Tutorial NGC_6946 - Defect Map?

Tony Benjamin

Hi Adam,

Just starting going through the vids for this tut - but in the downloaded files there is no Defect_Map? 

Of course, you then get the columns in the integrated image.

Do you have a link to it?

Tony

BlockHead

Hmm... indeed that is true. You can make the defect map yourself (there are a handful of columns). 

If I had made the project file available instead of the RAW data, then you would get it.

I will work on uploading the files to here:

https://www.adamblockstudios.com/articles/NGC6946_Download

Thanks for catching that! Not a showstopper, but true enough.

-the Blockhead

BlockHead

I decided to do something different. Instead of uploading a defect map image... how about just generate it with Pixel Math. Here is the expression:

***Bin 2x2***

x = x();

iif(x == 119 || x == 190 || x == 468 || x == 736 || x == 794 || 

x == 819 || x == 824 || x == 1335 || x == 1423 || x == 1728 ||

x == 1871,0,1)

symbols x

Specify an image size of 2048x2048

***Bin 1x1***

x = x();

iif(x == 239 || x == 294 || x == 305 || x == 380||

x == 584 || x == 794 || x == 860 || x == 905 ||

x == 937 || x == 1386 || x == 1472 || x == 1638 ||

x == 1649 || x == 2268 || x == 2280 || x == 2472 ||

x == 2670 || x == 2934 || x == 3493 || x == 3742,0,1)

symbols  x

Specify an image size of 4096x4096

The above will create the bin 2x2 and 1x1 Defect (column) map. 

I included this expression on the page that has the version for the first lesson in the series (where I use Defect Map). 

https://www.adamblockstudios.com/articles/NGC6946_01

-the Blockhead