Saturn

For a change, I'm adding a planetary image, obtained using the society's Celestron 9.25" f/10 Schmidt-Cassegrain Telescope. I used the society's Imaging Source DBK camera and IR block filter in a 2x barlow lens, slid back to achieve more like 3x, thus giving a focal length of about 7m at f/30. This telescope works better for planetary detail than the stopped down 20" f/4.8 Newtonian, although it had to sit outside for well over an hour to cool to reduce internal air currents, while seeing also slowly improved. I recorded about 2000 frames at 1/30" on high gain and stacked the best 40% or so using Registax 6. This was taken a little after opposition (when Earth passes between the Sun and Saturn) on 7th May, at 21:31UT.