]>The STELLA Robotic Observatory on Tenerife : Figure 1
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Figure 1: An example spectrum from the SES. What is shown is the 𝑉 = 9 . 0  mag K0III RS CVn binary XX Triangulum. Exposure time was 1 hour, spectral resolution is 55,000, an 𝑆 / 𝑁 ratio of 1 2 0 ∶ 1 was achieved. The top panel shows the full spectrum (note the increasing order gaps redwards of 725 nm). The lower panels zoom into the Ca II H&K region, Balmer Hα, and one of the Ca II infrared triplets.