What does AstraZeneca 90eq need to shoot Jupiter and its four satellites with Canon 50D SLR? Should the PL6.3mm eyepiece be removed?

You can install an eyepiece to find Jupiter, fine-tune the equatorial plane to guide Jupiter into the center of the field of view, and then take off the eyepiece to shoot. If the equatorial telescope has electric tracking, aim at the polar axis of the equatorial telescope and turn on the electricity to continue tracking Jupiter, which will get twice the result with half the effort.

The best shooting method is direct focusing, that is, removing the eyepiece and the 50-day lens, and connecting the focusing base and the 50-day body with a photographic connecting ring to shoot. At this time, it is equivalent to taking a 90EQ objective lens directly for 50 days with a focal length of 1 m, and the imaging size on CMOS (four Galileo satellites in a row) is about 5mm, that is, the span is about 1000 pixels. The diameter of Jupiter is about 3 1 pixel.

If you want to shoot bigger, you can add 2 times or 3 times or 4 times the Barrow mirror, so that the picture of Jupiter and four Galileo satellites covers the whole picture. But the bigger the image, the darker it looks on the LCD screen on the back of the machine, and the harder it is to focus. You can use the method of peripheral focusing, that is, take more pictures near the focus, do a very fine focus at a time, and gradually explore the most accurate focus.