The STIX Aspect System (SAS): The Optical Aspect System of the 
Spectrometer/Telescope for Imaging X-Rays (STIX) on Solar Orbiter

Warmuth, A.; Önel, H.; Mann, G.; Rendtel, J.; Strassmeier, K. G.; Denker, C.; Hurford, G. J.; Krucker, S.; Anderson, James; Bauer, S.-M.; Bittner, W.; Dionies, F.; Paschke, J.; Plüschke, D.; Sablowski, D. P.; Schuller, F.; Senthamizh Pavai, V.; Woche, M.; Casadei, D.; Kögl, S.; Arnold, N. G.; Gröbelbauer, H.-P.; Schori, D.; Wiehl, H. J.; Csillaghy, A.; Grimm, O.; Orleanski, P.; Skup, K. R.; Bujwan, W.; Rutkowski, K.; Ber, K.

doi:10.1007/s11207-020-01660-w

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

The STIX Aspect System (SAS): The Optical Aspect System of the Spectrometer/Telescope for Imaging X-Rays (STIX) on Solar Orbiter

Authors

Warmuth, A.
External Organizations;

Önel, H.
External Organizations;

Mann, G.
External Organizations;

Rendtel, J.
External Organizations;

Strassmeier, K. G.
External Organizations;

Denker, C.
External Organizations;

Hurford, G. J.
External Organizations;

Krucker, S.
External Organizations;

/persons/resource/anderson

Anderson, James
1.1 Space Geodetic Techniques, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Bauer, S.-M.
External Organizations;

Bittner, W.
External Organizations;

Dionies, F.
External Organizations;

Paschke, J.
External Organizations;

Plüschke, D.
External Organizations;

Sablowski, D. P.
External Organizations;

Schuller, F.
External Organizations;

Senthamizh Pavai, V.
External Organizations;

Woche, M.
External Organizations;

Casadei, D.
External Organizations;

Kögl, S.
External Organizations;

Arnold, N. G.
External Organizations;

Gröbelbauer, H.-P.
External Organizations;

Schori, D.
External Organizations;

Wiehl, H. J.
External Organizations;

Csillaghy, A.
External Organizations;

Grimm, O.
External Organizations;

Orleanski, P.
External Organizations;

Skup, K. R.
External Organizations;

Bujwan, W.
External Organizations;

Rutkowski, K.
External Organizations;

Ber, K.
External Organizations;

External Ressource

No external resources are shared

Fulltext (public)

5003243.pdf
(Publisher version), 2MB

Supplementary Material (public)

There is no public supplementary material available

Citation

Warmuth, A., Önel, H., Mann, G., Rendtel, J., Strassmeier, K. G., Denker, C., Hurford, G. J., Krucker, S., Anderson, J., Bauer, S.-M., Bittner, W., Dionies, F., Paschke, J., Plüschke, D., Sablowski, D. P., Schuller, F., Senthamizh Pavai, V., Woche, M., Casadei, D., Kögl, S., Arnold, N. G., Gröbelbauer, H.-P., Schori, D., Wiehl, H. J., Csillaghy, A., Grimm, O., Orleanski, P., Skup, K. R., Bujwan, W., Rutkowski, K., Ber, K. (2020): The STIX Aspect System (SAS): The Optical Aspect System of the Spectrometer/Telescope for Imaging X-Rays (STIX) on Solar Orbiter. - Solar Physics, 295, 90.
https://doi.org/10.1007/s11207-020-01660-w

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003243

Abstract

The Spectrometer/Telescope for Imaging X-rays (STIX) is a remote sensing instrument on Solar Orbiter that observes the hard X-ray bremsstrahlung emission of solar flares. This paper describes the STIX Aspect System (SAS), a subunit that measures the pointing of STIX relative to the Sun with a precision of ±4′′, which is required to accurately localize the reconstructed X-ray images on the Sun. The operating principle of the SAS is based on an optical lens that images the Sun onto a plate that is perforated by small apertures arranged in a cross-shaped configuration of four radial arms. The light passing through the apertures of each arm is detected by a photodiode. Variations of spacecraft pointing and of distance from the Sun cause the solar image to move over different apertures, leading to a modulation of the measured lightcurves. These signals are used by ground analysis to calculate the locations of the solar limb, and hence the pointing of the telescope.