HOYS Citizen Science2022-08-04T18:25:42+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!


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, 8 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 186

4 August 2022|

This week we look at the light curve of the young star BB Ori. It is situated in the L1641N target field, just south of the Orion Nebula (M42). The [...]

Lightcurve of the week 185

28 July 2022|

We are making good progress on the writing of the next few papers with HOYS data, so this week we have a look back at a plot from an earlier [...]

Lightcurve of the week 184

21 July 2022|

This week we are looking at the young star LkHa154 in the Pelican Nebula. It is classified as an emission line star. This means, if you take a spectrum you [...]

Lightcurve of the week 183

13 July 2022|

This week we look at the object V1319Cyg, which is situated in the field around the Berkley 86 open cluster. We show the light curve in V and I in [...]

Lightcurve of the week 182

8 July 2022|

This week we have a look at the history of data taken for HOYS by our participants (sorry, no actual light curve). In the plot we show (as a blue [...]

Lightcurve of the week 181

1 July 2022|

After preparing the figure for this week's post, I realised it is an old friend of this feature, and we looked at it a few times - most recently in [...]

Lightcurve of the week 180

24 June 2022|

This week we don't look at one of our light curves, but at where the HOYS fields are on the sky. This is shown in the above plot. While it [...]

Lightcurve of the week 179

17 June 2022|

This week we stray away from the usual young stars and have a look at an old star instead. It is situated in our only far southern field, near the [...]

Lightcurve of the week 178

10 June 2022|

With the database back, we can have a renewed look at interesting objects in our database. One of the first stars we investigated in detail, was the young variable V1490Cyg, [...]

Lightcurve of the week 177

3 June 2022|

The database recovery has now almost finished and we started to run tests to check if all went as intended. Some further tests and changes are needed on the web [...]

Lightcurve of the week 176

25 May 2022|

We have now started the database recovery and we will update everyone about the progress tomorrow via our social media accounts. While this is progressing, we have another look back [...]

Lightcurve of the week 175

17 May 2022|

While we are working on restoring the database, we have another look back at one of our earliest light curves. This week at the 8th post in the series, which [...]

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