Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 25 - 31.03.2013, Forecast on 01 - 08.04.2013, Carrington Rotations 2135 (21,5.03.2013) SUNSPOT-FORMING ACTIVITY OF THE SUN CHANGED FROM THE LOW TO THE AVERA- GE LEVELS. ... ON THE VISIBLE SOLAR DISK THE FOLLOWING CORONAL HOLES WERE OBSERVED: --------------------------------------------------------------------- sign N end е end S end W end EE R Observatories CH - S48L269 S52L264 S58L266 S50L296 28.03 2 SDO, SOHO.. ...

... Jitter is usually very small in magnitude and random in effect, and is not expected to lead to systematic throughput changes. ... However, such a change should lead to an obvious decline in the strength of the comparison lines at one end of the spectrum relative to the other and not an overall decline in counts. No such effect is seen (the counts decline evenly from one end of the spectrum to the other). ... The value changes steadily, but not by enough to account for the changes in counts seen. ...

... Count Rate Ratio (cr_ratio) . Introduction of a tabular file, that describes the differences between expected count rates and the count rates measured in orbit. ... The change involve a new entry in the 'models' section of RGASIM : rgasim begin models begin MYMODEL begin : lincoordFile RGS_coordinates_file.CCF end : end : end . Exploiting the LINCOORD files as described above, the location of these simluators in the telescope frame are no longer described in the configuration files of SciSim. ...

... Moons, Rings, and Unexpected Colors on Saturn . ... Credit Copyright: Cassini Imaging Team , SSI , JPL , ESA , NASA Explanation: Why would Saturn show such strange colors? The robotic Cassini spacecraft currently orbiting Saturn has beamed back images showing that the northern hemisphere our Solar System 's most spectacularly ringed planet has changed noticeably since Cassini arrived in 2004, now sporting unusual and unexpected colors. ... Saturns Moon Helene in Color . Six Moons of Saturn . ...

Blackholes2 Forum Message . ... Post . ... Shifts Are As Would Be Expected. ... Post Message | ... Red and blue shifts can be caused by velocities also. ... The expectd result would be a red or blue shift proportional to the aparent distance an object is from the observer. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... VLBI Schedule . ... Observers Wiki . ... Main / . ... Each DF has a header of 4 32-bit words followed by 2500 32-bit words of data (10000 bytes). ... m5data 2630/tcp # Mark5 data . ... Used to set the output data rate of the Mark5 at the station. Expected response: . ... Used to make the Mark5 stop playing if it was playing back data from disk. ... Used to make the Mark5 at the station start sending data. ... Used to make the Mark5 at the station stop sending data and terminate the connection. ...

... Unsafe act - a behavioral departure from an accepted, normal, or correct procedure or practice which, in the past, has produced injury or property damage or which has potential for doing so in the future; an unnecessary exposure to a hazard; conduct reducing the degree or safety normally present in an activity. ... Any hazardous unsafe condition, or act that presents a situation of imminent danger to life and/or property requires urgent action. ...

... Science Users Information > Observing with ESO Telescopes > Phase 2 Preparation > Observing conditions . ... Service Mode Philosophy . ... The following definitions of the observing conditions are common between Phase 1 preparation and Phase 2 preparation, as well as between Service Mode and Visitor Mode observations. ... There are additional Service Mode Policies and Service Mode Guidelines regarding the observing conditions. ... Seeing (Phase 1) and Image quality (Phase2) constraints . ... Moon . ...

... Tonight's Sky . ... Observing . ... Bob Berman . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Dave's Universe . ... Bob Berman's Strange Universe . Bob Berman's strange universe: Expect a surprise . ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...