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 was published (facebook page only) on February 25th, 2019.

It shows the first four observing seasons of the variable V608Mon in the Christmas tree cluster. The object sits right between the Cone Nebula and the main cluster of stars, a bit further North. One can see that the source did undergo a longer term (2yr) dimming event and otherwise also showed short term variability, which looks like ‘noise’ in the data. But upon inspection one can see that these short term variation occur in all filters in the same way, hence they represent real variations in the source brightness.

Here is what we wrote about the light curve, back when it was first published:

This is the light curve of the T-Tauri star V608Mon in NGC2264. It shows long term dimming during the last two observing seasons as well as short term variability. The Halpha points above the R-Band data show that it is probably a classical T-Tauri star with strong Halpha emission.