Thomas Wright was the first person to work out that the Milky Way was a flattened disc of stars. He studied the skies from this observatory in County Durham, which my mum and dad live next to.
Articles tagged with "star trails"
One evening I was at the lake and I’d just set a series of photos going, when I saw a bright light near the summit of the volcano. I thought for a moment that it was lava, but could soon see that it was skiers descending. The mountain was officially closed so I didn’t know who it could be – whether they’d sneaked up there or were volcanologists who’d been to look at the crater, or what. I found out later that it was mountain guides, protesting about the closure of the mountain. They were arguing that it was safe to visit the crater now and that their livelihoods were being ruined. The protest was successful – a few days later, access to the mountain was permitted.
I went up onto the roof of the ESO building on a clear evening, and tried a star trail photo. I’d never done one from the city before but I thought it should be possible to do one, with the exposure set so that the buildings were not overexposed but at least some stars showed up. With a 4s exposure at ISO 100, this just about worked. So I took 500 of those and stacked them together, and got some decent trails. There was also someone coming down the trail from Alto del Naranjo to San Carlos de Apoquindo.
I’d noticed the geostationary satellites a couple of times before on my photographs from Paranal. With this photograph I set out to capture as many as I could and then to identify them. I got a list of all of them, and then worked out the spatial scale of my photo and which direction I was pointing, so that I could work out which point of light was which satellite.
A view from out the back of the residencia, where you can see the southern stars trailing to the right, and the northern stars trailing to the left.
On my second trip to La Silla, I had plenty of free time. We were observing for three nights, but the transport from La Serena to La Silla only goes three times a week, so we had to arrive three nights before our run started, and leave one night after. So, we did a lot of photography. I made this image by stacking 700 individual images, each of which was a 20s exposure at ISO 100, using a 24mm lens at f/1.4. I started the sequence about 45 minutes after sunset, so that there was still some twilight to light up the sky. The moon was full, so the telescopes and the desert got illuminated by that.
A view towards the residencia from the platform at Paranal. I made this photo by stacking 500 photos, each of which was a 5s exposure at ISO 3200.