Monday, June 21, 2021

SDO Stamps are on Sale!

USPS Forever stamps featuring SDO images were released by the Post Office on Friday in a ceremony at the Greenbelt, Maryland, Post Office. The stamps have 10 SDO images in each set:

The Summer Solstice (Northen Hemisphere) occurred at 11:32 pm ET yesterday (June 20, 2021). Celebrate the solstice with SDO Stamps. Send someone the Sun!

Thursday, June 17, 2021

Guidance System Calibrations Yesterday

Yesterday, June 16, 2021, from 1700-2000 UTC (1-4pm ET), SDO ran calibration maneuvers for the pointing system. These tests were to restart one of the inertial reference units and then a roll of the satellite to help refine some of the parameters in the Kalman filter. During this time science data may be missing or blurry. The tests were successful and will help maintain SDO's pointing accuracy for years to come.

My congratulations to the Flight Operations Team for completing an excellent set of calibration maneuvers!

Monday, June 7, 2021

A Week of Infrastructure Repairs!

This week is a busy week for people making repairs of SDO-related infrastructure.

On Tuesday, 8 June 2021, the fiber optics linking the SDO ground station and the SDO JSOC in Palo Alto, CA, will be disconnected and relocated. This work is scheduled to start at noon MT and to take about 2 hours but could last as long as 6 hours. During this time the AIA and HMI data will be unavailable. The automatic replay option will fill in the data once the repairs are complete.

The NASA building housing the SDO servers will undergo infrastructure maintenance 12-13 June 2021. This will require us to shutdown our servers over that weekend, which means the website and data will not be available. The servers will be powered down Friday evening (June 11, 5 pm ET) and powered up Monday morning (June 14).

We apologize in advance for any inconvenience these repairs may cause.

Wednesday, May 5, 2021

Momentum Management Maneuver #40 Today

SDO will execute momentum management maneuver (MM) #40 today starting at 1910 UTC (2:10 pm ET). The maneuver should take about 30 minutes. During a maneuver SDO science data may be missing or blurred. These maneuvers are needed to keep SDO accurately pointed at the Sun and taking data.

Wednesday, April 28, 2021

SDO Off-Point during the Parker Solar Probe Perihelion

From 2100 UTC (5:00 pm ET) on April 28, 2021, to 1100 UTC (7:00 am ET) on April 29, 2021, SDO will off-point from the center of the Sun. This will support the PSP perihelion passage at 0900 UTC, April 29, 2021.

This is an opportunity for you to examine the middle corona that is not normally seen in the AIA field-of view. The exposure time will be increased, there will be fewer AIA images, and lossless compression will be used to download the images. That means you will be able to bring out details in the middle corona by co-adding frames.

Tuesday, April 27, 2021

Website Maintenance - April 27, 2021

The SDO website is undergoing some maintenance today, April 27, 2021. Some site features and pages will be unavailable during this time. We apologize for the inconvenience. 

Wednesday, April 14, 2021

EVE Cruciform Maneuver Today

SDO will perform the EVE Cruciform Calibration Maneuver today from 1300 UTC (9:00 am ET). During the maneuver science data may be missing or blurred.