----- Original Message ----- From: "Paul Sventek" <sventek@attglobal.net> To: "seesat" <SeeSat-L@satobs.org> Sent: Monday, February 27, 2006 6:38 PM Subject: mysterious image > A friend of mine emailed several digital images he took this morning (Feb > 27) while imaging the area around Antares. On all images is an odd, > elongated, greenish object north and west of Antares. http://pws.prserv.net/svntk/060227antarescomposite.jpg +++++++++++ The fact that the anomaly keeps its shape over such a long time and because they look very much like the internal reflections that I've seen in many of my own photos, I would say that that is what it is, an internal reflection. The magnesium fluoride that is used as a multicoating on the lenses is greenish which is probably why the anomaly itself looks green. I believe it's faint because the MgF2 is doing its job. The fact that it shifts in position might reveal that the light causing the effect was external. The guided camera moved but the interfering light did not. Maybe. Tom Iowa USA ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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