The Moon, Jupiter… and the Galilean satellites

publicado en: Photography | 0

The Moon and Jupiter looked glorious last night, flooding Horsham with light in the cold early evening. We were walking back from town, and I was just willing to arrive home and test my month-old Nikon D7500 in night sky photography.

I attached the Sigma 18-200mm telephoto to the camera, and I did a few photographs (on tripod and with remote, of course). ISO 400, 1/320 sec speed at f/11 gave me the nicest image quality (increased to 1/15 for Jupiter, which I overlaid in Photoshop Elements). I used a gradual filter, but it was quite pointless: the Moon is just way brighter than Jupiter, with or without gradual filter.

The result is below, and I am pleased with it. I could have done something better, but it was cold and I just wanted to go back inside.

The Moon, on the left, and Jupiter, to the right.
The Moon and Jupiter. ISO400, f/11, 1/320 sec

But I also did a few shots of Jupiter, zooming to the maximum. I used ISO800, and 1/15 sec at f/6.3. I was about to discard those photographs, when I realised it could be interesting to open them in Camera Raw and well… see what was there. To my surprise, the raw data contained a faint lineament formed by 4 lights flanking Jupiter in each of the photos I did (so I discarded that they were noise), and well, it was obvious what I had in front of me: the four Galilean satellites: Callisto, Io, Europa and Ganymede, in that order.

This is what the following photo shows. It’s a crop out of a larger photo took at 200 mm

Jupiter and the four Galilean satellites, on a photo made with a 200 mm telephoto.
The Galilean satellites and Jupiter. ISO800, f/6.3, 1/15sec

What’s your experience using just a camera and a telephoto for imaging the skies? Comments, please!

Deja un comentario / Leave a comment