[marki]

I am aware of what drizzle does but as the meade publications states there is little to gain using pixel fractions to oversample alone (in envisage) and they recommend you increase the size of the image at the same time. This then starts a sequence of exposures in which the telescope moves to several different positions whilst the camera takes exposures. If you use a mono camera it can take an age to get a set of frames depending on the settings you use. It also increases the chance of tracking error which will ruin the pic anyway meaning much time is wasted unless your telescope has no periodic error. Mine has and as much as I try to remove it by pec training, messing the gears and auto guiding it still does unexpected things at the most inconvenient times so I try to minimise the exposure time as much as is possible which is why I do not use it as I seem to get better pics the old fashioned way. Perhaps one day I will be able to afford a paramount ME or similar but right now everything is a compromise. By the way, Sorry about the HE thing, I just misread your post.

Mark