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UNITOV TSST H-alpha Full Disk Images
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.. contents:: The tiny table of contents

The Hα channel of the TSST is a Daystar SR-127 QT, an achromatic refractor with 127 mm aperture and a focal length of 2667 mm. The telescope features a narrow band filter with a passband of 0.04 nm centered at the Hα line. The filter is a temperature stabilized etalon in collimated configuration, and it is the same filter used in the GONG network for the Hα channel to monitor the chromospheric transients (Giersch, 2013). The Hα channel is equipped with a focal reducer, acting also as a field curvature corrector, to match the Dalsa Pantera 1M60 pixel scale of the MOF channel (2.6 arcsec/pixel). The main goal of this TSST channel is the real time detection of flaring region (Piazzesi et al., 2012; Pötzi et al., 2015, 2018) during the impulsive and flash phases when the intensity reaches its maximum (Benz, 2017). Hα images are extremely important for ground based SWe monitoring (see, e.g. Veronig & Potzi, 2016) and to automatically detect and track structures in the solar chromosphere, as filaments (Bernasconi et al., 2005; Fuller et al., 2005; Bonnin et al., 2013) and prominences (Wang et al., 2010), that can be associated with flare and coronal mass ejections. 

**Providers**:

- **TSST** - source:

  - H-alpha


| **Product Type**: data

| **Status**: Active

| **Creation date**: 2022-04-29T12:32:27+02:00

| **Last Update**: 2023-10-01T12:00:00+02:00

Data Description
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| **Data type**: image

| **Data formats**: - .fits


| **Sample**: ND

Capabilities
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- int2130.1: Product ingestion
- ext2220.1: Standard Visualisation: Web GUI
- ext2220.2: Standard Query: Web GUI
- ext2220.3: Download: Web GUI
- ext2220.4: NRT Visualisation: Web GUI
- ext2230.1: Advanced Visualisation: ASPIS.py
- ext2230.2: Advanced Query: ASPIS.py
- ext2230.3: Download: ASPIS.py

