LBTO Science Operations
Welcome to the Science Operations Web Pages for the Large Binocular Telescope Observatory (LBTO), an international collaboration among institutions in the United States and Italy. LBT Corporation Members are: The University of Arizona on behalf of the Arizona university system; Istituto Nazionale di Astrofisica, Italy; The Ohio State University, and The Research Corporation, on behalf of The University of Notre Dame, University of Minnesota and University of Virginia.
Large Binocular Telescope – Image credit: Ryan Ketterer
Located on the summit of Mt. Graham, LBTO aspires to be the first of the ELTs and one of the leading 8-m class telescopes. Comprised of privately funded or national institutes and consortiums of universities, the goal of LBTO and its partners is to ensure that its community of users are receiving the highest-quality astronomical data.
On these pages you will find the information needed to prepare for observations or writing proposals and details about the instruments available.
Additional details about the Mt. Graham International Observatory (MGIO) site can be found on the MGIO web pages. Additional technical details about the mechanics and optics of the Large Binocular Telescope can be found on the main LBTO website.
About the Telescope, Support Staff, and the Instruments
View of the SX (Left side of the telescope) taken closed dome by S Allanson, LBTO
The About and Instrument sections provide the users a plethora of information about the science capabilities available at the LBT, and information about the Support resources available. Detailed information is included for our Facility and PI instruments, both capabilities and use.
About Proposal Submission and Script Preparation
Cat’s Eye Nebula with SOUL LUCI1 AO in Ks H2 FeII – B.Rothberg, LBTO
In addition to the About LBTO and Instrument Pages, LBTO has developed a Phase I Tool (PIT) for Proposal Submission which is used by a number of our partners. LBTO Observing Tool (OT) is a tool that allows users to create complex and detailed observing scripts for our facility instruments. This tool allows users to visualize their science script generation.
About observing at our Facility, Obtaining your Data, and Data Dissemination
LBTO Facility – Image compliments of J. Crass, Notre Dame
Whether observing remotely, onsite, or in queue, there are a number of useful tools and links to help prepare for observing runs, monitor the site and weather, etc under Observing with the LBT. Data is accessed in real time through our data archive. Pipelines are in development by various institutions and instrument PI’s.
LBTO Instrument News
PEPSI PFU SX Beamsplitter not Moving
11/1/26: Shortly after resolving the PFU SX vignetting issue, it was noticed that the beamsplitter carousel was having difficulty moving. After further troubleshooting, the beamsplitter is stuck at an intermediary position, approximately 30 degrees from BS1. Since no light can …
... Read MoreLUCI2 Offline: Filter Wheel 1 not moving reliably
The filter wheel #1 (narrowband filters) in LUCI2 has stopped moving reliably. We are currently investigating whether it might be an issue with the external motor control electronics, e.g. a failing motor drive amplifier or something else that would bypass …
... Read MorePEPSI PFU SX Vignetting – Resolved
9/14/26: During summer shutdown 2026 restart, it was discovered that the PEPSI SX PFU side was suffering from severe vignetting despite attempts to realign with the M3 on-sky. The cause was tracked down to index-matching oil in between some of …
... Read More| Status | Instrument | Notes |
|---|---|---|
| 🟢 | LBC BLUE | Released for science. TMS checked out and released for science |
| 🟢 | LBC RED | Released for science. TMS checked out and released for science |
| 🟢 | LUCI1 | LUCI has been released for science. ESM released for science. Full AO imaging is released for science. AO spectroscopy is released for shared-risk science. |
| 🔴 | LUCI2 | Unavailable. LUCI2 is offline with a problem in Filter Wheel 1. |
| 🟢 | MODS1 | MODS1 is released for science. Note that both MODS underwent controller upgrades in 2025. |
| 🟢 | MODS2 | MODS2 is released for science in shared-risk. One mask insert error, which required on-site assistance, occurred during restart, but it could not be reproduced in daytime tests. |
| 🟡 | PEPSI PFU | SX: Unavailable due to stuck beamsplitter carousel. DX: Released for science. |
| 🔴 | PEPSI POL | Planned install Dec1 2026. |
| 🔴 | LBTI | Unavailable, Installation expected in November |
| 🟢 | SHARK NIR | Available fro science with coordination |
| 🟢 | SHARK VIS | Available for science with coordination. |
