Astronomy Asked by ourdays on December 14, 2021
I want to re-align the image data of filter F658N to GOODS-South catalog with TweakReg. I used the external catalog of image data generated by SExtractor as input catalog (threshold is set to 5.0) because of the artifacts. Although I can find some matches by visual check using ds9,the TweakReg can’t detect the matches between the input catalog and the reference catalog to align my images to the GOODS-S catalog.
I have tried different searchrad and threshold, but it just didn’t work.
This problem confused me some days, I really need help. Thank you in advance!
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