We present 0.35-2.5 ЮМm spectra of the south and northwest filaments in the reflection nebula NGC 7023. ... Our spectra fail to show their predicted second emission band at 1.0 ЮМm even though both filaments exhibit strong emission in the familiar 0.7 ЮМm ERE band. The northwest filament spectrum does show one, and possibly two, new dust emission features in the near-infrared. We clearly detect a strong emission band at 1.5 ЮМm which we tentatively attribute to ЮВ-FeSi2 grains. ...

To a special Solar Physics issue on the Bastille Day Event: . ... Multi-scale temporal features of the 14 July 2000 meter-wavelength dynamic radio spectrum compared with TRACE data . ... Figure 1 (100 KB). SOHO/EIT (a) and LASCO/C2 (b) images show the region of the eruptive flare event of 14 July 2000 and related halo CME. ... Figure 2 (47 KB). ... Figure 3 (115 KB). Medium-scale dynamic spectrum (a), 204 MHz metric (b) and 3000 MHz microwave (c) profiles of the "Bastille Day" event. ...

... 2001 January 5 . Second Millennium, Last Eclipse . Credit Copyright: Philipp Rau . Explanation: Christmas Day 2000 featured the final eclipse of the Second Millennium -- a partial solar eclipse visible from much of North America . Astrophotographer Phil Rau recorded the entire event on a single image as the Sun and Moon arced through winter skies above Cary, North Carolina, USA. ... About APOD | ...

Next: Coordinate Systems Up: IRAF/PROS Previous: Other Types of Files . A few new features and enhancements to the standard IRAF system have been introduced with the PROS software: . ... Default compound extensions are used by the PROS tasks when no extension is given for the output file name. Most PROS tasks allow the output file name to be defaulted, with the convention that the output file name will be composed of the input `root' name, plus the default extension specific to the task. ...

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . Sun . ... The Sun's Heartbeat . ... Can a 0.2-second pulse from a magnetar put out as much energy as the Sun does in 250,000 years? ... A giant magnetar flare is incredibly bright and emits as much radiation energy as the Sun does in hundreds of thousands of years. Get instant access to subscriber content on Astronomy.com! ... Much more! ... If you are already registered on Astronomy.com, please log in below. ...

There has been ripple in the lband wide bandpass near 1400 Mhz during the a1861 run of may04 and during the a1914 run in aug04. ... The first two sbc were polA, polB at 25Mhz while the last two sbc were polA,polB at 12.5 Mhz. When they observed above 1370 Mhz, the 1320 hipass and 1370 hipass wave guide filters were installed. ... Project a1914 used the 1st two sbc for polA and polB at 25 Mhz. ... Fig 1. (on/off-1) degK vs frequency with offsets for plotting. ... The bumps at 1381 Mhz are gps L3. ...

... JavaScript version 1.3 provides the following new features and enhancements: . ... See the Client-Side JavaScript Guide for details. ... Changes to the Array object. ... The push method returns the new length of the array rather than the last element added to the array. ... Changes to the Date object. ... Added a day parameter to the setMonth method. ... Added the apply method, which allows you to apply a method of another object in the context of a different object (the calling object). ...

Next: Second priority candidates Up: First priority candidates Previous: Stellar objects . Twenty five non emission-line objects are hard to classify at all. ... Figure: Colour distribution for the random sample of 42 second priority candidates in the strip =35-40 (HS 1423+3945 is not included because its APM-colour is not available). ... BCG/H II -galaxies are marked by an additional cross. 4 of 5 APM stellar-type emission-line objects are either QSOs or distant luminous galaxies. ...

Next: Radial velocity of the Up: Optical spectrum of IRAS04296 Previous: Observations and spectra reduction . ... However, molecular emission features are only very rarely observed in the optical spectra of PPNe. ... On the other hand, it is well known that cometary nuclei spectra show prominent Swan band emission. In both spectra of IRAS04296 we have discovered strong emission in the (0;0) and (0;1) bands of the Swan system of the molecule. ... Now consider the case of IRAS04296. ...

