fockez

On an old computer, comtypes 1.1.4 and numpy 1.14.2 on the same windows 10, works fine.

Comfirm the python 3.7.6 cause the problem. Downgrade to 3.7.5 solves it.

The image looks like the exposure time is lower than 1ms

ICX267AL The product link is https://www.sxccd.com/product/oculus-all-sky-camera-180/

[1.zip](https://github.com/astropy/reproject/files/4431990/1.zip) I just do a single call of reproject_interp for test on 4k image and attatch the cProfile log. I wonder if there is optimize space. Thanks. Also, I test...

Because the wcs I use doesn't have SIP AP and BP coeffcient, so the world2pix is obviously slow than pix2world. And more, the round trip pixel to pixel cost two...

I test to disable the round-trip check, the consumption lower from 31.7s to 17.1s. It is a big step. If this only affect in some cases, I think it is...

I added inverse sip coeffcients ap bp to the header, and found that the time is the same. After digging in, it shows that reproject use the wcs.all_world2pix function which...