ASTRO: M1 color composition

DvandenH


Dirk:

I realize that you are probably working on the next images by this time,
however, I did want to add some comments.

The files that you posted for M1 all have the same name. To avoid
overwriting of previous files may I suggest that you rename the files
with unique names and place them in a new work folder. Do that in My
Computer. Some file naming convention may be useful. Other
photographers may have suggestions on that. When I have duplications of
filenames of different files that are in different folders, I tack on a
number, e.g., filename-011408-1.tif , for example. That says the base
filename, date and item number. Use FileSave As to rename files that
have been modified, and if you haven't saved the file the original will
be unmodified and the modified file will have the new name. You probably
know all that, and I hope that I haven't said too much.

Of the three images of M1 I thought that the first one, [herein called]
M1-A, was really great. After zooming in on stars and stuff at the pixel
level I noticed that the image pixels were grouped in an 8-pixel x
8-pixel grid pattern. The next two images, say, M1-B, and, M1-C, did not
have that effect.

Image M1-B had the extra bluish light.

Image M1-C has the enhanced brightness light for what seems more than
one filter. There is nearly the same high definition as M1-A, and there
is an overall great dramatic quality. Zooming in to the pixel level I
see that the image has no grid pattern that was found in M1-A. I find
that the stars are extra bright, and possibly 3 times the visible area.
Zooming in to see the individual stars I see that there is a bluish
fringe at the top left of each star disk and a smaller greenish fringe
at the lower right of each disk. That suggests to me that the images are
not coincident in the image modification program. If the same images or
layers were shifted to be coincident the extra brightness of the stars
may be less while keeping the same high focus quality. I say that based
only with my Photoshop imaging and MicroStation CAD image rendering
experience, and I have no knowledge of maxim or CS3.

I see that the edges of the three images are not cropped exactly the
same. When I display each image using IrfanView and switch from image to
image the images display at the same magnification on screen are
slightly not aligned. I don't say that is a problem.

The green and red material lights in the images are also really great.

You images cause a lot of wonder.

Ralph Hertle