All Figures

$\begin{figure} \par\mbox{\includegraphics[width=43mm,height=43mm]{6351fg01.eps} ... ...includegraphics[width=8cm,clip]{6351fg01bis.eps}\hspace*{4mm}} \par\end{figure}$ Figure 1: Panels a) and b) show the Mask 1 and Mask 2 designs. The transmission through the black and white regions is 0 and 1, respectively. The diameter of the circumscribed circle to the transmissive part is 2 mm. Panels c) and d) show the expected (theoretical) PSFs for Masks 1 and 2. The respective diagonal profiles are shown in Fig. 5. The scale bar is 20 $\lambda / D$ .
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In the text

$\begin{figure} \par\includegraphics[width=80mm]{6351fg05.eps} \end{figure}$ Figure 2: Photographs showing the fabricated Mask 1 ( left) and Mask 2 ( right) on BK 7 substrates. The diameter and thickness of the substrates is 30.0 mm and 2.0 mm, respectively. The translucent cases beneath the substrates are used to transport the devices.
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In the text

$\begin{figure} \par\includegraphics[width=90mm]{6351fg06CMJN.eps} \end{figure}$ Figure 3: Optical configuration for the experiment. All the optical devices were set on a table with air suspension in a dark room with an air cleaning system flowing from the top of the room onto the optical table. The air flow was either turned on or off to check its influence on the coronagraphic performance (see text for details).
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In the text

$\begin{figure} \par\includegraphics[width=90mm]{6351fg07.eps} \end{figure}$ Figure 4: Observed coronagraphic images. Panels a) and c) show images including the core of the PSF for Masks 1 and 2. The tail below the bright peak is due to a readout effect. Panels b) and d) are images of the dark region obtained with a mask with a square aperture. The prickle like pattern below the square aperture in b) is the result of reflection by the support structure of the aperture for Mask 1. The scale bar is 10 $\lambda / D$ .
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In the text

$\begin{figure} \par\includegraphics[width=75mm, height=62mm]{6351fg08CMJN.eps}\\ [2mm] \includegraphics[width=75mm, height=62mm]{6351fg09CMJN.eps} \end{figure}$ Figure 5: Diagonal profiles of the coronagraphic image for Mask 1 a) and Mask 2 b). Observed and theoretical profiles are shown as well as the theoretical Airy profile. Each profile is normalized by the peak intensity in each image. For Mask 2, the result of simulation with the observed mask defects shown in Fig. 6 is also presented.
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In the text

$\begin{figure} \par\mbox{\includegraphics[height=45mm]{6351fg10.eps} \includegraphics[height=45mm]{6351fg11.eps} } \end{figure}$ Figure 6: Panels a) and b) show the defects in Mask 2 observed through an optical microscope using reflected light. The darker parts in the images correspond to the transmitted areas. Panel c) Simulated coronagraphic image including the influence of the observed defects. The color scale is the same as in Fig. 1.
Open with DEXTER

In the text

$\begin{figure} \par\mbox{\includegraphics[width=43mm,height=43mm]{6351fg01.eps} ... ...includegraphics[width=8cm,clip]{6351fg01bis.eps}\hspace*{4mm}} \par\end{figure}$	Figure 1: Panels a) and b) show the Mask 1 and Mask 2 designs. The transmission through the black and white regions is 0 and 1, respectively. The diameter of the circumscribed circle to the transmissive part is 2 mm. Panels c) and d) show the expected (theoretical) PSFs for Masks 1 and 2. The respective diagonal profiles are shown in Fig. 5. The scale bar is 20 $\lambda / D$ .
Open with DEXTER

$\begin{figure} \par\includegraphics[width=80mm]{6351fg05.eps} \end{figure}$	Figure 2: Photographs showing the fabricated Mask 1 ( left) and Mask 2 ( right) on BK 7 substrates. The diameter and thickness of the substrates is 30.0 mm and 2.0 mm, respectively. The translucent cases beneath the substrates are used to transport the devices.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=90mm]{6351fg06CMJN.eps} \end{figure}$	Figure 3: Optical configuration for the experiment. All the optical devices were set on a table with air suspension in a dark room with an air cleaning system flowing from the top of the room onto the optical table. The air flow was either turned on or off to check its influence on the coronagraphic performance (see text for details).
Open with DEXTER

$\begin{figure} \par\includegraphics[width=75mm, height=62mm]{6351fg08CMJN.eps}\\ [2mm] \includegraphics[width=75mm, height=62mm]{6351fg09CMJN.eps} \end{figure}$	Figure 5: Diagonal profiles of the coronagraphic image for Mask 1 a) and Mask 2 b). Observed and theoretical profiles are shown as well as the theoretical Airy profile. Each profile is normalized by the peak intensity in each image. For Mask 2, the result of simulation with the observed mask defects shown in Fig. 6 is also presented.
Open with DEXTER

$\begin{figure} \par\mbox{\includegraphics[height=45mm]{6351fg10.eps} \includegraphics[height=45mm]{6351fg11.eps} } \end{figure}$	Figure 6: Panels a) and b) show the defects in Mask 2 observed through an optical microscope using reflected light. The darker parts in the images correspond to the transmitted areas. Panel c) Simulated coronagraphic image including the influence of the observed defects. The color scale is the same as in Fig. 1.
Open with DEXTER