Catalogue
One sheet per product. Each CaeloWorks creation follows an engineering approach: specifications, measurements, iterations under real skies
DocStellar
Astrophoto defect diagnosis by the Doc
Web tool for AI-powered astrophoto image diagnosis. Upload a raw, master or processed frame (JPG, PNG, FITS, XISF); in under a minute, DocStellar returns an annotated analysis detecting up to 42 defects (optical, mechanical, electronic), with likely causes and corrective leads.
Designed for three audiences: the beginner looking for a reliable verdict, the experienced astrophotographer seeking a second opinion, and anyone building expertise in deep-sky defect identification.
- Accepted formats
- JPG, PNG, FITS, XISF
- Analysis time
- ≤ 1 minute
- Detected defects
- Up to 42 types
- Domains covered
- Optical · Mechanical · Electronic
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Which image formats does DocStellar accept?
DocStellar accepts JPG, PNG, FITS and XISF formats, whether the image is a raw frame, a master or an intermediate processing step.
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How many defects can DocStellar detect?
Up to 42 optical, mechanical and electronic defects per image, each one paired with likely causes and corrective leads.
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How long does an analysis take?
The annotated report is returned in under a minute, regardless of the input image format.
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Does DocStellar work on raw or processed images?
Both. DocStellar interprets raw FITS frames straight from the acquisition chain as well as stacked masters or intermediate processing outputs.
WinStellar
FITS & XISF viewer for Windows
WinStellar makes FITS and XISF files finally readable by Windows Explorer. Thumbnails for raws and masters in every folder, FITS headers exposed as sortable columns (date, exposure, gain, filter, binning), and a built-in preview pane to inspect an image in one click.
Like a JPG, but for astronomy. Direct download, native integration, no dependencies.
- System
- Windows 10 and 11
- Supported formats
- FITS, XISF
- Integration
- Native Explorer
- Distribution
- Direct download
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Which operating systems does WinStellar run on?
WinStellar runs natively on Windows 10 and Windows 11, with no external dependency.
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Which astrophoto formats are supported?
WinStellar adds Windows Explorer support for FITS (Flexible Image Transport System) and XISF (PixInsight's Extensible Image Serialization Format) files.
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Does WinStellar require a processing application?
No. WinStellar integrates directly into Windows Explorer to provide thumbnails, sortable FITS headers and a preview pane, without installing any third-party software.
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How can I download WinStellar?
WinStellar is distributed as a direct download from its official website winstellar.fr.
P-03
NINA Plugins
N.I.N.A. plugins catalogue by CaeloWorks
Catalogue of N.I.N.A. (Nighttime Imaging 'N' Astronomy) plugins by CaeloWorks to automate, measure and harden your astrophoto nights. Plugins are sober, documented in French and English, open-source.
First titles available: Benchmark (measures how fast your rig runs N.I.N.A.'s real image-analysis pipeline) and Home Assistant (drive and read your Home Assistant instance from N.I.N.A.). More plugins will follow.
- Platform
- N.I.N.A. (Windows)
- Available plugins
- Benchmark · Home Assistant
- Distribution
- N.I.N.A. plugin manager
- Licence
- Open-source (MPL-2.0)
- Catalogue
- nina-plugins.caelo.works
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Which N.I.N.A. plugins does CaeloWorks publish?
Two plugins are available: Benchmark, which measures how fast your rig runs N.I.N.A.'s real image-analysis pipeline, and Home Assistant, which lets you drive and read a Home Assistant instance from inside N.I.N.A. More plugins will follow.
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How do I install a CaeloWorks N.I.N.A. plugin?
Installation happens from inside the N.I.N.A. plugin manager (Plugins menu), in just a couple of clicks. If a plugin is not yet listed there, a manual DLL installation procedure is documented on its dedicated page.
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Are the plugins open-source?
Yes. All CaeloWorks N.I.N.A. plugins are open-source under the MPL-2.0 licence, with public source code on GitHub (caelo-works organisation).
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Where can I find the full catalogue and documentation?
The full catalogue, the FR/EN documentation and the release notes are published on nina-plugins.caelo.works, with a dedicated page per plugin.
P-04
PixInsight Scripts
PixInsight scripts catalogue by CaeloWorks
Catalogue of PixInsight scripts by CaeloWorks to distribute compute, measure and harden your processing pipeline. Scripts are sober, documented in French and English, open-source under the GPLv3 licence.
Four scripts published. Dark Frame Analyzer runs robust statistics over a dark frame series and flags every frame as valid, suspect or reject before stacking. Distributed WBPP spreads PixInsight's WBPP across several machines on your local network. Sky Intruders identifies the satellites, meteors and asteroids that crossed your raw frames, and reveals the galaxies, quasars and planetary nebulae captured along the way. Session Cinema turns a stacking session into a video, zooming from the whole sky down to your image.