Astronomy Picture of the Day . ... Credit Copyright: Philipp Rau Explanation: Christmas Day 2000 featured the final eclipse of the Second Millennium -- a partial solar eclipse visible from much of North America . ... From his location, at eclipse maximum (near picture center) just less than 50 percent of the Sun's diameter was covered by the Moon . ... Publications with keywords: eclipse - millennium - partial solar eclipse . Publications with words: eclipse - millennium - partial solar eclipse . ...

Next: Imaging Polarimetry with NICMOS Up: NICMOS Data Calibration and Previous: The Photometric Performance of . ... NICMOSlook and Calnic C . ... Extracting spectra from a large number of NICMOS grism images requires a convenient interactive tool which allows a user to manipulate direct/grism image pairs. ... NICMOSlook and Calnic-C are two programs that were designed to take advantage of the fact that the NICMOS grism mode typically consists of taking both a direct and a grism image. ...

... 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. ...

... In principle, two observers on the ground can tell, by comparing the position of the same auroral arc against the background stars. ... The display stretches across Canada; just below it, in the middle of the picture, are the lights of Chicago, next to Lake Michigan. ... The Canadian scientific satellite Isis-2 (1971) carried an auroral imaging camera and discovered the diffuse aurora, a broad ribbon around the auroral oval, too spread-out to be noticed from the ground. ... Auroral Acceleration . ...

... A new IRAF task has been developed that automatically identifies linear (line-like) features in an image or set of images. ... In order to automatically detect linear features, the first step is to select pixels in the image (Fig. 1 , left panel) that fall within a given data value range. ... Another aspect of extended linear features is that the image space pixels that describe them are in some way adjacent to one another and have a minimum and maximum length. ...

... A typical spectrum (such as Figure 1) shows the classic triple-peaked spectrum, which is associated with masers located in a circumnuclear disk (e.g. NGC 4258, Nakai et al., ... The Circinus galaxy megamasers are known to be variable on timescales of weeks and months with individual maser features having a lifetime of around one year. ... Most of the masers observed showed some degree of variability over an hour while one feature displayed a doubling of its flux density over about 10 minutes. ...

The INTERBALL space mission ( INTERBALL-1 with its subsatellite MAGION-4 in orbits with an apogee of 30 Re, and INTERBALL-2 with its recently reactivated MAGION-5 subsatellite in orbits with an apogee of 4 Re geocentric) continue to conduct important measurements in the solar wind, magnetosheath, magnetotail, magnetopause and above the auroral region. ... Plasma Boundaries in Near-Earth Space . ... Now we announce that online ABSTRACT submission is available at the SYMPOSIUM home page . ...

... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... LX200 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... MeadeтАЩs new LX70 Series offers high-quality German equatorially mounted telescopes with slow-motion controls and heavy-duty steel tripods. ... Coronado Accessories . ... LX200 R.A. Slow Motion Knob . ...

Methods of Spectral Classification of Stars by Spectrum Photos with Prism. Work with the Computer Program. Determination of Magnetizing Force in Sun Spot by Zeeman's Effect. Investigation of Telescope Optics by Hartmann Method. Investigation of Photoelectric Multiplier. Determination of Stellar Temperature by Method of Spectrophotometric Gradient. ... Investigation of Light Filters Transmission by Photoelectric and Photografic Methods. ... Investigation of Globulae. ...

... Набор микрофонов SHURE PGADRUMKIT4 - это высококачественные микрофоны, предназначенные для профессиональной записи ударных инструментов в студии. ... В наборе поставляются: один микрофон Shure PGA52 для бочки, два микрофона Shure PGA56 для остальное секции ударных, а также один инструментальный микрофон Shure PGA57. ... Set of 10Pcs Anime the Second Generation Funny Minion Dave Characteristic Figure Models KeyChain . ... Figure Height: Approx.6 cm . ... Package Contents: 10 x Figure Model Keyring . ...