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Instruments

Instruments

Telescope:

45 cm, f/15 Ritchey-Chrétien Cassegrain

Spectrographs:

Echelle (115 nm to 198 nm and 180 nm to 320 nm)

Apertures:

3" and 10" by 20" image quality 2"

Resolution:

1.8×104  corresponding to 0.008 nm @ 140 nm (17 km s-1)

 

1.3×104 corresponding to 0.017 nm @ 260 nm; (20 km s-1)

 

27° in low resolution mode @ 150 nm

 

40° in low resolution mode @ 270 nm

Cameras:

 

SWP (115-197 nm)

sensitivity: 2×10 -15 ergs s-1 cm-2 Å-1

LWP (175-330 nm)

sensitivity: 1×10-15 ergs s-1 cm-2 Å-1

LWR (175-330 nm)

sensitivity: 2×10-15 ergs s-1 cm-2 Å-1

SWR

Never operational

   

FES #1

Fine-Error-Sensor #1 has not been used in operations.

FES #2

Fine-Error-Sensor #2 has been used for fine guidance throughout the mission. It has also been important as a photometer to measure the optical brightness of the sources observed. In 1991 scattered light entering the telescope required a revision of guidance procedures and affected its photometric performance.

Last Update: 1 September 2019
20-Sep-2019 16:42 UT

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Shortcut URL

https://sci.esa.int/s/89gJ5Ow

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