Terms of Service

Skyshot Solver (skyshot.app) · version 2026-10 of 10 October 2026

In short. Skyshot Solver determines the sky position, scale and orientation of an astronomical image (plate solving) and returns a WCS solution. The browser panel, the demo and the free account cost nothing. Images are processed in your browser; only star positions reach the solver. A result is returned only when it passes verification, so an image can remain unsolved. The free account gives up to 100 solved images per calendar month and can be deleted at any time.

1. Provider

The services are provided by Afterstate PSA, ul. Plac Europejski 2, 00-844 Warszawa, Poland (“we”), e-mail hello@afterstate.ai. These Terms are the regulations for services provided by electronic means under Art. 8 of the Polish Act of 18 July 2002 on providing services by electronic means. They apply to everyone who uses skyshot.app (“you”).

2. Services

2.1 Browser panel

The panel at skyshot.app/app reads FITS, JPEG, PNG and TIFF images up to 300 MB, detects their stars in your browser and sends only the star list (positions, brightnesses, image size) to the solver. A solved image is returned with its centre, pixel scale, rotation, parity and a TAN-SIP WCS, which you can view as an overlay and download.

2.2 Demo without a key

A demo token gives 20 solved images and at most 60 star lists, and is valid for 24 hours. One network address (IPv4, or an IPv6 /48 prefix) receives one token per 30 days. To get a token, your browser solves a short computational puzzle.

2.3 Free account

After you confirm your e-mail address with a 6-digit code, you receive a free API key. The free account gives:

An allowance not used in a month does not carry over. The limits stated in the version of these Terms that you accepted apply for the whole calendar month.

2.4 Keys issued individually

We may issue API keys under separate arrangements (for example for research or integration partners). Where such an arrangement says nothing else, these Terms apply.

2.5 Contact form

The contact form on skyshot.app sends your message to us. We reply by e-mail.

2.6 Content of other providers

The sky survey comparison (CDS, Strasbourg) and the demo video (YouTube) load only when you choose to use them. They are provided by those parties under their own terms.

3. Technical requirements

4. Conclusion of the contract

5. Rules of use

You use the services in accordance with the law and these Terms. You must not supply content of an unlawful nature. In particular, you must not:

Treat your key like a password: anyone who has it can use your allowance. If a key leaks, delete the account in the panel or write to us.

6. Results and liability

7. Availability and changes to the service

The service may be briefly unavailable during maintenance or updates. We may change or end the services. We will announce the end of the free account programme in the panel and in the API (/v1/info) at least 30 days in advance.

8. End of the contract

What we keep after the end of an account is described in the Privacy Policy.

9. Complaints

Send complaints to hello@afterstate.ai. Describe the problem and when it occurred; for a free account, give the account’s e-mail address. Never send your key. We reply by e-mail within 14 days of receiving the complaint.

If you are a consumer, you may also use out-of-court complaint and redress procedures, for example the help of a municipal or county consumer ombudsman (rzecznik konsumentów) or a consumer organisation.

10. Changes to these Terms

11. Law and disputes

These Terms are governed by Polish law. If you are a consumer whose habitual residence is in another country of the European Union, you keep the protection of the mandatory provisions of that country’s law. Disputes are resolved by the competent common courts. The processing of personal data is described in the Privacy Policy.

These Terms apply from 10 October 2026.