ASTRO: M33

Taken on 19 Sept 2009 from a farm just south of Bluenkob state park,
PA. TOA150 at F/7.3. STL11000M, 1x20 min each LRGB. Cropped and
reduced 50%.

I saw the comments on another image of M33 looking too blue. Other
than the "set background" feature of CCDStack I have not adjusted the
color of this image.

Robert Price wrote:
Taken on 19 Sept 2009 from a farm just south of Bluenkob state park,
PA. TOA150 at F/7.3. STL11000M, 1x20 min each LRGB. Cropped and
reduced 50%.

I saw the comments on another image of M33 looking too blue. Other
than the "set background" feature of CCDStack I have not adjusted the
color of this image.

That's blue all right. The 11K is a rather blue sensitive chip. Did
you do a G2V color balance or otherwise adjust white stars to white
color? Even the HII regions show little pink.

Rick
--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

Robert,

nice blue image ;-)
I am by no means an expert in colour imaging, but a face-on galaxy usually
shows a brownish central area with blueish spiral arms. If the whole galaxy
has the same colour this _may_ be true, but more likely something has gone
wrong.
Using a RGB ratio of 1:1:1 usually does not work unless the filters and the
CCD chip are matched for that purpose.

Stefan

"Robert Price" schrieb im Newsbeitrag
...
Taken on 19 Sept 2009 from a farm just south of Bluenkob state park,
PA. TOA150 at F/7.3. STL11000M, 1x20 min each LRGB. Cropped and
reduced 50%.

I saw the comments on another image of M33 looking too blue. Other
than the "set background" feature of CCDStack I have not adjusted the
color of this image.