Publication Date:
2019-07-13
Description:
The orbital motion of the three spacecraft that make up the eLISA Observatory constellation causes long-arm line of sight variations of approximately one degree over the course of a year. The baseline solution is to package the telescope, the optical bench, and the gravitational reference sensor (GRS) into an optical assembly at each end of the measurement arm, and then to articulate the assembly. An optical phase reference is exchanged between the moving optical benches with a single mode optical fiber (backlink fiber). An alternative solution, referred to as in-field pointing, embeds a steering mirror into the optical design, fixing the optical benches and eliminating the backlink fiber, but requiring the additional complication of a two-stage optical design for the telescope. We examine the impact of an in-field pointing design on the scattered light performance.
Keywords:
Astrophysics
Type:
GSFC-E-DAA-TN67100
,
Journal of Physics: Conference Series (ISSN 1742-6588) (e-ISSN 1742-6596); 840; 012015|11th International LISA Symposium; Sep 05, 2016 - Sep 09, 2016; Zurich; Switzerland
Format:
application/pdf
