Astro-comb calibrator and spectrograph characterization using a turn-key laser frequency comb
Abstrak
Using a turn-key Ti:sapphire femtosecond laser frequency comb, an off-the-shelf supercontinuum device, and Fabry-Perot mode filters, we report the generation of a 16 GHz frequency comb spanning a 90 nm band about a center wavelength of 566 nm. The light from this astro-comb is used to calibrate the HARPS-N astrophysical spectrograph for precision radial velocity measurements. The comb-calibrated spectrograph achieves a stability of $\sim$ 1 cm/s within half an hour of averaging time. We also use the astro-comb as a reference for measurements of solar spectra obtained with a compact telescope, and as a tool to study intrapixel sensitivity variations on the CCD of the spectrograph.
Topik & Kata Kunci
Penulis (11)
Aakash Ravi
David F. Phillips
Matthias Beck
Leopoldo L. Martin
Massimo Cecconi
Adriano Ghedina
Emilio Molinari
Albrecht Bartels
Dimitar Sasselov
Andrew Szentgyorgyi
Ronald L. Walsworth
Akses Cepat
- Tahun Terbit
- 2017
- Bahasa
- en
- Sumber Database
- arXiv
- Akses
- Open Access ✓