WBPP - ability to manage different image scales?

LES BRAND

I'm trying to integrate / stack a bunch of data from Las Cumbres Observatory archives which is made up from different scopes and instruments so image scales/resolutions can vary for the same target.  I know WBPP can integrate across exposures by changing the exposure tolerance setting but I can't (yet) see a way for it to register and stack across different resolutions / geometries (whereas Astro Pixel Processor can do this)

Any suggestions on how I may address this?

Thanks, Les

BlockHead

It is the geometry that is the issue...the different number of pixels and registering them. 

In addition- there is nuance regarding the fact that when you change the plate scale (and GAIN with different sensors)  you screw around with the flux per pixel so that the there is a scaling factor that needs to be

accounted for when you weight the images.  Alas... few people listen to me on this.

Anyway, I think the best approach is to use WBPP for the initial calibration of images.

Then you can just use StarAlignment "manually" on all of your calibrated data. 

FInally integrate the registered images (do normalization if it helps before integrating).

-the Blockhead

LES BRAND

Thanks Adam. 

The science frames are already reduced / calibrated so I'm simply attempting to stack.  Maybe my lack of understanding but since a version of the StarAlignment process is also embedded in WBPP I assumed it would handle this.  Lesson: never assume.  I will recourse to StarAlignment process and give it a go.  

A further complication is the geometry is not evident without examining the FITS keywords and the fact that although LCO uses a set of standardised scopes / instruments with a set filename structure there are different geometries for the same apparent scope/instrument selection so simply integrating them together throws up all sorts of issues.

Les