I've used it with a couple of different telescopes and several camera lenses - here's a summary of my experiences:
- It's more convenient to use than my MX5C system (which needs a PC beside the telescope);
- Focussing was aided by taking a series of short images of a bright star, and zooming in to the image on the camera display;
- The built-in 30-sec max exposure time is long enough when imaging through a portable telescope - you really need a fixed scope (with precise polar alignment, and auto-guiding) for much longer exposures;
- When imaging with a camera lens (for wider-angle pictures), exposures of 2-4 mins are more useful, so I built an electronic timer to control these;
- The charge in my Hybrio rechargeable batteries doesn't last long when the camera is imaging out in the cold, so I built a DC converter to run it off a big 12V battery;
- After a few minutes' imaging, the heat developed within the camera causes the "elecronic noise" in the image to increase noticeably. My current solution is to use the camera's "noise reduction" (dark-frame subtraction) feature, but this means that I can only image for half the time;
- The internal IR-blocking filter on the camera's CCD drastically reduces its sensitivity to hydrogen-alpha light.