Here I am at the telescope waiting for the rain to stop so I can actually look at something astronomical instead updating the blog. One of the things astronomers have to make peace with is the weather. Telescope time is meted out to various different observers and there are no rain dates if the weather is bad. This was disappointing earlier this week when we wanted to observe Jupiter’s moon Io while it was in eclipse to see if we could measure the infrared emission of the active volcanoes on its surface without any confusing reflected sunlight. Sadly, it poured rain and there was no telescope action. Maybe tonight the weather will clear and we can do something….