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mmirs_qrp: Work with MOS data with bright=True #29

@astrochun

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@astrochun

Some testing has been done on mmirs_qrp with MOS data. It does work with bright=False (using dithering information in FITS header to shift and coadd).

It may work with bright=True; however, this highly depends on its ability to identify the bright star in each frame (Note: there are multiple bright stars in MOS typically). This might work for some cases.

Ideally, it would be better to find bright targets from a median calculation along the spatial direction and then compute the shifts using the FITS dithered information as prior. Then the code could be improved to compute FWHM and transparency with each bright object.

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