Vaira Ranch Web Cam

The web camera at the Vaira Ranch site was installed at the beginning of November, 2005. The camera is a D-Link DCS-900 (hardware Version: A1, Firmware Version: 2.20).
10/100Mbps Fast Ethernet Network Access
1/3 CMOS Digital VGA Sensor
24-bit RGB color
Resolution: 640x480, 320x240
5 Level User Selectable JPEG Compression Rate
Frame Rate*: 1, 5, 7, 15, 20 or Auto
Brightness Control
Contrast Control
Hue Control
Shutter: 1/60 ~ 1/15000 sec
Minimum Illumination: 2.5lux@f1.4, 3000K color
Fixed Lens
Focus: 20cm ~ infinity
Manual Focus
Aperture: F 1.8
Focal Length: 6.0 mm
Power Supply: DC 5V/2.5A
Power Requirements: 4.5Watt (900mA x 5V)
Operating Temperature: 5 ~ 40C
Storage Temperature: -25 ~ 50C
Humidity: 5% ~ 95% ( non-condensing)
Size: 2.5 (L) x 2.5" (W) x 2.75" (H)
Weight : 0.61 lbs
Initially the camera was pointed at the ground below the radiation sensors mounted on the tower. A bit of the aluminum tower was visible on the left edge of the image and a strand of barbed wire ran across the bottom of the photo. On November 17, 2005 the image was adjusted to the right to exclude the bit of tower on the left edge. On June 29, 2006 the camera was move to view the flux tower and its footprint. In this location the image includes the flux tower on its right edge and sees in the dominant upwind direction about 115m to a stand of trees. The camera is point at about 314 degrees from true north and mounted about 1.5m above the ground. Images are collected hourly intervals around noon local standard time (UTM-8). Images were originally 320x240 pixels but this was increased to 640x480 on October 10, 2007. The original camera died on March 23, 2010 and was replaced with the same make and model on April 13, 2010.

Initial image Nov 4, 2005.

Slight move to the right Nov 17, 2005.

Move to view tower and footprint Jun 29, 2006.

Images enlarged from 320x240 to 640x480 Oct 17, 2007.

35% gray panel added to lower left corner Feb 10, 2009.

Approximate field of view.
Below is a list of downloadable zip archive files. Each file contains all of the photos from the indicated year and month. The archive file name format is:

Where yyyy is the four digit year and mm is the two digit month.

Files within the archives have the following file name formats:


Where yyyy is the four digit year, dd is the two digit day of the month (01-31), mm is the two digit month (01-12), and time is a one or two digit hour followed by a two digit minute (902 or 1301).