HOYS Citizen Science2026-08-12T12:31:26+01:00

HUNTING OUTBURSTING
YOUNG STARS

The HOYS citizen science project works with amateur astronomers on long-term photometric monitoring of young stellar clusters to find outbursting and other interesting objects for detailed follow up as well as the study of star and planet formation processes. Watch our short INTRODUCTION VIDEO.

The database is ONLINE (for data submission).

Brief interruptions of service are possible over the next few weeks due to tests on the new database structure.

HOYS CITIZEN SCIENCE

The project aims to observe nearby young clusters and star forming regions visible from the northern hemisphere to study their variable young stars. The target list currently contains 9 young clusters visible in the winter, 9 targets for the summer as well as 7 additional variable objects of interest.

We rely on amateur astronomers to use their imaging skills and equipment to monitor these target areas as often as possible in all available optical filters.

IC5070 Pelican

IC5070 Pelican Nebula, HOYS target 118

We are again a Global Sky Partner of Las Cumbres Observatory

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LATEST NEWS

Lightcurve of the week 396

12 August 2026|

It is New Paper Day! - AGAIN! 🙂 You can read the latest paper with HOYS involvement (accepted for publication this week) on this link. There is a link to [...]

Lightcurve of the week 395

7 August 2026|

HOYS stands for "Hunting Outbursting Young Stars" - and this week we actually show one 🙂 The above image is the R and I-band light curve of the young [...]

Lightcurve of the week 394

29 July 2026|

It is New Paper Day! You can read our latest paper (accepted for publication this week) on this link. There is a link to the full pdf on the [...]

Lightcurve of the week 393

22 July 2026|

This week we look at the young star GM Cep, an old friend of this feature 🙂 It is situated in the Elephant Trunk Nebula target region. The light [...]

Lightcurve of the week 392

17 July 2026|

This week just a quick reminder that we also do talks about HOYS to societies. Today I will be giving a short presentation to a group of educators about [...]

Lightcurve of the week 391

10 July 2026|

This week we look at a screen shot of a rather boring looking light curve - more or less flat and most variations look like noise in the data. [...]

Lightcurve of the week 390

3 July 2026|

This week we have a sneak preview of a figure for one of the papers currently in the advanced stage of preparation. In that paper we are making different [...]

Lightcurve of the week 389

26 June 2026|

Where is V2492Cyg???? In the past we have repeatedly shown and discussed the light curve of V2492Cyg. For example the post from week 332 shows the full HOYS data [...]

Lightcurve of the week 388

19 June 2026|

This week the image above is of the HOYS server homepage. So why is this exciting? Well, as you know we have been working in the background to restructure [...]

Lightcurve of the week 387

15 June 2026|

Apologies - it was so busy on Friday, I forgot to press the submit button .... We are approaching the summer slump of data coming in - all winter [...]

Lightcurve of the week 386

5 June 2026|

Do you remember the strange double period object we looked at in week 306 and week 268? It did show show for several years a behaviour that indicated two [...]

Lightcurve of the week 385

29 May 2026|

This week we look at the light curve of the young star AH Ori, which is situated just north of the Orion Nebula, M42. The object is classified as [...]

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