Created
April 20, 2016 11:44
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WCS fit pseudo code
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| from astropy import wcs | |
| from scipy import optimize | |
| # this doesn't include the precise function names - just look them up on the astropy wcs website | |
| def fit_func(crval1, crval2, x, y, ra, dec): | |
| w = wcs.WCS(naxis=2) | |
| w.wcs.crval = [crval1, crval2] | |
| ra_wcs, dec_wcs = w.pix_to_world(x, y) | |
| return (ra_wcs - ra)**2 + (dec_wcs - dec)**2 | |
| result = optimize.minimize(fit_func, [200, 45], args=(ref_x, ref_y, ref_ra, ref_dec)) |
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