... 2015 November 11 . An Unexpected Rocket Plume over San Francisco . ... Explanation: What is that unusual light in the sky? ... The consensus of experienced sky observers was that the plume resulted from a rocket launch -- an explanation that was soon confirmed as an unpublicized test of a submarine-launched , unarmed, Trident II D5 nuclear missile . ... About APOD | ...

... An Unexpected Rocket Plume over San Francisco . ... It appeared just as the astrophotographer and his friend were photographing the Golden Gate Bridge in San Francisco, California against a more predictable night sky. ... The consensus of experienced sky observers was that the plume resulted from a rocket launch -- an explanation that was soon confirmed as an unpublicized test of a submarine-launched, unarmed, Trident II D5 nuclear missile. ... Publications with keywords: rocket - launch . ...

The overall efficiency (including atmospheric transmission, reflectivity of the telescope mirrors and overall efficiency of the optics and of the detector) for broad-band imaging should be about 25% in H and K, and about 15% in J. The main noise source for both broad- and narrow-band imaging should be the photon noise associated to the background+source flux. ... Flat fielding (and possibly background subtraction) might increase the noise by a factor 2 ? ...

... In Table 14.1 we list a provisional summary of our calibration goals for Cycle 7 and Cycle 7-NICMOS. ... The present knowledge of photometric calibration does not yet permit a definitive projection of the ultimate accuracies which may be obtainable with NICMOS. ... Perforce our existing calibration data for Camera 3 have been obtained with it out of focus and therefore the estimates for its in-focus performance remain extrapolations. ... Breathing and dewar motion are approximately equal effects. ...

... This package contains a suite of tasks to aid in the development of the tasks rmfgen and arfgen . ... readrmf , to view one or more rows of an RMF dataset . ... readimage, which converts one of more rows of an image into columns in a new table (for use with the FTOOL dmprmf). comparermf, which compares the RMF generated by rmfgen with that stored in the CAL. ... Of these, the task readrmf is considered useful to other developers and users, and a separate task description is written for this. ...

... The center frequency was 1397.93 Mhz. ... make a model of the resonance from the Off source data. fit this model to the on source data . ... w is the frequency . ... But we divide the onSource and off source by the same function so the the noise is not part of onSrc/Offsrc at the end. ... There are 14 pages. 1 for each on/off pair. 1st Plot: the 2 minute average band passes for onSrc (black), offSrc (red), and calOn - calOff (green). 2nd Plot: Onsrc/calDif, offSrc/calDif and the model fits to each. ...

... These are ``quirks'' rather than ``bugs''. Below is a list of quirks. When loading a file and ``Reset Intensity Upon File Load'' is disabled, the intensity range of the previous image will be used. ... When moving between two images (such as when blinking, or when loading a new image), the display system attempts to retain the old image parameters (i.e. zoom box). What is retained are the corners of the zoom box measured in image pixel co-ordinates, not world co-ordinates. ...

Next: Analysis in the Up: MIDAS utilities for Previous: Fourier analysis . For the detection of smooth signals, e.g. sinusoids, use either SCARGLE/TSA or AOV/TSA with bins. ... SCARGLE/TSA -- . Scargle sine model: This command computes Scargle's (1982) periodogram for unevenly spaced observations x . ... In this way, the command can be used to perform a CLEAN-like analysis manually by removing individual oscillations one by one in the time domain (see Roberts et al. ... AOV/TSA -- . ...

... The processing of these associated images presents new challenges to the HST data processing pipelines, which heretofore operated only on single images. ... Stage 1 (CALNICA) calibrates individual exposures without information from other members of the association. ... Stage 2 of calibration (CALNICB) only operates on associated images that have previously gone through CALNICA processing, and creates combined images for each distinct (non-overlapping) pointing within the association. ...

Next: *imexamine* - General analysis Up: Regions and Source Parameters Previous: *imcnts* - Find background . input file: xdata$snr.qp . output file: snr_cnt.tab . ... N.B.: The use of imcnts to obtain counts in regions can lead to wrong results when more than one region is used in the same run, if there is any overlap between them, since each pixel can be assigned to ONE AND ONLY ONE region (the last one defined that includes that pixel. See ``help regions''). rsdc@cfa.harvard.edu . ...

Trail encounter . ... Expected meteor rates . ... The Leonids are the debris of Comet 55P/Tempel-Tuttle. ... The Earth's passage right through the centre of trails is associated with the most spectacular meteor displays (studies show that, as well as how close to the centre of the trail you are, the strength of the display also depends on how far along a trail's length you are). ... The encounter with the 1932 trail will lead to enhanced meteor activity: a nice outburst, but below storm level. ...

... Science . ... Science Users Information > Data Handling and Products > Data Reduction FAQ > I see unexpected boxy emission-like features in my REDL spectra - where do they come from? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... The pipeline by default interpolates across the bad columns in the REDL CCD when it creates the master bias, but does not so when it processes the science data. This inconsistency can create boxy emission-like features as seen in the figure below. ...

My research interests are focussed on the theory and modelling of accretion processes as well as star and planet formation mechanisms. I am particularly interested in the stability properties of accretion discs, the generation of MHD turbulence and associated angular momentum transport, disk - planet interactions and the origin and characteristics of jets and winds from accreting systems . ... These results have been published in Salmeron & Wardle, 2005, M.N.R.A.S., 361: 45-69. ...

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" . ...

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Bug fix: the SDSS primary might be tilted if two identical (or nearly identical) moves were commanded. ... The "galil" breakthrough command now echoes all replies. ... Improved SDSS 2.5m support, including: . ... Bug fix: predicted durations from the Galil set the time limit of the user command instead of the device command; this fix should make long moves more robust. ... Mirror name now reported to the user when the user connects to the mirror controller. ... The first version with version history. ...

... 1 Least square fit over 6 year sliding window Gabor transform Expected ratio of () = - ~6 around 7 d i Synthesis · NIB pressure term O1 explained by tidal equilibrium model: clearly a lunar effect · At 13.6 d expected ratio works for IB (over continents) pressure term ; at 7 d expected ratio works for NIB (full) pressure term · Proportionality wind / pressure term is consistent with 2 facts Lunar tesseral ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... Flights Chronology . ... ISS Russian Segment . ... History of flights . ... Cosmonaut physical capacity for work in space flight environment; . ... Structural and functional indices of the muscular system in space flight conditions; . ... Human metabolism in space flight conditions. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

... I.A.Dynnikov, Three-page approach to knot theory. ... Universal semigroup, Funktsional'nyi Analiz I Prilozhenija, 34 (2000), no.1, 29-40 (Russian); English translation in Functional Analysis and Its Appl. 34 (2000), no.1, 24-32. I.A.Dynnikov, Finitely presented groups and semigroups in knot theory. ... Math. 2000, no. ... English translation: Russian Math. ... A.Vershik, Numerical invariants of exponential groups, and a locally free approximation of braid groups (in Russian), Zapiski Nauchn. ...

This sequence of three images, obtained by NASA's Cassini spacecraft over the course of about 10 minutes, shows the path of a newly found moonlet in a bright arc of Saturn's faint G ring. In each image, a small streak of light within the ring is visible. ... Scientists interpret the moving streak to be reflected light from a tiny moon that is likely a major source of material in the arc and the rest of the G ring. ... That arc, in turn, leaks material to form the entire ring. ...