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StellarCartography / pydis

DEPRECATED: Check out PyKOSMOS!
https://github.com/jradavenport/pykosmos
MIT License
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Improve Sky Subtraction #21

Open jradavenport opened 9 years ago

jradavenport commented 9 years ago

Right now sky subtraction works very locally, pixels right above/below the aperture trace.

Since wavelength space is bent/tilted, not perfectly vertical along y-axis, if you increase sky window sizes you get worse fits. This is very bad, as the sky S/N should get better as the windows get larger, not the other way around!

Fix this by doing a 2-D (surface) interpolation between the sky windows?

jradavenport commented 8 years ago

This is also a perfect example of a test data set being required...

jradavenport commented 8 years ago

Have been working on this some in a new branch, but so far is not stable... https://github.com/jradavenport/pydis/tree/better-sky