AstroImageJ - Re: Multi-Plot Problem during Multi-Aperture process

AstroImageJ

Re: Multi-Plot Problem during Multi-Aperture process

Posted by wvinton on Mar 18, 2014; 11:48pm
URL: http://astroimagej.170.s1.nabble.com/Multi-Plot-Problem-during-Multi-Aperture-process-tp136p143.html

Karen:

The journey continues...

I have been playing a bit with things (actually analyzing a series of images of SN 2014J taken on 1/23/2014 - right when it lit up) and the multi-plot was working fine, with one exception. The stack has nine images, but only five data points were being plotted. I tried re-scaling window - still only five data points, every other one. And, none of the comp stars were plotted. I'd show you screen shots, but...

The science image now disappears when I click multi-aperture (adjacent to the AIJ image window). The stack opens normally, then when I click on the multi-aperture icon, the multi-aperture measurements window opens and the image disappears. It's still listed in the "Window" drop down, but the window itself is not to be found anywhere.

I did do something that might have led to the issue. I couldn't get the "align the stack using apertures" command to work (it seemed to scanning through stack trying to align things before I had selected any apertures), so I opened the stack in a generic version of ImageJ (vs. 1.48, 64 bit), used an align stack procedure, saved the image sequence in FITS form, closed the generic ImageJ and then opened AstroImageJ. To my best recollection, that's when problem began.

Additonally, in my explorations, I have found that if instead I now click on the multi-aperture icon on the AIJ bar after opening the stack, the error window below appears. (I don't know if this was happening prior to the reappearance of the disappearing window problem.)

So, that's where we are at the moment. Whew!

Bill V.

On Tue, Mar 18, 2014 at 6:02 PM, karenacollins [via AstroImageJ] <[hidden email]> wrote:

Hi Bill,

Thanks for reporting back. That is great news! If you haven't found it yet, I would recommend going through section 10 in the latest (but still not complete) user guide at:
http://www.astro.louisville.edu/software/astroimagej/guide/AstroImageJ_User_Guide_2.1.4.pdf

Section 10 provides a step-by-step guide on how to do differential photometry on a stack of images and includes an example of how to use the Multi-plot controls. I hope to improve the user guide over the coming months.

Also, make sure "Show tooltips help" in Multi-plot_Main->Preferences is enable. With this option enabled, mousing over most of the control knobs in the user interface will cause a small help window to pop up. In the "Multi-plot Y-data" panel, be sure and also check the labels at the top of the window for tooltips help. To keep the tooltips displayed longer, move the mouse around slowly over the control.

If you have specific questions that are not addressed by the two ideas above, post them here and I will try to help out.
Karen
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Bill Vinton

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