HETE-2 Rides Pegasus . ... A small satellite observatory known as the High Energy Transient Explorer - 2 ( HETE-2 ) was tucked into Stargazer's winged Pegasus rocket , slung beneath the large trimotor jet's fuselage. ... HETE-2's mission is to hunt gamma-ray bursts, brief, random flashes of high energy photons from the distant cosmos. ... HETE-2's x-ray and gamma-ray instruments will be able to rapidly alert ground-based observatories to point toward ongoing, bright gamma-ray bursts. ...

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.

Stellarium 0.12.3 . ... Classes . ... ClassљList . ... SatellitesListModel Class Reference . A model encapsulating a satellite list. ... Tell the model that its internal data structure is about to be modified. ... Tell the model that its internal data has been modified. ... The model keeps a pointer to the satellite list, not a copy, so every time that list is modified outside the model (i.e. satellites are added or removed), you need to call beginSatellitesChange() and endSatellitesChange() . ...

... The Drake Equation: Adding a METI Factor . ... METI (Messaging to Extra-Terrestrial Intelligence) is an activity, which I believe to be an inherent attribute of advanced civilizations. In order to account for the true prevalence of communicative civilizations (that is, those that engage in METI), I suggest we introduce a METI factor f m into the classical Drake Equation . ... f p = The fraction of those stars with planetary systems . ... Then the METI factor f m should be quite small, about 0.01. ...

chandra_acis_ao9.par ; generate an ACIS spectrum for a source using a DEM , ; and optionally rescale the DEM to produce the same ; counts as a ROSAT / PSPC observation ; ;calling sequence ; .run initale ; @chandra_acis_ao9.par ; ;(LL/VK; modified from chandra_acis_ao5.par, Feb04) ;(LL ... density [cm^-3] T_components = [6.9, 7.4] ;log(T[K]) components in the EM EM_components = [5.1d12, 6.1d12] ;Emission Measure [cm^-3] obs_rate = 0.1 ; ROSAT / ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... space flight . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... NASA recognizes historic flight . ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

New precession formula . ... It gives the precession-nutation matrix as the product of four rotational matrices as NP = R 1 (- ) R 3 (- ) R 1 ( ) R 3 ( ) and the precession one similarly as P = R 1 ( - ) R 3 (- ) R 1 ( ) R 3 ( ) . Here and are the angles to specify the location of the ecliptic pole of date in the given inertial frame, and are the true and mean ecliptic angles of precession, respectively, and and are the true and mean obliquities of the ecliptic, respectively. ...

... Byte-by-byte Description of files: star -S1.txt , star -S2.txt, star -S3.txt ------------------------------------------------------------------------------- Bytes Format Units Label Explanations 1- 4 I4 --- YYYY Year of the date 6- 7 I2 --- MM Month of the date 9- 10 I2 d DD Day of the date 13- 14 I2 h h Hour of the day 18- 24 F7,2 d JD* Julian day of the date , JD*=JD-2450000.5 28- 31 F4.1 degrees M-S Apparent distance between ...

This module provides for the generation of Expires HTTP headers according to user-specified criteria. ... This module controls the setting of the Expires HTTP header in server responses. The expiration date can set to be relative to either the time the source file was last modified, or to the time of the client access. ... ExpiresByType . ExpiresDefault . The ExpiresDefault and ExpiresByType directives can also be defined in a more readable syntax of the form: . ... Module: mod_expires . ...

This is a new popup window - close it when you are done . ... 1st image with new camera, canon 450d which was modified for use in astrophotography. Scope wo 80mmfd mount cge my original camera now in the shop for shutter repair, unguided 33x180sec calibrated with deep sky stacker and post processed in Photoshop cs3 captured the evening of November 11th 2010 from the overly lit skies above my observatory 42.36.01n 71.17.53w . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

To do a 'long' list of a single file in your current directory: ls -l file1 -rw-r--r-- 2 unixjohn doc 3287 Apr 8 12:10 file1 . ... To do a long list of all the files in your current directory: ls -l -rw------- 1 erpl08 iss 4307 Jun 17 10:00 FAQ.xdh drwx------ 2 erpl08 iss 1024 Jun 17 10:00 SCCS -rw------- 1 erpl08 iss 15119 Jun 17 10:00 commands.xdh -rw------- 1 erpl08 iss 266 Jun 17 10:00 concepts.xdh . ...