Guide - Video Tutorial #1 Introduction & Highlights...

8. Source: youtube.com
   Link: https://www.youtube.com/watch?v=wW1wqDMlVto
   Source snippet

   Adding High-Accuracy & Long-Term Ephemerides to StellariumDid you know that you can have data from 13000 B.C. to 17000 C.E. in Stellarium...

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