User:Mu301Bot/nelm

This page and subpages are part of an experiment on incorporating real-time data in a learning resource. A bot automatically updates the subpages which include new measurements from a sensor once per hour. The image and image caption are usually updated once per day. See SkyCam for more info.

The data is collected from Ladd Observatory in Providence (41.83889°N, -71.39917°W)



Archived example images
Depending on the local weather the image might be completely blank due to thick cloud cover or it might show an image of stars. A complete list of uploaded images can be found in the image file history. Here are explanations of a few selected images.

Overcast with raindrops on camera window. Mostly cloudy. Clear with stars but hazy.
 * 2018-01-13
 * 2018-01-10
 * 2018-01-12
 * 2018-01-17
 * 2018-01-16
 * 2018-01-11
 * 2018-01-14

Sky Camera image info
Key to User:Mu301Bot/nelm/image
 * Last image filename = the raw FITS data file name
 * Exposure started = timestamp of raw data file (UTC)
 * Image updated = timestamp of upload to webserver (Eastern Time Zone EST/EDT)
 * Image source: Sky Camera

Zenith Sky Brightness data
Key to User:Mu301Bot/nelm/data
 * mpsas = visual magnitude per square arc second
 * nelm = approximate naked eye limiting magnitude (unused)
 * source = Sky Brightness Meter
 * date and time = timestamp of data point (Eastern Time Zone EST/EDT)
 * temperature = internal temperature of sensor

Note: new data is only collected when the sky is dark enough.

Zenith Sky Brightness data
date     time      mpsas    temperature