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No reference image in Pixelmath

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4 replies to this topic

#1 je2000

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Posted 25 September 2021 - 05:37 PM

I am trying to combine mono Ha and OIII images to make a color HOO palette image. I am following endless YouTube tutorials and websites and they all say this is very straightforward. Enter some 3rd grade math. Hit apply.

 

https://jonrista.com...-pixelmath-hoo/

https://thecoldestni...with-pixelmath/

http://www.deepskyco.../PixelMath.html

https://www.lightvor...mbinations.html

 

Parsed 1 PixelMath expression(s).

1 referenced image(s):
OIII:  <* not found *>

Expression #1:
Infix: OIII

 

Am I supposed to type in the entire filename? Is there a way to copy and paste if so? Typing out this...

 

"Gray 1:3 masterLight_Bin_1_Exposure_90_00s_FILTER_O_Mono_integration_registers_DBE|<*new*> 

 

seems excessive.


Edited by je2000, 25 September 2021 - 05:38 PM.


#2 kathyastro

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Posted 25 September 2021 - 05:48 PM

It is expecting to find an image called OIII.  Do you have one?  If the image is a disk file, you need to open it first.  If the image is there, but its name is a PITA to type, use the Expression Editor: you will be able to double-click on the image name.



#3 jonnybravo0311

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Posted 25 September 2021 - 06:59 PM

I am trying to combine mono Ha and OIII images to make a color HOO palette image. I am following endless YouTube tutorials and websites and they all say this is very straightforward. Enter some 3rd grade math. Hit apply.

 

https://jonrista.com...-pixelmath-hoo/

https://thecoldestni...with-pixelmath/

http://www.deepskyco.../PixelMath.html

https://www.lightvor...mbinations.html

 

Parsed 1 PixelMath expression(s).

1 referenced image(s):
OIII:  <* not found *>

Expression #1:
Infix: OIII

 

Am I supposed to type in the entire filename? Is there a way to copy and paste if so? Typing out this...

 

"Gray 1:3 masterLight_Bin_1_Exposure_90_00s_FILTER_O_Mono_integration_registers_DBE|<*new*> 

 

seems excessive.

On that image (yes, the one with the really long name), right click on the left side tab. In the menu that pops up, click "Identifier". Rename from crazy long string to something short like "O" or "O3" or "OIII" or whatever you want. You then use that in your pixel math expression.

 

Another option? When you launch the pixel math process, there's a button called "Expression Editor". Click it and a new window opens. On the right side are all the images currently open and below that list is a list of different operations you can use. Double-click on the image you want to insert into your expression.



#4 jerahian

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Posted 25 September 2021 - 07:01 PM

Your image name is "masterLight_Bin_1_Exposure_90_00s_FILTER_O_Mono_integration_registers_DBE" not "OIII".  If you want it to be OIII, then double click the tab on the left side of the image panel and rename it to OIII.  I can also see from the "<*new*>" portion of the title bar that your image is not saved yet.  When you do actually save that integration image, the "<*new*>" will be replaced with a portion of the actual filename you save it as.



#5 je2000

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Posted 30 September 2021 - 07:31 AM

Man I knew it was simple. Thank you.


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