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Overview

The Lowell Discovery Telescope is near the village of Happy Jack, about 1 hour south of Flagstaff.  This dark-sky site sits on the Coconino National forest at an altitude of 7,740 feet.  The LDT enclosure and D. Blackett & R. Wachs Telescope Support Building sit on XX(2-ish?) acres atop an extinct cinder cone.

More Description

Here

About the Site

Maybe why this place was chosen

Link to Site Survey Paper?

Altitude / Humidity / On-Site safety:Because of the altitude and low humidity of the LDT site, remember to drink plenty of water to avoid dehydration. 


  1. If you have not been to the site before, please don't enter without a Lowell staffer, or someone who is familiar with the site.  There is an alarm that needs to be dis-armed, and it is not always obvious how.  Your lodging packet should include keys and written instructions about the gate and alarm codes.

Driving to LDT – Directions for how to get to the site

Lodging for LDT Observing Runs – Where to stay during your observing run


Site Coordinates:

Measured Coordinates

Encoded Coordinates

From the site GPS unit: (Symmetricom S250, WGS84)

Date: 2013-07-08 UT

Latitude: 34:44:39.498 N

Longitude: 111:25:21.054 W

Altitude: 2337 meters

Coded into the TCS:

Date: 2013-07-08 UT

Latitude: 34.7443 = 34:44:39.48 N

Longitude: 111.4223 = 111:25:20.28 W

Altitude: 2361 meters

From the POETS Green GPS: (Spectrum TS-4, WGS84)

Date: 2013-01-10 UT

Latitude: 34:44:39.60 N

Longitude: 111:25:20.40 W

Altitude: 2388 meters (on the El ring)


Date: 2013-03-05 UT

Latitude: 34:44:39.60 N

Longitude: 111:25:21.60 W

Altitude: 2344 meters (on the El ring)

Coded into the MCU:

Date: 2013-07-08 UT

Latitude: 34.7443 = 34:44:39.48 N

Longitude: 248.5774E = 360 - 248.5774 W = 111.4226 W = 111:25:21.36 W

Altitude: 2336 meters

Note: There is a slight degeneracy between longitude and elevation in GPS measurements, hence coordinates vary slightly.

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