tag:blogger.com,1999:blog-27276563.post116322589921946758..comments2023-09-18T06:38:04.194-04:00Comments on Palemaleirregulars: The Bird on Shipshape, on the Nest, and CCD ArtifactsDonegal Brownehttp://www.blogger.com/profile/09809720759418462703noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-27276563.post-1163372242477377042006-11-12T17:57:00.000-05:002006-11-12T17:57:00.000-05:00Yes, I agree we were fooled in the field. I'll pos...Yes, I agree we were fooled in the field. <BR/><BR/>I'll post a photograph that shows what we were seeing at the highest magnification of the scope before the images were brought home and further enhanced. <BR/><BR/>I also think after going back to previous photographs of the GM Peregrines that this Kestrel doesn't sit in the kind of postures that those did and it was a cue I missed.Donegal Brownehttps://www.blogger.com/profile/09809720759418462703noreply@blogger.comtag:blogger.com,1999:blog-27276563.post-1163316917732240532006-11-12T02:35:00.000-05:002006-11-12T02:35:00.000-05:00The color cast problems you have digiscoping are n...The color cast problems you have digiscoping are not CCD artifacts. It is an optical problem common with digiscoping, called Chromatic Aberration. It results in Blue/Purple fringe problems at the edges of objects.<BR/><BR/>CCD artifacts are a minor problem with digital cameras. Chromatic Aberration and JPEG artifacts (problems with compression which result in a loss of detail and similar problems to Chromatic Aberration) are your issues here.<BR/><BR/>The bird is a Kestral. Tail shape, body shape, head markings, and lack of eye ring all point to a Kestral.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-27276563.post-1163313976659487212006-11-12T01:46:00.000-05:002006-11-12T01:46:00.000-05:006:06 Anon,Supposedly a female Kestrel lacks the bl...6:06 Anon,<BR/><BR/>Supposedly a female Kestrel lacks the blue-gray wings. If Kestrel he was male.<BR/><BR/>By naked eye the colors in the photograph were not really apparent. I've been giving thought to the hypothesis, that pigment registered by the camera, was then enhanced by some aspect of the photo process, at which point the camera told us it actually may have been a Kestrel. Something all our eyes couldn't see, hampered by distance, glare, and the idiosyncracies of high magnification. .Donegal Brownehttps://www.blogger.com/profile/09809720759418462703noreply@blogger.comtag:blogger.com,1999:blog-27276563.post-1163286412277432662006-11-11T18:06:00.000-05:002006-11-11T18:06:00.000-05:00Is it possible that a female Kestral could have th...Is it possible that a female Kestral could have that plummage?Anonymousnoreply@blogger.com