AO Home AO Astronomy Robert Minchin Blog Publications IDL Routines . Rotang can either be run from the command line as described here or through the alfa_ang GUI . ... To run rotang at Arecibo: . Start IDL . ... Run Rotang: . rotang, Date , RA , Dec , Time , /choice . ... Rotang also calculates the Azimuth and Zenith Angle fir every source. If the Zenith Angle is greater than 20 degrees, then the program will return that the source is down and will not calculate an optimum ALFA angle. ...

... The following tools are available: 3.1 strbs: Star Tracker BoreSight calculation  SYNOPSIS strbs instrument = instr ra= ra dec = dec apos = apos odffixout= true |false bstoolsout= true |false  DESCRIPTION Given the prime instrument instr and its viewing direction in terms of Right Ascension and Declination of the boresight + astronomical ... REFERENCE See task epicbscalgen and cal documentation for de nition of boresight related coordinate frames. ...

... In the above example, the second region uses the global coordinate system (PHYSICAL by default). ... Supported systems include: name description ---- ----------- PHYSICAL pixel coords of original file using LTM/LTV IMAGE pixel coords of current file FK4, B1950 sky coordinate systems FK5, J2000 sky coordinate systems GALACTIC sky coordinate systems ECLIPTIC sky coordinate systems ICRS currently same as J2000 LINEAR linear wcs as defined in file In addition, two mosaic coordinate ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2001 November 23 . Counting Falling Stardust . ... Explanation: In the clear, dark and moonless predawn hours of November 18 , Greenbelt, Maryland's local baseball field was packed. ... Some had long since lost track ... but others were keeping score, counting hundreds of Leonid meteors in a short hour's worth of skygazing. ... About APOD | ...

... Sun images . ... Active areas . November : 2015 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Beta . ... Coordinates and other characteristics of active regions are issued for November 09, 2015 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for November 09, 2015 00:31 UT . ...

... I am still trying to determine the cause of a difference between the results for the new and old code with the other kernels. ... I then returned to trying to figure out the difference between the old and new drizzlepac coordinate mapping. It turns out the old drizzlepac was using its internal mapping code, so I forced it to use the wcs mapping code instead.But that did .. ... I did some more testing and code reading in drizzlepac in search of the discrepancy between the old an new version. ...

1 December 2001 . Armagh Observatory reports that last month was exceptionally dry, mild and dull compared to a normal November. ... Last month was the driest November at Armagh since 1989 (25.1mm). The average temperature for the month was 8.2 degrees Celsius, almost 2 degrees above the November average of 6.3 degrees. ... Only 35.6 hours of sunshine were recorded compared with the average of 57 hours. This makes last month the dullest November since 1983 when there were just 27.5 hours. ...

Magnetic mapping and conjugations afterflight calculations . ... The magnetic mapping polar diagram, and ASCII files for each decade of month: . ... ASCII files description | DEC 1 (ASCII file, size more then 350Kb!) ... The IB_TAIL magnetic conjugations with the others Spacecraft . ... ASCII file description | Plot description | ... ASCII file . real time plot . ... The IB_TAIL magnetic conjugations with the groundbased magnetic observatories . ... INTERBALL mission  ...

... Go to new wiki . ... LBANov2006 / . ... March 22, 2007, at 12:27 PM by . ... February 20, 2007, at 11:25 AM by . ... November 23, 2006, at 05:51 PM by breid ? ... November 19, 2006, at 07:42 PM by . ... November 19, 2006, at 12:01 PM by guest ? ... November 19, 2006, at 08:58 AM by jlovell ? ... November 18, 2006, at 03:29 PM by stingay ? ... November 13, 2006, at 08:56 AM by adeller ? ... Page last modified on March 22, 2007, at 12:27 PM ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. November 19, 1999 . Mercury And The Sun . ... TRACE Project . Explanation: Just days before the peak of the Leonid meteor shower , skywatchers were offered another astronomical treat as planet Mercury crossed the face of the Sun on November 15. Viewed from planet Earth, a transit of Mercury is not all that rare. ... About APOD > . ...

... Tonight's Sky . ... The Magazine . News . Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... November 2011 . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...