Astrometry.net (Nova)

Level 24: Astronomy & Astrophysics

Science · Level 24

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In short

Astrometry.net (Nova) is an AI tool in the Astronomy & Astrophysics category from Astrometry.net Project in New York, United States. The pricing model is free. It is with an English interface that handles German content.

Company HQNew York, United States· Astrometry.net Project

What is Astrometry.net (Nova)?

Astrometry.net is a specialized web platform designed for 'plate solving' astronomical images. The tool analyzes uploaded images of the night sky, identifying stars, constellations, and various astronomical objects automatically. By matching the star patterns against known celestial maps, the software accurately determines the coordinates of the image center, rotation, and the plate scale.

The engine relies on a robust algorithm capable of delivering reliable results even with noisy or partially obscured imagery. Users upload their raw data, which is processed by a server cluster to map the input to known sky survey indices. Upon successful identification, the system returns an annotated version of the image along with precise astronomical metadata.

Beyond the web interface, the service provides an open API utilized by various astronomical software suites for integration. As an open-source project, it serves both the scientific community and amateur astronomers by facilitating the efficient cataloging and analysis of their observational data.

Core features & strengths

  • Automated Astrometric Calibration — The system automatically recognizes the sky position without the need for manual initial coordinates. This allows for rapid identification of objects within raw observational data.
  • Seamless Workflow Integration — Through a robust API, the service can be integrated directly into imaging software. This enables real-time plate solving during active observation sessions.
  • Comprehensive Metadata Enrichment — Each processed image receives accurate World Coordinate System (WCS) headers. This information is essential for further scientific analysis and data correlation.

Who is this tool for?

The tool is primarily aimed at amateur astronomers, astrophotographers, and researchers. It is ideal for users needing to catalog astronomical imagery or verify the pointing accuracy of their telescope mounts.

Typical use case

An amateur astronomer captures a series of long-exposure images without automated tracking software. To contribute these images to a public database, the exact sky coordinates and orientation must be verified. The user uploads the files to the Nova service, where the engine calculates the WCS data. This metadata is then embedded into the images, making them discoverable and scientifically usable by the broader astronomical community.

What is Astrometry.net (Nova) good for?

  • The tool is primarily aimed at amateur astronomers, astrophotographers, and researchers. It is ideal for users needing to catalog astronomical imagery or verify the pointing accuracy of their telescope mounts.
  • An amateur astronomer captures a series of long-exposure images without automated tracking software.
  • Automated Astrometric Calibration: The system automatically recognizes the sky position without the need for manual initial coordinates. This allows for rapid identification of objects within raw observational data.
  • Seamless Workflow Integration: Through a robust API, the service can be integrated directly into imaging software. This enables real-time plate solving during active observation sessions.
  • Comprehensive Metadata Enrichment: Each processed image receives accurate World Coordinate System (WCS) headers. This information is essential for further scientific analysis and data correlation.

When a different tool fits better

It is not suitable for terrestrial photography or images lacking identifiable star patterns. Furthermore, it should not be used for highly sensitive or proprietary data, as the web service operates on a public-access model.

Pricing & plans

Astrometry.net is operated as an open-source project and provides the Nova web service free of charge.Free

Supported languages

DEGerman — content yes, interface in EnglishENEnglish — fully supported

The user interface is primarily in English, functionality is language-independent.

Interface = the tool's menu language, content = the language you can work in. Without guarantee — vendors keep expanding their language coverage.

Privacy & GDPR

Operated by an academic group (University of Toronto/NYU). Uploads are public by default but can be set to private per image; an account is optional. No DPA on offer — designed for private and scientific use.

Fact sheet

Fact sheet with the key data
VendorAstrometry.net Project
HeadquartersNew York, United States
CategoryAstronomy & Astrophysics
Pyramid levelLevel 24 – Astronomy & Astrophysics
Pricing modelFree
Free forever optionYes
Open SourceNo
Entry planStandard (Web Service): 0 $ (0 €)
Germancontent only, English interface
Englishinterface and content
Privacy classificationUnclear
Data processing agreementThere are no enterprise plans, DPA, or standard contractual clauses, as this is an academic research project.

Alternatives to Astrometry.net (Nova)

  • ALeRCE — Free · HQ: Santiago, Chile · Unclear
  • AstroLens — Free · HQ: United States · GDPR / EU
  • ExoMiner — Free · HQ: United States · GDPR / EU
  • Galaxy Zoo — Free · HQ: Oxford, United Kingdom · Unclear
  • GraXpert — Free · HQ: Germany · GDPR / EU

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Frequently asked questions

How much does Astrometry.net (Nova) cost?

Astrometry.net is operated as an open-source project and provides the Nova web service free of charge. Current plans: Standard (Web Service): 0 $ (0 €).

Is Astrometry.net (Nova) free?

Yes. Astrometry.net (Nova) can be used without paying. The service is free for all users. Usage is subject to fair-use rate limiting.

Does Astrometry.net (Nova) support German?

Partly. Astrometry.net (Nova) handles German content reliably, but the interface is English. The user interface is primarily in English, functionality is language-independent.

How does Astrometry.net (Nova) handle data privacy?

Data is processed on servers primarily operated by academic research institutions in the United States. Uploaded astronomical images are not used for training commercial AI models but are stored in the project's public database. Upload only astronomical image data; avoid uploading private or sensitive metadata.

Who is behind Astrometry.net (Nova)?

Astrometry.net (Nova) is operated by Astrometry.net Project, headquartered in New York, United States.

Where does Astrometry.net (Nova) sit in the AI Tool Pyramid?

Astrometry.net (Nova) sits on level 24 (“Astronomy & Astrophysics”) and belongs to the Astronomy & Astrophysics category. Levels group tools by topic and are not a ranking.

Is Astrometry.net (Nova) GDPR-compliant?

Astrometry.net (Nova) does not publicly document its data processing clearly. Before using it for personal or confidential data, review the vendor's privacy policy and data processing agreement yourself.

What are alternatives to Astrometry.net (Nova)?

Comparable tools in the same category are ALeRCE, AstroLens, ExoMiner, Galaxy Zoo. They differ mainly in pricing model, company location and data protection level, so a direct comparison is worthwhile before deciding.