Yes, much better after deconvolution, whatever that is.
I was out observing about the same time and got good views of M13, M92 M57
and M27, but lacking color. Your image really shows the unique beauty of
Trifid.
Wikipedia says Messier used a 4 inch refractor in Paris to make his
discoveries. That reflects, (collective groan), the importance of dark
skies, eh?
Also interesting is that the Messier objects were probably "nuisances" for
Messier while hunting comets.
On June 11, 2019 6:16:30 PM Michael McDonald <mikemac@xxxxxxxxxxx> wrote:
I like to start with the local experts before I make a fool out of myself
in front of the whole world! :-)
A little better without the crud and holes in the stars:
http://www.mikemac.com/Astrophotos/trifid-reintegrated-2019-06-08.png ;
<http://www.mikemac.com/Astrophotos/trifid-reintegrated-2019-06-08.png>
Still have bloated stars and some fringing.
And coma! Doesn’t sound like there’s much I can do about that though.
Mike McDonald
mikemac@xxxxxxxxxxx
On Jun 11, 2019, at 5:58 PM, Jim Waters <jimwaters@xxxxxxx> wrote:
Have you posted this on the PI Forum?
Space is not black…
Jim
jimwaters@xxxxxxx
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of Michael McDonald
Sent: Tuesday, June 11, 2019 5:58 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: Fungus eating the stars?
Nope, I haven’t progressed far enough to use deconvolution yet. I did
download “PSFImage†the other day to try deconvolution as my stars a
bloated in a bunch of my images.
I’m experimenting with running ImageIntegration by hand on the registered
G subs. So far, I can’t reproduce the that hole. I have reproduced the
one in all three components using Winsorized Sigma Clipping. If I turn
“Clip low rangeâ€, it cuts that star in half, with the left side black
and the right side normal.
If I use “Linear Fit clipping†instead, the crud goes away!
No crud:
http://www.mikemac.com/Astrophotos/no-crud.png ;
<http://www.mikemac.com/Astrophotos/no-crud.png>
No hole:
http://www.mikemac.com/Astrophotos/no-hole.png ;
<http://www.mikemac.com/Astrophotos/no-hole.png>
I can’t reproduce the parameters BPP is using to produce the holes. :-(
Mike McDonald
mikemac@xxxxxxxxxxx
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