Morning Ralph and others Many thanks for your reply. I do understand your viewpoint and I certainly would not expect you to make available every single raw image that you get but I would very much like to see a "before" and "after" image so that I can better judge for myself what is real and what is not. I would also very much like to see a description of how you get from the raw to the final image. I dont think I can ever recall you mentioning what software you use so what Im basically getting at is that anyone new to this field doesnt have much of a clue about how to "go about it" and has to re-invent the wheel. With this much of a barrier present it will not be easy to get people inspired to try for themselves - I think this is also why readers generally have not responded with comments about your images - its all "black magic" to them so little or no interest. There are no doubt some who may be tempted but they need to be encouraged and shown how it can be done. I personally have very little interest in high resolution imaging and to be honest most of the time think its a total waste of effort but that could be due to total ignorance on my part. One thing I do know is that I could never even contemplate attempting such - I do not have the equipment, and more importantly, I do not have the seeing conditions necessary for such imaging. If I have seeing better than 12 arc seconds then I regard that as "very good seeing" for my location. As a professional astronomer I often experienced sub arc second seeing at the Observatory's outstation at Sutherland some 400 km away from Cape Town - once the seeing decayed to the 10 arc second level we usually called it a night as the seeing was so bad the accuracy of our photometric observations became too bad - we were attempting to work to milli-magnitude accuracy , so unless I move location now its pointless doing high resolution imaging.Adaptive optics might permit it but Im certainly not going to go to that extreme! Now back to my low resolution geo imaging :-)) Best wishes Greg _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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