Unfortunately the whole shebang is getting heavier than I would like. Note the positions of the 25kg in counterweights and the rear-heaviness of the OTA. The latter issue put me off using a Panoptic 41mm eyepiece instead of the much lighter Celestron e-lux in initial trials. I may have to revisit this, since the considerably wider FoV of the Panoptic may make it much easier to acquire guide stars. The e-lux FoV is not quite wide enough to show a clear shadow of the take-off mirror. All in all, the Slider is a more user-friendly solution than a dual-chip self-guiding camera. With the dual-chip you have to find a guide-star by only rotating the camera. The Slider allows you to search in another 2 axes; to an extent anyway. Additionally, the Slider allows you to place your narrow band H-alpha, or whatever, filter after the take-off mirror, while a dual-chip camera forces that guide chip to make-do with the much dimmer guide-star beyond the filter. Still, off-axis guiding is much more cumbersome than using a separate guide-scope. One day I may even get around to give it a thorough work out. For more stuff visit my primary website: http://www.samirkharusi.net/