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I know nothing about astronomic software but came across this page from a deleted link on the focus stacking page. From what I can see Registax is notable enough for an article, eg on joe.zawodny.comit says "RegiStax has been around for a long time and is probably the single reason why amateur astronomy has made huge strides in the last several years", there are numerous references to it and tutorials on how to use it (eg ). As far as I can see it is a RussianDutch program and the non functioning link, www.astronomie.be/registax, is the european mirror (I'm not sure why it is currently non responive). Maybe this article isn't needed if there is a general page on this type of software (I'll go search), but for the meantime I would say keep. I will remove the proposed deletion template. --Tony Wills (talk) 01:52, 23 May 2013 (UTC)