The seeing can sometimes change by the minute! By capturing images at a medium to high frame rate, and preferably the best seeing possible, you can take advantage of those fleeting moments that the atmosphere is the most stable, and put together enough images to make a sharp, noise-free image of a planet, that will make your friends think that you stole a NASA image.Ī final obstacle to overcome is something called atmospheric dispersion. If the star is barely twinkling or not at all, that is a good time to run to your telescope and begin imaging as soon as possible. A good telltale is to look at a bright star about 20-30 degrees above the horizon. Keep in mind that just because it is a crystal clear night, doesn’t mean that it is a good night for planetary imaging. Astronomical Seeing is usually a rating from 1-5 or 1-10 of how good or bad the scintillation is predicted to be at any given hour a 1 being the absolute worst seeing possible, making a planet look like a featureless shimmering ball of light through a telescope. This is known in sciency terms as “scintillation”. The stars at night “twinkle” because of air currents of different temperatures, and consequently, differing densities mixing above our heads and bending that light erratically as it makes its way to our eyes or camera. Remember the song, “Twinkle Twinkle Little Star?” This is a romanticized song about a very annoying phenomenon that astronomers deal with to some extent on a daily and nightly basis.
The reason you want to record high-speed videos of planets is to take advantage of the moments when the Earths atmosphere is most stable. These cameras are capable of recording very high frame rates and are available in different chips and pixel sizes to get the best possible resolution from your telescope.
The best way to capture planetary images is with a relatively inexpensive dedicated planetary camera like those made by ZWOand The Imaging Source.
#Ccd for mac with frame rate control movie#
The use of a Canon DSLR camera coupled to a telescope while recording a 5x live view via EOS Camera Movie Record is an improvement, but still far from ideal. The stacking of video frames is the ideal way to capture planetary images, but there are much better ways to accomplish this task.
Some folks have even recorded video frames with their phones and stacked them into images. Some people hold their phone to the eyepiece but using a smartphone adapter like the Celestron NexYZ will provide stability to capture clearer images. There are several ways to capture planetary images. An easy way to capture Mars and other planets is with your phone using a smartphone adapter.
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