HOYS Citizen Science2024-05-17T12:54:12+01:00


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).


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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Lightcurve of the week 279

17 May 2024|

This week we have a look at the distribution of our observatories on the globe. The picture above shows the distribution in Europe and North America, where most of [...]

Lightcurve of the week 278

10 May 2024|

This week we look at the light curve of the object IRAS 07063-1016, which is a candidate young stellar object. In the above plot we show the V, R, [...]

Lightcurve of the week 277

3 May 2024|

We look at the light curve of the young star V397Ori today. It is situated in the outskirts of the Orion nebula (M42) and we looked at last years [...]

Lightcurve of the week 276

25 April 2024|

This week we revisit a variable star from a previous post. In November 2022 we showed the light curve of V1787Ori, which is situated in the L1641N target region. [...]

Lightcurve of the week 275

19 April 2024|

This week we follow up on the post from week 214 (please read again first :-)). This particular part of the research on HOYS light curves aims to quantify [...]

Lightcurve of the week 274

11 April 2024|

This week we look at the new Gaia alert Gaia24beh. It was published yesterday (April 10, 2024) and the source is situated in the Pelican Nebula target region of [...]

HOYS-LCO4 Picture Competition

8 April 2024|

Our teacher training program HOYS-LCO4 is slowly coming to an end. This year 15 teachers with almost 230 pupils from 8 countries signed up to learn how to observe with [...]

Lightcurve of the week 273

4 April 2024|

This week we have a look at the newly published (~3weeks ago) Gaia alert source Gaia24ayj. The object is situated just North of the Orion Nebula and known as [...]

Lightcurve of the week 272

28 March 2024|

Two weeks ago we looked at the new Gaia alert source Gaia24avc, which was situated in the Elephant Trunk Nebula region. On the same date the alert source Gaia24avb [...]

Lightcurve of the week 271

20 March 2024|

This week we show a plot (Fig.5) from our latest paper using HOYS data, that got accepted last week: A survey for variable young stars with small telescopes: IX [...]

Lightcurve of the week 270

14 March 2024|

This week we have a timely look at a newly identified Gaia variable named Gaia24avc. It is situated in the Elephant Trunk Nebula region. It was identified 11 days [...]

Lightcurve of the week 269

5 March 2024|

This week we look at the light curve of an 'old friend' of the project. The young star V350Cep , situated in the NGC7129 cluster. It is a known young [...]

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