|Date:||Thu, 14 Jul 2005 18:30:52 GMT|
"Ed T" <reply@xxxxxxxxxxxx> wrote in message news:iKxBe.7997$8f7.5855@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx > > "Tom" <Tom@xxxxxxxxxx> wrote in message > news:EvxBe.128438$9A2.38607@xxxxxxxxxxx >> http://www.spaceweather.com/swpod2005/14jul05/favre1.jpg >> >> This was taken with a 'lowly" SW 80/400 achromat. It rivals some of the >> best AP and TV shots I have seen. >> The OTA sells for a measly 150 US!! >> >> http://www.islandeyepiece.com/telescopes/sw804.htm >> >> > > Thats a great shot! Chromatic abberation is a non-issue when the "input" > is such a narrow band of the visible spectrum. > well sure but you have to consider the optical quality overall and not just color correction. It would seem that the achromat doublet is of good quality for a cheap price!!
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