Well. Two mediocre images in a row based upon the responses. Iâm on a roll!
With the help of some guys on CloudyNights, I redid the image:
http://www.mikemac.com/Astrophotos/M27-2019-05-30-RGB-2.png ;
<http://www.mikemac.com/Astrophotos/M27-2019-05-30-RGB-2.png>
I think itâs better this time. Now you can notice the stars are slightly
oblong, in differing orientations. Oblong I can understand. Binning 1x1 is
pushing things beyond what my guiding is capable of. But why theyâre
distorted in different directions is new to me. Ideas?
Mike McDonald
mikemac@xxxxxxxxxxx
On May 31, 2019, at 9:43 AM, Michael McDonald <mikemac@xxxxxxxxxxx> wrote:
I was out playing again last night:
http://www.mikemac.com/Astrophotos/M27-2019-05-30-RGB.png
My capturing is getting a bit better. But my flats are still causing trouble.
Whenever I apply the RGB flats and then do background neutralization, I
introduce a red vignetting:
http://www.mikemac.com/Astrophotos/red-vignette.png
Itâs always a red vignette. Before neutralization, the background can be
cyan or red. But afterwards, itâs always a red vignette.
If anyone has an idea of what Iâm doing wrong and/or how to fix it, Iâd
love to hear from you!
Mike McDonald
mikemac@xxxxxxxxxxx
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