HOYS Citizen Science2021-04-21T12:07:52+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 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 now a Global Sky Partner of Las Cumbres Observatory.
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Lightcurve of the week 119

19 April 2021|

This week we have a look at a long term variable star in the P Cyg target field of HOYS. The star in question is V434Cyg, which is classified as [...]

Lightcurve of the week 118

15 April 2021|

The HOYS winter target that is visible the longest each spring is NGC2264 (The Christmas Tree Cluster). Within it there is a large variety of young and variable stars. Amongst [...]

Lightcurve of the week 117

8 April 2021|

This week we look at the star BE Ori, in our L1641N target field. This is one of our most southern fields in Orion and has now set for the [...]

Lightcurve of the week 116

1 April 2021|

This week's featured light curve is not a young star. Instead we are looking at the Mira type variable, KS Cyg.  These type of stars are pulsating giants with periods [...]

Lightcurve of the week 115

24 March 2021|

This week we have a timely look at one of the Gaia photometric alerts. In particular Gaia21bkd, which was published in the evening of March 18. The Gaia light curve [...]

Lightcurve of the week 114

17 March 2021|

This week we revisit one of the old friends of the light curve of the week feature. The star 2MASS J21383981+5708470 projected onto the target region IC1396A (the Elephant Trunk [...]

Lightcurve of the week 113

11 March 2021|

This week we have another look at one of the stars from the auxiliary dataset. It is of the star 2MASS J21083418+4656198. There is not much known about the star [...]

Lightcurve of the week 112

5 March 2021|

This weeks light curve is from our auxiliary dataset, introduced as part of our 100th light curve of the week video. This is a huge set of data taken as [...]

Lightcurve of the week 111

26 February 2021|

One of the ongoing science projects with the HOYS data is the search for periodic variables in the Pelican Nebula. Here we show one of the easiest to find, characterise [...]

Lightcurve of the week 110

20 February 2021|

This week we have a rare look at a southern hemisphere target. The star of interest is in the field around Gaia19eyy, a regularly erupting HerbigAeBe star - but this [...]

Lightcurve of the week 109

10 February 2021|

This week we look at the light curve of the star PR Ori (or so one might think). But let's start at the beginning and work through the 30min of [...]

Lightcurve of the week 108

5 February 2021|

This week we investigate the (rather boring looking) light curve of the star BD+65 1636. It is classified as a young stellar object with a spectral type of B8, so [...]

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