Terms of use for organisers
These terms are the contract you accept when you use the free organiser tools of Astrometrik. The German version prevails.
1. Parties and acceptance
These terms are a contract between Alper Cevik, Schnirchgasse 11/810 1030 Wien Östterreich, Austria, operator of astrometrik.com ("Astrometrik", "we"), and the organisation that uses the organiser tools ("organiser", "you").
You accept these terms online by ticking the box when you apply for or claim an organiser page. We store the version of the terms and the time of acceptance. The person who accepts confirms that they may act for the organisation.
The data processing agreement ("DPA") is part of this contract.
2. The service
Astrometrik is a website with sky data and a calendar of astronomy events. Clubs, observatories, planetariums, universities and associations can claim or apply for their organiser page. We check applications and may reject them. Approved organisers can use these tools:
- publish events;
- take registrations, with capacity and a waiting list;
- check guests in at the venue (entrance QR code, or ticket plus location within 2 km);
- send live announcements;
- receive messages from the emergency ("SOS") button;
- run a moderated photo and comment wall;
- offer a sky-hunt game with an event ranking;
- show event summary pages;
- use your own short address astrometrik.com/<name>;
- offer a page that guests can add to their phone's home screen;
- send web push notifications;
- offer calendar files.
3. Free of charge; possible fees later
- You can use all tools free of charge for 24 months from approval.
- We do not collect card details, and nothing is charged automatically.
- If we ever want to charge fees after that period, we will announce this at least 3 months in advance in text form. Fees only apply if you actively agree.
- If you do not agree, you may keep using the free features that remain, or leave.
4. No payments through Astrometrik
Astrometrik never takes, holds or processes money. For paid events, you tell your guests how to pay: at the venue, on your own ticket or payment page, or by bank transfer to details you enter. Those bank details are shown only on the guest's ticket and in the guest's email.
You can mark a guest as "paid" in the list. This is only a note for you.
You alone are responsible for prices, collecting payment, receipts and invoices, taxes and refunds.
5. Your duties
- Keep the information about your organisation and your events accurate.
- Only upload logos, posters, photos and texts that you have the rights to use.
- Do not publish unlawful content.
- Use attendees' email addresses and other data only for the event. Do not use them for marketing unless the person has consented.
6. Guest posts
Guests who have checked in or have a ticket can send photos and comments for your event wall. We re-encode uploaded images, which removes embedded metadata such as GPS location. Nothing becomes public until you approve it. Whether you approve, reject or delete a post is your decision and your responsibility. A post that is reported three times is hidden again automatically.
7. Safety at your event
You are responsible for your event and for safety at the event. This includes times, prices, changes and cancellations.
If you use the SOS button, guests' SOS messages appear in your panel and are sent to your organisers as push notifications. The button supports you, but it never replaces emergency services or your staff on site. The page tells guests to call the emergency number in an emergency.
8. Attendee data
For attendee data of your events, you are the controller and we are your processor. The details are in the DPA. For everything else on the website, we are the controller; see our privacy notice.
As controller, you are responsible for your own legal basis and for informing your attendees. You may point to our privacy notice and add your own information. If your organisation is outside the EU/EEA, you must also follow your local law, for example the Turkish data protection law (KVKK).
30 days after an event ends, names and email addresses of registrations are erased automatically. If you need the list for your own records, download the CSV file before then. You are responsible for files you download.
9. Rights to your content
You keep all rights to your content. You give us a non-exclusive, free licence to display your content (for example texts, logos, posters, photos and event details) on astrometrik.com and when your pages are shared, for example in link previews. The licence ends when the content is deleted.
10. Availability and changes to the service
We run the service on a best-effort basis. We do not guarantee any particular uptime. We may change features, and maintenance can cause interruptions.
11. Liability
- We are liable without limit for intent, gross negligence and personal injury.
- Otherwise, our liability for slight negligence is excluded, as far as the law allows.
- We are not liable for the events themselves or for organiser content.
12. Indemnity
If a third party makes a claim against us because of your unlawful content, you must indemnify us against that claim.
13. Suspension and blocking
If you break these terms or the law, we may hide your content, suspend your account or block it.
14. Termination
Either party may end this contract at any time, without notice and without cost, for example by email to info@astrometrik.com.
After termination, we delete your organisation's data within 30 days. Public pages of past events can stay; on request, we anonymise or delete them.
15. Changes to these terms
We announce changes to these terms in the organiser panel. For material changes, we ask you to accept the new version at your next login. If you do not want to accept, you can end the contract (section 14).
16. Applicable law and courts
Austrian law applies, excluding its conflict-of-law rules and the UN Convention on Contracts for the International Sale of Goods. The competent court for Vienna, Inner City (Innere Stadt), has jurisdiction, unless mandatory law provides otherwise.
17. Final provisions
- If a provision of these terms is invalid, the rest of the contract remains valid.
- The DPA is part of this contract.
- These terms exist in German, English and Turkish. If the versions differ, the German version prevails.
Version 2026-10 · 2026-09-23