A New Multi-wavelength Solar Telescope: Optical and Near-infrared Solar Eruption Tracer (ONSET)

Abstract

A new multi-wavelength solar telescope, Optical and Near-infrared Solar Eruption Tracer (ONSET) of Nanjing University, was constructed, being fabricated by Nanjing Institute of Astronomical Optics & Technology and run in cooperation with Yunnan Astronomical Observatory. ONSET is able to observe the Sun in three wavelength windows: He {\small I} 10830 Å, H$\alpha$, and white-light at 3600 Åand 4250 Å, which are selected in order to obtain the dynamics in the corona, chromosphere, and the photosphere simultaneously. Full-disk or partial-disk solar images with a field of 10 arcmin at three wavelengths can be obtained nearly simultaneously. It is designed to trace solar eruptions with high spatial and temporal resolutions. This telescope was installed at a new solar observing site near Fuxian Lake in Yunnan Province, southwest China. The site is located at E102N24, with an altitude of 1722 m. The seeing is stable and of high quality. We give a brief description of the scientific objectives and the basic structure of the ONSET. Some preliminary results are also presented.

9 pages, 5 figures, to be published in Res. Astron. Astrophys. (RAA)

References in corpus (6)

• First Evidence of Coexisting EIT Wave and Coronal Moreton Wave from SDO/AIA Observations
• Large amplitude oscillation of a polar crown filament in the pre-eruption phase
• Do all Flares have White Light Emission?
• SOHO/SUMER Observations of Prominence Oscillation Before Eruption
• The influence of coronal EUV irradiance on the emission in the He I 10830 A and D3 multiplets
• Understanding the white-light flare on 2012 March 9 : Evidence of a two-step magnetic reconnection

Cited by in corpus (20)

• The Chinese Hα Solar Explorer (CHASE) mission: An overview
• Calibration procedures for the CHASE/HIS science data
• The Solar Upper Transition Region Imager (SUTRI) onboard the SATech-01 satellite
• Investigation of white-light emission in circular-ribbon flares
• A Circular White-Light Flare with Impulsive and Gradual White-Light Kernels
• Mini-filament Eruptions Triggering Confined Solar Flares Observed by ONSET and SDO
• Global Coronal Waves
• Dependence of the Length of Solar Filament Threads on the Magnetic Configuration
• Transition from circular-ribbon to parallel-ribbon flares associated with a bifurcated magnetic flux rope
• Observations of a white-light flare associated with a filament eruption
• Material supply and magnetic configuration of an active region filament
• Fine-scale structures and material flows of quiescent filaments observed by New Vacuum Solar Telescope
• Can We Determine the Filament Chirality by the Filament Footpoint Location or the Barb-bearing?
• New Observations of Balmer Continuum Flux in Solar Flares, Instrument Description and First Results
• Grow-up of a Filament Channel by Intermittent Small-scale Magnetic Reconnection
• Methodology for In-flight Flat-field Calibration of the Lyman-alpha Solar Telescope (LST)
• $\mathrm{H}\alpha$ chromospheric activity of F-, G-, and K-type stars observed by the LAMOST Medium-Resolution Spectroscopic Survey
• Radiative Hydrodynamic Simulations of the Spectral Characteristics of Solar White-light Flares
• High-resolution Observations of a C9.3 White-light Flare and Its Impact on the Solar Photosphere
• Modelling the magnetic structure of a large-scale horse-shoe-like filament in a decaying and diffuse active region