The geometric distortion on the observed spectrum is found to be negligible which eliminates the need for complex algorithms for aperture extraction.
📌 3 Key Takeaways
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Objective & Hypothesis:An open source collection of computer programs has been developed and presented to the use of researchers to reduce the spectra taken with the multi-object spectrograph spectra used as the focal plane instrument of RTT150 telescope in the Tübitak National Observatory.
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Key Findings & Data:Since the spectrograph has moving parts (i.e. grism, mask) and the pinholes on the mask are located at various locations with respect to dispersion axis, the spectrum produced in the focal plane is exposed to some effects such as order tilts and wavelength shifts.
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Conclusion & Impact:The geometric distortion on the observed spectrum is found to be negligible which eliminates the need for complex algorithms for aperture extraction.
An open source collection of computer programs has been developed and presented to the use of researchers to reduce the spectra taken with the multi-object spectrograph spectra used as the focal plane instrument of RTT150 telescope in the Tübitak National Observatory. Since the spectrograph has moving parts (i.e. grism, mask) and the pinholes on the mask are located at various locations with respect to dispersion axis, the spectrum produced in the focal plane is exposed to some effects such as order tilts and wavelength shifts. A dedicated algorithm has been applied to determine and correct order tilt and wavelength shifts to extract the spectra from different pinholes, which can provide the basis of a pipeline reduction for the Observatory. The geometric distortion on the observed spectrum is found to be negligible which eliminates the need for complex algorithms for aperture extraction.
Bakış, V. (2021). The MOS Reduction Software - MRS. Turkish Journal of Astronomy and Astrophysics, Cilt: 2 Sayı: 1, 21–27. https://ajindex.com/articles/1555456
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