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ABOUT US
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Naval Oceanography One Pager
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United States Naval Observatory
Our Telescopes
The 12-inch Clark/Saegmüller refractor
Views of the Planets With the USNO's 12-inch Refractor
Home
Our Commands
United States Naval Observatory
Our Telescopes
The 12-inch Clark/Saegmüller refractor
Views of the Planets With the USNO's 12-inch Refractor
ABOUT US
Mission & Vision
History
Naval Oceanography One Pager
End of Year Graphic 2022
LEADERSHIP
Commander
Technical Director
Command Master Chief
All Leadership
OUR COMMANDS
Naval Oceanographic Office
Fleet Numerical Meteorology & Oceanography Center
United States Naval Observatory
News from the Naval Observatory
Earth Orientation Department
Precise Time Department
The USNO Master Clock
The USNO Master Clock
Time Dissemination at the USNO
USNO Alternate Master Clock (AMC)
Cesium Atomic Clocks
Hydrogen Masers at the USNO
Rubidium Fountain Clocks
USNO Time Scales
International Time Scales and the BIPM
Definitions of Systems of Time
Global Positioning System
Global Positioning System Overview
USNO GPS Data Categories Explanation
CGGTTS Data Format
USNO GPS Time Transfer
Leap Seconds
GPS Information: SA, DGPS, Leap Seconds, etc.
GPS Week Number Rollover
GPS Timing Data and Information
USNO Format Explanation
USNO Computer Display Clocks
Two-Way Satellite Time Transfer (TWSTT)
Telephone Time
Network Time Protocol (NTP)
US Eastern Time Zone NTP Servers
US Mountain Time Zone Servers
DoD Customer Servers
Astronomical Applications Department
Celestial Reference Frame Department
Senior Enlisted Advisor
Careers at the USNO
Contact USNO
Naval Oceanography Operations Command
Fleet Weather Center - Norfolk
National Ice Center
Fleet Weather Center - San Diego
Joint Typhoon Warning Center
Naval Oceanography Anti-Submarine Warfare Center
Navy DoD Supercomputing Resource Center
PRESS ROOM
News Stories
Photo Gallery
Video Gallery
Public Use of Limitations
CAREERS AND INTERNSHIPS
Planetary images made with the USNO's 12-inch refractor
Here is a selection of planetary images made with the 12-inch telescope. Click on the thumbnails to open a full-resolution version.
JUPITER
Jupiter with its moon Europa and Europa's shadow, imaged on 2016 April 16, 02:58 UT
Jupiter with moons (l to r) Europa, Ganymede, and Io, 2021 November 9, 22:33 UT
Jupiter, with Ganymede in transit, 2021 November 30, 22:43 UT
Jupiter and Io, 2021 December 13, 22:37 UT
MARS
Mars, 2014 April 22, 03:29 UT
Mars, 2018 August 24, 03:09 UT
Mars and Phobos, 2018 August 24
Mars, 2020 October 3, 02:34 UT
SATURN
Saturn, 2015 June 30, 03:17 UT
Saturn with its inner moons, a composite image made from two sets of exposures, 2015 July 12, 03:04 UT
Saturn, 2018 August 24, 01:45 UT
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