تقرير
Method for tilt correction of calibration lines in high resolution spectra
| العنوان: | Method for tilt correction of calibration lines in high resolution spectra |
|---|---|
| المؤلفون: | Das, Tanya, Banyal, Ravinder K. |
| المصدر: | Applied Optics, Vol. 60, Issue 31, pp. 9906-9914, 2021 |
| سنة النشر: | 2021 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Instrumentation and Methods for Astrophysics |
| الوصف: | Technological advancement has led to improvement in the design capabilities of astronomical spectrographs, allowing for high precision spectroscopy, thereby expanding the realms of observational astronomy. High-resolution spectrographs use Echelle grating that operates in higher orders, giving more detailed spectra. Often, curvature and tilted lines are observed in the spectra, arising due to the design trade-offs of the respective spectrographs. Removal of these artifacts can help avoid wrong flux calculation and line centroid position misinterpretation, which can aid in a better prediction of the wavelength calibration model. In this paper we present a post-processing technique that we developed to correct the observed curvature and tilt in the spectra. We have demonstrated the correction technique on Fabry-Perot and Th-Ar calibration spectra obtained from Hanle Echelle Spectrograph (HESP), Magellan Inamori Kyocera Echelle (MIKE) spectrometer and X-shooter spectrograph. Comment: 9 pages, 18 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1364/AO.434198 |
| URL الوصول: | http://arxiv.org/abs/2111.00751 |
| رقم الأكسشن: | edsarx.2111.00751 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1364/AO.434198 |
|---|