Horsehead Nebula from Cerro Tololo

This image was submitted by Pelayo Fernández Lobón, a member of the team from vendor Asturfeito that is installing the Telescope Mount Assembly (TMA) in the summit facility building. The picture was taken using a 80 mm f6 apochromatic refractor and a dedicated 20 megapixels colour astro-camera, refrigerated at -10ºC. Total integration time: 2.7 hours (80 subs x 120 seconds each). The radius of the field of view is 1,14 degrees, pixel scale 1.275 arc seconds / pixel. Equatorial mount + Guiding.