Author Topic: Request for assistance  (Read 11542 times)

Offline Nigel Ball

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Re: Request for assistance
« Reply #15 on: 2010 September 17 10:22:47 »
Some fits files play havoc with PI and 2 of yours are these  please read http://pixinsight.com/forum/index.php?topic=2184.0  to see whats this is about

That certainly explains why they were grey.

I dont understand why two were okay and two not as they were all processed in the smae way and package ......  ???
Nigel Ball
Nantwich, Cheshire, United Kingdom

Takahashi FSQ-106 at f/8, f/5 and f/3.6 on AP900, Nikon 28 mm and 180mm f/2.8
SBIG STL-11000M, Astrodon LRGB, 5nm Ha
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Offline Harry page

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Re: Request for assistance
« Reply #16 on: 2010 September 17 10:26:32 »
Hi

I am afraid these packages do not give you a preferance in which way to save fits files ( AA4 does it as well  :yell:) and saves them anyway it likes , based on what I do not know !!!!!!!!!!!!


Harry

some good data by the way  ;)
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Offline Nigel Ball

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Re: Request for assistance
« Reply #17 on: 2010 September 17 11:02:54 »
some good data by the way  ;)

I suspected it was  ........  :D
Nigel Ball
Nantwich, Cheshire, United Kingdom

Takahashi FSQ-106 at f/8, f/5 and f/3.6 on AP900, Nikon 28 mm and 180mm f/2.8
SBIG STL-11000M, Astrodon LRGB, 5nm Ha
ST-10XME, Astrodon HaLRGB
www.nigelaball.com

Offline Nigel Ball

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Re: Request for assistance
« Reply #18 on: 2010 September 18 05:52:03 »
Some fits files play havoc with PI and 2 of yours are these  please read http://pixinsight.com/forum/index.php?topic=2184.0  to see whats this is about


Thinking about this overnight (as you do) it makes sense, I was just too dumb to interpret why the peak was in the middle of the histogram  :-[

What I did was load the rgb  files as above and combine them , then save them in Pi 32 bit mode  ;D  All safe from there

Which of the 32 bit modes do I use?

- 32 bit floating point
- 32 bit unsigned integer
- 32 bit signed integer

From what you've said above I suspect it will not be the 32-bit signed integer

Nigel
Nigel Ball
Nantwich, Cheshire, United Kingdom

Takahashi FSQ-106 at f/8, f/5 and f/3.6 on AP900, Nikon 28 mm and 180mm f/2.8
SBIG STL-11000M, Astrodon LRGB, 5nm Ha
ST-10XME, Astrodon HaLRGB
www.nigelaball.com

Offline Harry page

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Re: Request for assistance
« Reply #19 on: 2010 September 18 08:29:10 »
Hi

Floating does it for me  O:)

Sorry not had time for a good look , but after combination I would use the background neutralization tool to enable a better view of your image , then personally do the colour calibration ( up to you though )
Then of course onto DBE  :D


Regards Harry
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Offline Nigel Ball

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Re: Request for assistance
« Reply #20 on: 2010 September 18 10:12:32 »
Hi

I actually did those steps last night but the stars are looking like multicoloured halos when I do the Auto Stretch in the STF tools. So I'm obviously doing something wrong

Nigel
Nigel Ball
Nantwich, Cheshire, United Kingdom

Takahashi FSQ-106 at f/8, f/5 and f/3.6 on AP900, Nikon 28 mm and 180mm f/2.8
SBIG STL-11000M, Astrodon LRGB, 5nm Ha
ST-10XME, Astrodon HaLRGB
www.nigelaball.com

Offline Harry page

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Re: Request for assistance
« Reply #21 on: 2010 September 19 11:25:22 »
Hi

Right time to have a look  8)


Can you post a image of the dodgy stars you are having


Harry
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Offline Nigel Ball

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Re: Request for assistance
« Reply #22 on: 2010 September 19 12:31:34 »
Can you post a image of the dodgy stars you are having

Nigel Ball
Nantwich, Cheshire, United Kingdom

Takahashi FSQ-106 at f/8, f/5 and f/3.6 on AP900, Nikon 28 mm and 180mm f/2.8
SBIG STL-11000M, Astrodon LRGB, 5nm Ha
ST-10XME, Astrodon HaLRGB
www.nigelaball.com

Offline Harry page

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Re: Request for assistance
« Reply #23 on: 2010 September 19 14:25:27 »
Hi

You are right dodgy they are  >:D

I will do a small demo on what I do tommorow , don't know whats happening to your stars though


Harry
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Offline Harry page

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Re: Request for assistance
« Reply #24 on: 2010 September 20 14:52:09 »
Hi

Done a very rough vid on a basic process of you rgb  Click on nigel at the bottom to download http://www.harrysastroshed.com/pixinsighthomeinter.html


Sorry for the stumbling  I am sure you can do better

Harry
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Offline Silvercup

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Re: Request for assistance
« Reply #25 on: 2010 September 21 12:42:23 »
Hi Nigel:

You have a good data of Iris neb.

This my try:



Basically, I have done the same steps as Harry's video. It is very important after BackgroundNeutralization apply a DBE to eliminate gradients in the left zone.

Last step was to run my script "BackgroundEnhance" to highlight dust zones, desaturation of stars with a manual starmask and neutralization of dust zones with curves and SCNR in green channel.

I am sure you can do better, too.

Best, Silvercup

Offline Nigel Ball

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Re: Request for assistance
« Reply #26 on: 2010 September 21 13:01:33 »
Thanks Harry

Just been through your video - EXCELLENT - thank you. I now have a decent RGB image  :D

Silvercup

I run your script on the finished RGB data with the default settings and got quite a decent result.

Nigel

PS Haven't added the Luminance in yet ..... tried to but it all went a bit Pete Tong  :-[
« Last Edit: 2010 September 21 13:58:33 by NigelB »
Nigel Ball
Nantwich, Cheshire, United Kingdom

Takahashi FSQ-106 at f/8, f/5 and f/3.6 on AP900, Nikon 28 mm and 180mm f/2.8
SBIG STL-11000M, Astrodon LRGB, 5nm Ha
ST-10XME, Astrodon HaLRGB
www.nigelaball.com

Offline Niall Saunders

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Re: Request for assistance
« Reply #27 on: 2010 September 22 16:15:22 »
Harry,

Just a question with reference to your video that you put together for Nigel . . .

When you applied the last Histo, were you aware that you still had the Luminance Mask in place? Was this intentional, or an oversight?

This is not meant as any form of criticism, just that Nigel (and perhaps others) might not have been aware that the applied Histo stretch, because it was being applied through the Luminance Mask, was therefore only really being applied to the brightest areas of the image.

Obviously, if it had been your intention to give the whole image a 'tweak up', then the mask would at least have had to be 'disabled', if not 'removed' because it would not be needed again.

This is quite an important point - it is VERY EASY to forget that you have a mask in place, and then you can spend ages trying to apply processes that you THOUGHT you understood, yet they suddenly seem to no longer work the way that they used to :yell:

There is no simple reminder in PI to tell you that a given image is under the influence of a mask - maybe the 'top bar' of a masked image needs to change colour, say from the usual 'blue' to, for example, 'red'. Does anybody else have any opinion here?
Cheers,
Niall Saunders
Clinterty Observatories
Aberdeen, UK

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