HDR Comp Question

[Torsinadoc]

I have two sets of Ha (300 and 600s).  They are different because I was working on guiding issues

There is rotation between the two integrated images.  I calibrated and registered to the same reference.  I have two integrated images.  If I run HDRComposition without cropping the rotated areas it will work fine. If I crop the image that is rotated it will not.  I can't remove the gradients without cropping prior to HDR. Could I just integrate them all at the same time (load all into image integration)?  Suggestions?

[pfile]

when you say it will not work, what do you mean? error message? or garbage result?

rob

[Torsinadoc]

I figured it out. Thanks.  I needed to match the crop on the other image. 
 
First image is integration of all lights
Second is HDR of same batch

Just STF

[pfile]

ok.

for a typical low dynamic range target such as this, you might be better off just integrating all the subs together.  the HDRComposition tool is going to pick and choose data from one or the other image to put in the final, so you're missing out on the higher SNR that the stack would probably give. in fact on this particular data it might only be taking the stars from the 300s stack and putting those in the result.

rob

[Torsinadoc]

Thanks