2014/12/12 by J. Wang, Jiliang Wang Jiliang Wang, Wang, J. +29
Engineering · Physics and Astronomy · #Calibration and Measurement Techniques #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Planetary Science and Exploration #Spacecraft and Cryogenic Technologies #astro-ph.IM
paper · pdf · doi:10.48550/arxiv.1412.3870
To appear in RAA, 9 pages, 3 tables, and 6 figures
arxiv created 2014/12/12 · openalex publication_date 2014/12/12 · arxiv updated 2014/12/15 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
We reported the photometric calibration of Lunar-based Ultraviolet telescope (LUT), the first robotic astronomical telescope working on the lunar surface, for its first six months of operation on the lunar surface. Two spectral datasets (set A and B) from near-ultraviolet (NUV) to optical band were constructed for 44 International Ultraviolet Explorer (IUE) standards, because of the LUT's relatively wide wavelength coverage. Set A were obtained by extrapolating the IUE NUV spectra (λ<3200Å) to optical band basing upon the theoretical spectra of stellar atmosphere models. Set B were exactly the theoretical spectra from 2000Å to 8000Å extracted from the same model grid. In total, seven standards have been observed in 15 observational runs until May 2014. The calibration results show that the photometric performance of LUT is highly stable in its first six months of operation. The magnitude zero points obtained from the two spectral datasets are also consistent with each other, i.e., zp=17.54±0.09mag (set A) and zp=17.52±0.07mag (set B).