Make synthetic master flat image

[Astrofriend]

Hi,
Now when I developing my macros I use for AstroImageJ I need some more plugins. One of them is something to make a synthetic master flat with.

I will use them to old astrophotos where I not have the telescope or camera left. My old flat images are of bad quality also and wrong. I also have a lot of dustproblem when calibrating with flats.

You can read about it here where I have some images that explain:
http://www.astrofriend.eu/astronomy/tutorials/tutorial-flat-synthetic/01-tutorial-flat-syntethic.html

It's far from finished, I just want to tell about what's going on.

To do this I need JAVA knowledge which I don't have, but got a new friend who has it.

/Lars

[Astrofriend]

Now there is a Beta of the needed plugin to AstroImageJ to make a synthetic masterflat. Also the Excel sheet is updated where you find the needed parameters. I increased the polynomial to include a fourth degree also.

Here it is, see bottom at first page:
http://www.astrofriend.eu/astronomy/tutorials/tutorial-flat-synthetic/01-tutorial-flat-syntethic.html

At page two there is an attempt to make this flatfield image with these tools.

/Lars

[Astrofriend]

Hi,
I have now used the utility to make synthetic flats and it works fine for me.

I updated the tutorial to make a bit easier to follow how to do it:
http://www.astrofriend.eu/astronomy/tutorials/tutorial-flat-synthetic/01-tutorial-flat-syntethic.html

Still very primitive, but it works if someone find it intereting.

/Lars

[Astrofriend]

I have made some update of my tools that belong to AstroImageJ, I also moved them to a new page where all of them are collected:

http://www.astrofriend.eu/astronomy/tutorials/tutorial-aij-download/01-tutorial-aij-download.html


/Lars

[kamayok3]

Hi,

Unable to run the Flatfield plugin.

java.lang.UnsupportedClassVersionEr ror: Flat/Flatfield_ : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1( Native Method)
at java.lang.ClassLoader.defineClass(U nknown Source)
at java.security.SecureClassLoader.def ineClass(Unknown Source)
at java.net.URLClassLoader.defineClass (Unknown Source)
at java.net.URLClassLoader.access$100( Unknown Source)
at java.net.URLClassLoader$1.run(Unkno wn Source)
at java.net.URLClassLoader$1.run(Unkno wn Source)
at java.security.AccessController.doPr ivileged(Native Method)
at java.net.URLClassLoader.findClass(U nknown Source)
at java.lang.ClassLoader.loadClass(Unk nown Source)
at java.lang.ClassLoader.loadClass(Unk nown Source)
at ij.IJ.runUserPlugIn(IJ.java:183)
at ij.IJ.runPlugIn(IJ.java:152)
at ij.Executer.runCommand(Executer.jav a:127)
at ij.Executer.run(Executer.java:64)
at java.lang.Thread.run(Unknown Source)

[Astrofriend]

Hi,
I talk to my friend, he also think it has something to do with the Java installation.

Is Java updated to latest version and for 64-bit ?

/Lars

[kamayok3]

Yes, I solved that by pointing AstroImageJ to the correct Jave executable file.

[Astrofriend]

Great !

You have to do this everytime Java update to a new version I have noticed.

/Lars