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|The LDT Observer Information Pages will be unavailable for several hours on the morning of August 21, MST due to scheduled system maintenance.|
Continuing in 2023B and 24A, limited in-person observing will be supported at LDT. For those observing remotely, see LDT Remote Observing Notes.
Image: T. Ellsworth-Bowers (Lowell)
The 4.3-m Lowell Discovery Telescope (LDT) is Lowell Observatory's flagship facility at a dark-sky site approximately 40 miles southeast of Flagstaff on the Coconino National Forest.
Lowell Observatory operates the LDT in partnership with Boston University, University of Maryland, Northern Arizona University, University of Toledo, and Yale University. The telescope is scheduled by semester, with the current being 2023A.
The current call for observing proposals is linked in the sidebar at left for Lowell Observatory and Partner Institution members.
LMI (Optical Imager)
DeVeny (Optical Spectrograph)
NIHTS (Near-infrared Spectrograph)
Visitor / PI Instruments:
EXPRES (Optical Spectrograph)
QWSSI (Optical Speckle Imager)
RIMAS (Near-infrared Spectrograph / Imager – Under Development)
Updates (and Old Updates)
UPDATE: The 2023B LDT Schedule has been released. (2023Jun08)
UPDATE:Check with staff about the upcoming PypeIt Workshop on April 17. (2023Apr08)
UPDATE: A minor update to the DeVeny User Manual has been released. The new version (v1.7.1 – 10 May 2022) includes corrected confluence links and updates to the PypeIt instructions. It is available on the LDT Observer Information Confluence page. (2022May10)
UPDATE: The change over to the new confluence server https://confluence.lowell.edu has happened. Please let us know if you run across problems with these pages. (2022Mar07)
UPDATE: DeVeny Image Quality Issue: See the DeVeny Instrument Page for more information. (2021Nov15)