GLOBE at Night

View summary of data submitted from this machine

1 When did you make your observations?

If needed, change the observation date and time using the current date and time format, below, as an example.

Switch to Nighttime version.

2 Where did you make your observations?

Use the map below to help you find the latitude and longitude of your location when you made your observations

Type the street address, the common name, or the latitude and longitude (in decimal degrees) of your location into the text box & click Map It!. Refine your location by zooming in, scrolling and tapping the map.

If you have the Latitude and Longitude in Degrees (°), Minutes (') and Seconds (") (DMS), use our conversion tool to convert them to decimal degrees and map the location.

When your location is correct, click the checkbox.

Location correct:

Latitude:   
Longitude:   

Country:

US Street Address Examples:
1850 Table Mesa Drive, Boulder, CO
950 N. Cherry Ave., Tucson, AZ

International Street Address Examples:
18 de Septiembre 2222, Arica, Chile
950 Av Arturo Prat Chacon, Iquique, Chile
Gütergotzer Straße 38, Berlin, Germany

US Common Name Examples:
Truman High School, Taylor, MI
Kitt Peak National Observatory
White House

International Common Name Examples:
Cadaques, Espana
La Paz, Baja California Sur, Mexico
Tour Eiffel, Paris

If you know the Latitude and Longitude (perhaps you brought along a GPS and noted where you were), you can enter that into the box (Latitude first, separated with a comma). You must use decimal degrees.

Enter your coordinates below. Remember that Latitude ranges from -90° to 90°, and Longitude from -180° to 180°. And don't forget to let us know if you are in the North or South (latitude) or East or West (longitude).

   Latitude: ° ' "

Longitude: ° ' "

Click Calculate below, & then Close to map your location in decimal degrees.

3 How dark was the sky that night?

To select the magnitude chart that most closely resembles what you see, click the thumbnail images below the larger magnitude chart. This will load sky views at various magnitudes. The currently displayed magnitude chart is highlighted on the corresponding thumbnail. When you have found the chart that most closely resembles your view of the night sky, leave that thumbnail highlighted.

Note: For the constellation Leo, the star charts for magnitudes 0-3 have a field of view of 100°. For magnitudes of 4-7 the field of view is 50°.

magnitude chart for latitude 40, magnitude 4

Constellation: Orion

Switch to Crux

4 What were sky conditions like that night?

Were there any clouds? Estimate how much of the sky was covered (touch/click the image below):

clear Clear

quarter ¼ of the sky

half ½ of the sky

overcast More than ½ of the sky

5 Did you use a Sky Quality Meter (SQM)?

If so, please tell us your reading and, optionally, the serial number of the SQM you used.

6 Ready to send us your data?

If you have filled out all the information in the previous five steps, you are ready to send us your data. Take a moment to double-check that the data you have entered above is correct and then click the Submit Data button below. And thanks for being a GLOBE at Night citizen scientist!