Closed HironaoMiyatake closed 11 years ago
rmjarvis
commented
11 years ago The trefoil for DES is huge, so that makes sense. Aaron Roodman goes up to Zernicke order 10 or 11, the last one being spherical, which I think we already have in OpticalPSF. Certainly trefoil is more important in the DES donuts than spherical, so if we include spherical, we should probably also include trefoil.
HironaoMiyatake
commented
11 years ago Yes, the trefoil is also huge for other cameras. I hope this will improve the approximation of realistic optics by the OpticalPSF.
On 2013/04/10, at 13:25, Mike Jarvis notifications@github.com wrote:
The trefoil for DES is huge, so that makes sense. Aaron Roodman goes up to Zernicke order 10 or 11, the last one being spherical, which I think we already have in OpticalPSF. Certainly trefoil is more important in the DES donuts than spherical, so if we include spherical, we should probably also include trefoil.
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barnabytprowe
commented
11 years ago Agree, the trefoil was suggested on an email conversation with Hironao... And the suggestion came directly from eyeballing the ZEMAX model, seeing it looked like a Mercedes Benz sign, and from that conversation we had with Aaron Mike!
Best regards,
Barney
Barnaby Rowe Postdoctoral Research Associate
Department of Physics & Astronomy University College London Gower Street London WC1E 6BT United Kingdom
On 10 Apr 2013, at 10:32, Hironao Miyatake wrote:
Yes, the trefoil is also huge for other cameras. I hope this will improve the approximation of realistic optics by the OpticalPSF.
On 2013/04/10, at 13:25, Mike Jarvis notifications@github.com wrote:
The trefoil for DES is huge, so that makes sense. Aaron Roodman goes up to Zernicke order 10 or 11, the last one being spherical, which I think we already have in OpticalPSF. Certainly trefoil is more important in the DES donuts than spherical, so if we include spherical, we should probably also include trefoil.
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rmandelb
commented
11 years ago Closing #390.
There is a discrepancy between GalSim optical PSF based on 3rd order aberration and ZEMAX output. By comparing them by eyes and also from suggestions by DES optics people, adding trefoil to optical PSF might make the discrepancy small. The trefoil is the next order of spherical in Zernike polynomials;