Table 1 System size parameters and optical properties

 Diameter

0.8

1.4

m

 Depth

0.08

0.16

m

 Focal length

0.5

0.77

m

 Total mass

5.1

24.7

kg

 Surface area

0.353

1.41

m²

 Mirror reflectance

0.85

*

 Diameter

0.1

*

m

 Length perpendicular to the aperture

0.20

*

m

 Square sliding tube

0.4–0.6

0.7–0.9

m

 Insulation thickness

0.05

*

m

 Thickness

1.5

*

mm

 Mass

2.34

*

kg

 Surface area

0.079

*

m²

 Intercept factor

0.9

*

 Absorptance

0.8

*

 Diameter

0.12

*

m

 Thickness

6

*

mm

 Mass

0.23

*

kg

 Surface area

0.014

*

m²

 Absorptance

0.01

*

 Transmittance

0.8

*

 Diameter

0.12

m

 Length

0.65

m

 Insulation thickness

0.06

m

 Thickness

3.0

mm

 Mass

8.97

kg

 Surface area

0.26

m²