Changes between Version 54 and Version 55 of RoboDIMM

Timestamp:

Oct 25, 2010, 8:58:53 PM (16 years ago)

Author:

giebink

Comment:

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RoboDIMM

@@ -439 +439 @@
 === __Dual RoboDIMMs August 25, 2010__ ===
 
-The RoboDIMMs were set up south of PS1 so they point at Polaris along the west side of the dome. To get the star to appear just off the widest part of the dome I placed the DIMMs about 20' off the road in the area leading to where the ATST tower used to be located. To locate the DIMM measuring seeing near-dome I moved the DIMM east until the images were blocked by the dome then moved it west until they were just clear. The other DIMM was placed 5' to the west.
+The RoboDIMMs were set up south of PS1 so they point at Polaris along the west side of the dome. To get the star to appear just off the widest part of the dome the DIMMs were placed about 20' off the road in the area leading toward the former location of the ATST tower. To locate the DIMM measuring seeing near-dome the DIMM was moved east until the images were blocked by the dome then moved west until they were just clear. The other DIMM was placed 5' to the west.
 
 During the time the data was collected the dome was basically stationary while the observer, Natalia, was taking pinhole data on the moon. Because the moon was rising the near-dome measurements were made off the surface of the rear shutter.
@@ -451 +451 @@
 === __September 2, 2010__ ===
 
-The "static" RoboDIMM is located approximately near the "C" in the "Reber Circle" label on the site plan you sent me. Locations 1 and 2 are 8' and 16', respectively, NE of of the static location. (BTW, there appears to be location issue with respect to the containers because they're definitely further north.)
+The "static" RoboDIMM is located approximately near the "C" in the "Reber Circle" label on the site plan. Locations 1 and 2 are 8' and 16', respectively, NE of of the static location. (BTW, there appears to be location issue with respect to the containers because they're definitely further north.)
 
 Winds all night were light, <3.5 m/s. Throughout the night both RoboDIMMs and the DNSM were looking at stars high in the sky. The DNSM was pointed at Altair all night. Both RoboDIMMs measured Antares during the data taking at Location 1. Around 6:30 UT some high clouds moved in. I believe this accounts for the degradation in seeing and the lack of DNSM data points. Because the DIMMs, particularly the static one, were struggling to keep their stars on the focal plane both were moved to Altair which was further south.