YAGEx, a sky background gradient removal module, is in the works. Install through the PixInsight update repository, or manually.
- Platform
- PixInsight (Windows, macOS, Linux)
- Requirements
- PixInsight 1.9+ (1.9.4+ depending on the script)
- Published scripts
- Dark Frame Analyzer · Distributed WBPP · Sky Intruders · Session Cinema
- In the works
- YAGEx (gradient removal)
- Distribution
- PixInsight update repository
- Licence
- Open-source (GPLv3)
- Catalogue
- pixinsight-scripts.caelo.works
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Which PixInsight scripts does CaeloWorks publish?
Four scripts are published. Dark Frame Analyzer runs robust statistics over a dark frame series and flags every frame as valid, suspect or reject before stacking. Distributed WBPP spreads PixInsight's WBPP across several machines on your local network. Sky Intruders identifies the satellites, meteors and asteroids that crossed your raw frames, and reveals the galaxies, quasars and planetary nebulae captured along the way. Session Cinema turns a stacking session into a video. A fifth one, YAGEx (sky background gradient removal), is in the works.
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How do I install a CaeloWorks PixInsight script?
Add the CaeloWorks update repository (https://pixinsight-scripts.caelo.works/update/) in PixInsight, through Resources → Updates → Manage Repositories, then run Check for Updates and restart PixInsight. Every script can also be installed manually: download its file and add its folder through Script → Feature Scripts.
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Are the scripts open-source?
Yes. CaeloWorks PixInsight scripts are open-source under the GPLv3 licence, with public source code on GitHub (caelo-works organisation).
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Where can I find the catalogue and documentation?
The catalogue, the FR/EN documentation and release notes are published on pixinsight-scripts.caelo.works, with a dedicated page per script.
CaeloTargets
What should I shoot tonight?
The question that opens every night: what should I shoot tonight? CaeloTargets answers it for your setup. It scores the deep-sky targets visible tonight from your location out of 100, and drops the ones that are not worth attempting.
A conjunctive score, not a weighted average. Four factors multiply together: framing (how the object sits in your field of view, the heaviest weight), visibility (time spent high enough against the available night), surface brightness and structure. The Moon and sky quality then apply as multipliers. One factor at the floor is enough to disqualify a target, and that is the point: an object that overflows your sensor cannot make up for it elsewhere.
Your actual constraints. Field of view is entered as focal length plus sensor, or straight in degrees. The horizon is drawn sector by sector (12 or 24 azimuths) to account for the neighbour's roof and the trees, with "City garden" and "Balcony" presets. Bortle is derived from light pollution data for your position and stays adjustable from 1 to 9. CaeloTargets also finds each night's moonless window.
The night plan exports as an N.I.N.A. advanced sequence: coordinates, framing, rotation angle and time constraints. Deep-red night vision interface, and settings kept on your device.
- Platform
- Web (browser, installable as a PWA)
- Score
- Framing · Visibility · Surface brightness · Structure
- Multipliers
- Moon · Bortle 1 to 9 (derived, adjustable)
- Field of view
- Focal length + sensor, or degrees
- Horizon
- 12 or 24 sector mask
- Export
- N.I.N.A. advanced sequence
- Privacy
- Settings kept on your device
- Access
- targets.caelo.works
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How does CaeloTargets compute its score out of 100?
The score is conjunctive: four factors multiply together instead of being averaged. Framing (how the object sits in your field of view) carries the heaviest weight, ahead of visibility (time spent high enough against the available night), surface brightness and the object's structure. The Moon and sky quality then apply as multipliers. A single factor at the floor is enough to drop a target: an object that overflows your sensor cannot make up for it elsewhere. Targets scoring below 40 are not offered.
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Which settings does CaeloTargets need?
Only your position is required, everything else has a default. Field of view is entered as focal length plus sensor, or straight in degrees. The horizon is drawn sector by sector (12 or 24 azimuths) to account for trees and rooftops, with "City garden" and "Balcony" presets. Bortle is derived from light pollution data for your position and stays adjustable from 1 to 9.
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Can a night plan be exported to N.I.N.A.?
Yes. CaeloTargets generates an N.I.N.A. advanced sequence containing coordinates, framing, rotation angles and time constraints. The file is built entirely in your browser.
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What happens to my position and my settings?
Position, field of view, object types, horizon, framings and plans are all kept on your device. Position and field of view are sent to the CaeloTargets servers only for the duration of the ephemeris computation, and are not shared with any third-party service.
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Does CaeloTargets have a night vision mode?
Yes. A night vision mode switches the interface to deep red to preserve dark adaptation. It is enabled on demand, standard mode being the default.