Q: Are the magnitudes in the ETCs AB or Vega magnitudes? ... Q: How is the signal to noise defined? A: In optical and infrared imaging, the applications display a signal to noise over the PSF area, which is computed in a circle of radius seeing/plate_scale. ... In optical imaging only, a second signal to noise is computed which is the signal to noise at the central pixel. ... A: The template spectra stored in the database are measured or simulated spectra covering different wavelength range. ...

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Can I use Tiny Tim models in programs like DAOPHOT? This is actually the most frequently asked question. ... Some filters are not included since they are "weird" or cover a range of separate wavelengths, like the linear ramps. ... When Tiny Tim asks for the filter name, just enter "none" or "mono". ... How can I adjust the focus of the Tiny Tim models? ... Can Tiny Tim model the NICMOS coronographic mode? ... What's the deal with the pixel scattering function in WFPC2? ...

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The computed band passes. ... The interim correlator input is filtered by 8 analog filters (50 Mhz wide at the 260 Mhz IF... one for each sub correlator). ... For bandwidths of 25 Mhz and below the real data stream is digitally down converted to complex samples I, Q streams. ... The Top figure is the halfband filter bandpass computed from the filter coefficients. ... The computed filter has aliased power, extra IQ filtering, and two applications of the filter on the resulting real bandpass. ...

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... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > FAQ . Available Languages: en | ... Symptoms of this problem include the above message in the error log and zero-length responses to non-zero-sized files. ... A Permission denied error in the error_log , accompanied by a Forbidden message to the client usually indicates a problem with your filesystem permissions, rather than a problem in the Apache HTTP Server configuration files. ...

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... NB The next 2 columns will only be present if the parameter usecat has been set to true . ... Source parameters such as count-rates, magnitudes and semi-major axes, are given in sub-tables-eg the column CORR_RATE is actually a vector column containing the values for each filter. ... QUALITY FLAGS Each source has an associated ``quality flag''. ... 0 1 Source lies above one or more bad pixels . ... QFLAG The quality flag for each source in each filter obtained from the input source-lists. ...

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• Description
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... Mass . 17a. Measuring Mass . ... A medium-size (1.25 inch wide) binder clip, as is used in offices to hold papers together--the type made of flat blue steel, with two wire handles. ... The theory predicts that the oscillation period should be proportional to the square root of the oscillating mass, including the mass of the clip. Note that gravity plays no part here: the oscillation period would be the same on the Moon or in zero-g. Denoting square root by SQRT, we have . ...

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• The Discovery of Atoms and Nuclei

Star formation is often best manifested by bright H II regions.These are regions of hydrogen which have been ionized by ultraviolet photons which are emitted from massive stars (typically stars more than 20 times the mass of the Sun). ... A narrowband filter image centered on this wavelength will then readily reveal these H II regions and hence the current sites of star formation in a galaxy, The luminous blobs that can be seen here are all H II regions . ... NGC 3558 Visual . NGC 3558 Infrared . ...

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... A theory suggests that a certain sub-class of gamma-ray bursts all have the same absolute magnitude. ... The author claims that this absolute magnitude is so different from that in the previous sample that this must belong to a new sub-class of gamma-ray bursts. ... To do this, there needs to be some feature in their spectra which correlates with their absolute magnitude. ... Consider a telescope which is continually monitoring a star, looking for transits due to planets orbiting this star. ...

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Log windows display messages from all "actors" (instruments, the TCC, the hub...) and allow you to send commands. Controls along the top allow you to filter out unwanted garbage or highlight messages of particular interest. ... Regular Expressions . ... The entry field for "+ Actors" and "+ Commands" filtering accept space-separated regular expressions . ... If you plan to send many messages to a particular actor, you may select the actor from the menu next to the command entry field. ...

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STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... The Meade StarNavigatorтДв series was designed with ease of use and convenience in mind. ... Coronado€о Solar . ... H-Alpha Filters . ... Blocking Filters . Coronado Accessories . ... Dealer Locator . ...

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... Since I began to subscribe arxiv/astro-ph abstracts, from an astrostatistical point of view, one of the most frequent topics has been photometric redshifts . This photometric redshift has been a popular topic as the catalog of remote photometric object observation multiplies its volume and sky survey projects in multiple bands lead to virtual observatories (VO ? ... Typically, measuring redshifts requires spectral data, which are quite expensive in many aspects compared to photometric data. ...

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... Обзор LPR фильтра. Впечатления от наблюдений с LPR фильтром. ... Характеристики цветных фильтров Baader-Planetarium . Мой перевод pdf- файла о фильтрах с сайта Baader-Planetarium (379 кб) . ...

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... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Quickly find out more about ASKAP with answers to these 'frequently asked questions': . ... Once built, ASKAP will form part of CSIRO's Australia Telescope National Facility along with existing telescopes at Parkes, Narrabri and Mopra. ...

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• VLBI Wiki | PmWiki / Troubleshooting
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... Staff . Research staff . ... Research . ... Library . ... Who may have access to the Library? ... Or You contact the Library Staff ( This email address is being protected from spambots. ... You can borrow the books you need, but you have to leave them in your office at the disposition of the Library Staff. ... However library staff has access to the borrowed books at anytime. ... If you have further questions, please contact the Library Staff ( This email address is being protected from spambots. ...

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... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... We have obtained imaging polarimetry of the comet C/2013 R1 (Lovejoy) with 2-Channel-Focal-Reducer Rozhen instrument at 2m RitcheyтАУChr tienтАУCoud telescope of the Bulgarian National Astronomical Observatory Rozhen in two dust continuum filters covering wavelength intervals clear from molecular emissions and centred at 4430 in blue filter and at 6840 in red filter. ...

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CCD Forum Message . Forums: . ... CCD Tips and Techniques | Post . ... Colour Filter On A CCD . ... I was wondering if you could help me with a question I have about colour filters on CCD's: . For a CCD that is using a bayer colour filter on top of the pixel array, i have seen two different ways that this has been arranged: . ... www.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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... Next: Star Finding and Up: Image Restoration and Previous: Multiresolution and Astronomical . ... Design improvements continue to be made in the filter developed using mathematical morphology principles for the Infrared Astronomical Satellite ( IRAS ) images. The purpose of this filter is to eliminate Galactic cirrus emission from extragalactic fields. ... With an appropriate normalization, the filter curve was applied to each pixel in the image to remove the Galactic cirrus. ...

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Getting Involved . Are you looking to get your family and/or friends more involved in astronomy? ... Either way, with Family ASTRO you can get just about anyone engaged in astronomical topics while having a lot of fun at the same time. ... Each kit or game also has its own web site with more background reading and other resources (including Frequently Asked Questions) for those who wish to explore these topics in more detail. ... Frequently Asked Questions . ...

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. NEdit is a popular GUI-style text editor for Unix and VMS systems. These are answers to the most frequently asked questions to discuss@nedit.org. This information is also available from: . ftp://ftp.nedit.org/pub/ <current>/FAQ, . and from the NEdit web page at: . http://nedit.org . Where to get information . Diagnosing and reporting problems . Building . Customization . Features . Server mode and nc . Editing techniques . Bugs . About the NEdit FAQ

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... 1999: . The largest catalogue of distant powerful radio galaxies, detected with the RATAN-600, mapped in the radio range at the VLA, and photometered in 4 filters at the BTA 6-m telescope was compiled. The catalog allowed to estimate the color redshifts of all the objects and to estimate the ages of stellar systems of the host galaxies. ... The number of these rare and unusual objects is increased fivefold, and makes up fractions of percent among thousands of known dwarf galaxies. ...

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