Since we are slowly nearing 110 thousand images in our database and will celebrate our 10th anniversary in the autumn, we want to use this week for a general update on the statistics of the data we have collected to date. To start with: none of this would have been possible without the help and support form the amateur astronomers taking most of our data and helping with the processing and quality control. THANK YOU VERY MUCH!

In the plot above, the blue line shows how many images we have in the database over time. The steeper the line, the more images we get. One can see that the image submission rate has increased over time, and we currently add about 20,000 images per year. This is more than 50 per day! This means, in the last three years we have essentially tripled the amount of data we have. A total of over 375 million brightness measurements of stars has been made in them.

The blue ticks at the bottom indicate dates when we have given talks to amateur societies and conferences about HOYS. It is evident that the image submission rate has stepped up due to these talks, as well as the more widely advertised campaigns (in red). While these talks are now less frequent (I’ll give another one in 10 days time), we are very happy to accommodate them. If you would like one for your society, please get in touch.

On the top, we indicate with green ticks when papers using HOYS data have been published. We do average about two papers per year currently, with participants as co-authors if they wish. Further papers are submitted and in preparation, and we have several post-graduate students working on projects using the data. So there are plenty more to look forward too. Many of these longer term research projects are of course only possible with continued new observational data. So please keep the data coming in. This is what makes the HOYS dataset unique in world, and allows us to investigate things that no-one else can do.