I am interested in making histograms of data like aspect ratios generated by CCDInspector to better identify outliers. Is there any way to get access to columns of data generated by CCDI?

marshall edgell

Hi Marshall,

If I understand what you are asking for, you can get a complete table of the values computed by CCDI exported for use in Excel or other software.

To do this:

• Load up all the desired images
  
• choose the columns you want exported by selecting them through the Settings->Display Columns menu
  
• then click Measure All
  
• When done, click on File->Copy Report To Clipboard menu

Then, you can paste the whole table into Excel or other analysis or word-processing software of your choice.

The table values are tab-separated, and first row contains column headers. Here's an example I just created from a set of recently acquired images:

Image File	FWHM	Aspect (%)	Stars Used	Background (adu)	Contrast Ratio	Altitude	Date & Time	Collimation	Curvature	
m57.00000506	2.36"	19	467	881	49.72	+80º 04' 39"	05/22/09 03:18:20	11.1"	62.3	
m57.00000507	2.23"	19	524	875	50.46	+81º 31' 18"	05/22/09 03:28:54	9.8"	52.2	
m57.00000508	2.05"	21	589	869	51.22	+82º 38' 15"	05/22/09 03:39:30	8.7"	52.1	
m57.00000509	2.23"	14	513	876	50.22	+83º 14' 43"	05/22/09 03:50:04	8.8"	52.2	
m57.00000510	2.16"	14	527	900	50.83	+83º 12' 30"	05/22/09 04:00:38	11.0"	54.9	

Hope this helps.

Regards,

-Paul

This message has been edited. Last edited by: Paul Kanevsky,

By the way, starting with CCDI v2.0 you can set the desired limits on aspect ratio, FWHM, and other measured values in the Limit Alert dialog. All images exceeding the limits specified will be automatically highlighted in red for easier identification.

Regards,

-Paul

Thanks. I'll give that a try.

The reason to do a histogram is to provide some data to help make a more informed decision about where to set the limits.

marshall