Anto
23-07-2007, 01:47 AM
Hello to everyone. I want to share here too my latest job on the asteroid Vesta that I've took on May.
In the processed images it's clear visible the bright and dark areas as in the raw too.
So I think that the bright areas are really albedo differences and the dark area (about 2x2 pix in the processed image) instead could be 50:50 between real and artifact. The reason why I think so is the presence of this area in the raw image (left) and just photometrical relevant in the image rotated (right).
I acquired in different nights just to standardize the acquiring method to enhance better the albedo differences. So, at the end, I just used Red filter (Astronomik, IRcutted) and ADU not over 130. I freezed the seeing artifacts using 37ms, an exposure time not so long but not so short. I've bet all in the acquiring phase. So here's the result that I'm pleasured to share with you and to discuss about the result too.
Regards, Antonello
In the processed images it's clear visible the bright and dark areas as in the raw too.
So I think that the bright areas are really albedo differences and the dark area (about 2x2 pix in the processed image) instead could be 50:50 between real and artifact. The reason why I think so is the presence of this area in the raw image (left) and just photometrical relevant in the image rotated (right).
I acquired in different nights just to standardize the acquiring method to enhance better the albedo differences. So, at the end, I just used Red filter (Astronomik, IRcutted) and ADU not over 130. I freezed the seeing artifacts using 37ms, an exposure time not so long but not so short. I've bet all in the acquiring phase. So here's the result that I'm pleasured to share with you and to discuss about the result too.
Regards, Antonello