... Science . ... Science Users Information > Science Activities > APEX Science Verification > SHFI . ... Observing Facilities . ... Observing with ESO Telescopes . ... Telescope Time Allocation . ... ESO Data . ... The Science Verification (SV) observations of the APEX Swedish Heterodyne Facility Instrument were observed in March 2008. ... A selection of the APEX-1 proposals listed below have been observed during the week of joint SV observations in March 2008, and later during the ESO time of period...

... 610/700 MHz . ... Receiver History . ... The 610-MHz option allows Arecibo to service the VLBA/VLBI band at this frequency. ... For the current daily average 610-MHz RFI plot from the Arecibo "hill-top" monitoring system, click here . For the current frequency v time 610-MHz RFI plot from the Arecibo "hill-top" monitoring system, click here . For the current frequency v time 610-MHz RFI plot (with band-pass correction) from the Arecibo "hill-top" monitoring system, click here . ...

... Current APO Weather . ... Search Site . ... Information for New Users . ... Technical Staff pages . Night Logs and Mailing Lists (maintained by APO) . ... Technical Documents and Database Search . ... Observer's Documentation and Procedures . ... Problem Reporting and APO Technical Documents Database Search . ... APO Drawing/Document Management Procedures . ... APO Technical Documents Database Search . Home Astrophysical Research Consortium . ... Mail Lists (maintained by APO) . ...

The material contained in this Handbook is derived from ground tests and design information obtained by the IDT and the engineering team at JPL, and from on-orbit measurements. ... http://www.stsci.edu/public/p2pi.html ). ... Calibrating Hubble Space Telescope: Post Service Mission (1995). ... http://www.stsci.edu/hst/acs/performance/cte_workgroup/cte_papers.html . ... IDT calibration report] . ... The Performance and Calibration of WFPC2 on the Hubble Space Telescope , Holtzman, J., et al., ...

... An initial problem with the down conversion system has been rectified, and the receiver is now performing very well. 7mm ATCA Upgrade Early results of tests of the prototype 7mm frontend components indicate that good performance can be achieved across the full 30 to 50GHz band. ... Mopra mm-wave Receiver The new MMIC-based mm-wave receiver at Mopra now has full capability at 12mm, in addition to the 77 to 116GHz coverage at 3mm. ... New and more powerful cryodyne refrigerators will also be installed...

... One of the instruments, the Troughton equatorial telescope, is maintained at constant temperature and relative humidity, to reduce the rate of deterioration. ... 3.1 Troughton Equatorial Telescope . Figure 1 shows the equatorial telescope constructed by J E Troughton of London and which was erected in the west dome of Armagh Observatory in 1795. ... Troughton, J. E.: c.1790, Instructions for Adjusting the Troughton Equatorial Telescope, Armagh Observatory Archives , M17.2, 3pp. ...

The Ryle Telescope was used for some years for monitoring variable sources (in addition to its role in source-surveys related to the Sunyaev-Zeldovitch studies). The instrument is now transformed into the "AMI large array": see the AMI pages for details. ... The rebuild took place between 2006 June and mid-2008; between these dates there is no useful data available. ... For some sources there are many plots, organised by date: . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

Peremennye Zvezdy", . ... GSC 4232-02515, NSVS 3147658, NSVS 3174760 . ... 14.2-14.9 (R, NSVS); . ... During observations of a secondary eclipse of GSC 04232-02830 (Goranskij et al., 2005) on August 8, 2007, we identified GSC 4232-02515 as a W UMa eclipsing binary. ... VAST software was used for aperture photometry. ... This method produces a light curve with an arbitrary zero point. ... Light Curve . Light curve of GSC 4232-02515 in NSVS magnitude scale. ... gsc423202515_kadar_nsvs.dat . ...