... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

... The "red leaks" in the UV filters are shown in Figure 3.10 for F122M, F160BW (the new Wood's filter), F170W, F185W F218W F255W, F300W, and F336W. The presence of significant red leaks in the UV filters, together with the much greater sensitivity and wavelength coverage in the red part of the spectrum, makes calibration of UV observations difficult. Table 3.13 shows red leak estimates as a percentage of the total detected flux from de-reddened stellar sources, ordered by spectral type. ...

... 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) . ...

adapted from Observe: Eclipses, published in 1979 by the Astronomical League and "Safe Solar Filters," by B. Ralph Chou, Sky and Telescope, August 1981) . ... Tape TWO pieces of film together into a sandwich, and tape this over the opening in the cardboard. ... The cardboard frame will act as a shade from the bright Sun, while you safely observe through the film sandwich. ... Undeveloped film is not safe. ... tape . ... At the end of one of the tubes, tape the aluminum foil, and make a tiny pinhole. ...

Galaxies are diffuse objects which are imaged against a background of finite brightness and noise. Galaxies which have the maximum contrast with respect to this background are the ones that are first discovered. ... These galaxies have been missed to date but active surveys for them are underway. ... In this page we present several examples of these newly discovered Low Surface Brightness galaxies as well as examples of high surface brightness galaxies. ...

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

... This noise can be reduced by replacing the pixels with an average of the surrounding values using a linear filter. ... The effects of applying linear filters to a CCD frame is shown in Figure . Figure: Different digital filters applied on a CCD image: (A) original, (B) block filter, (C) smooth filter, and (D) Laplacian filter. ... To remove stellar images from a picture of comet Halley, the results of applying different non--linear filters to the frame are given in Figure . ...

... arfgen (arfgen-1.75.6) [?? ... In practice, arfgen does not use the input detector map 'as is'; instead it uses a filtered form of the detector map in which the points that lie outside the regions used to accumulate the input spectrum are excluded. ... In this case the number of image map pixels should be correspondingly greater to ensure a good coverage over the region of interest, which will result in a performance overhead during the initial filtering process. ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Travel to E-ELT Armazones . ... ESO Acronyms . ... Survey Telescopes . ... Star Clusters . ... 1995 . ... Stars@ESO . ... ESO Science Newsletter . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... The Comet€аMcNaught€а2007 . ... Catch a Star 2013 . Catch a Star 2011 . Catch a Star 2008 . Catch a Star 2007 . ...

Not on-site at APO, but can be obtained on loan--contact Jeff Morgan at UWash, morgan/astro.washington.edu . CENTER( ) PASSBAND( ) NEBULAR LINE (OR CONTINUUM) . 4861 60 Hbeta 5007 60 [O III] 6301 10 [O I] -- [S III]6312A line is supressed 6563 10 Halpha -- [N II]6584 and 6583 lines are suppressed 6583 10 [N II] -- Halpha line is suppressed 6728 80 [S II]6717+6731 4686 60 He II 4760 100 blue cont or Fe II 8290 195 red cont. See also the Hodge filter set below. ... APO Filters Homepage ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Parkes | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Technical aspects of the new AAO/UKST H interference filter . ... Basic design: A 3-cavity design of ion-assisted deposition (IAD) of refractory oxide material on both sides of a Schott RG610 R-band filter. ...

... Apache HTTP Server Version 2.2 . ... This document describes the use of filters in Apache. ... The Filter Chain is available in Apache 2.0 and higher, and enables applications to process incoming and outgoing data in a highly flexible and configurable manner, regardless of where the data comes from. ... A wider range of applications are implemented by third-party filter modules available from modules.apache.org and elsewhere. ... There are two ways to use filtering: Simple and Dynamic. ...

. Go to RUSSIAN (KOI-8) . Spectrograph optical schem: . 1, 15, 16 and 17 - A comparison spectrum system (prizm, filter, objective and spectral lamp); 2 - slit (width is adjustable); 3 - shutter; 4 - filter; 5 - collimator; 6 - flat mirror; 7 - grating; 8 and 9 - Schmidt camera; 10 - CCD; N2 - cryostat; 11 - flat mirror; 12 - objective; 13 - lense; 14 - TV-guide . Back to LSS main page. Back to Laboratory Home Page.

... 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. ...

The alfa motor controller is inside a huffman box. There a few cables that come out to the motor as well as the ac power line. ... The box was using a corcom 6EF2F power line filter. A preliminary sweep of this filter from 0 to 2 ghz using a synthesize and spectrum analyzer showed that the filter worked well up to about 200 MHz. ... We need to figure a way to improve these filters since many of the devices in the huffman boxes have computers that are running at multiple ghz frequencies. ...

Measurement of Sky Brightness at the Iranian National Observatory Davoud Afshari1 and Sadollah Nasiri1,2 1Physics Department, Zanjan University, Zanjan 45195-313, Iran; Institute for Advanced studies in Basic Science (IASBS), Zanjan 45195-1159, Iran; Measurement of light pollution 2 Introduction Among 34 candidate sites at the central part of the country, 5 sites namely Garkesh (in Kashan ), Kolahbarfi(in Kashan ), Deynava (in ... One of these is light pollution. ...

This page is devoted to information on Supernova 1998es in NGC 632 Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main supernova page. Information on the original web pages for many of these images can be found on the Supernova links web page. ... M1 Supernova Search has a 1998es web page . ... AUDE has a SN 1998es web page with images and finder charts in French [ Translate ] . ... Lick Observatory Discovery image 11/14/98 . ...

... In typical nightly use, the wide field and planetary telescope and cameras record images of favorably placed objects in the sky, including constellations, bright variable stars, nebulae through narrow-band filters, comets, the Moon, and planets. ... Shared Skies telescopes are available for use by students at the University of Louisville and the University of Southern Queensland, and by teachers and students in middle and high schools mentored by faculty at the universities. ...

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NGC 5128! The supernova in the NGC 5128 galaxy was seen using a 1m telescope from the Sutherland Observatory in South Africa on 21st March 2016, but only using a H-Alpha filter. ... Supernova observed through H-Alpha Filter from Sutherland Observatory ! After receiving the images from the telescope via Las Cumbres Observatory, we then used Starlink Gaia to manipulate the images by changing contrast levels and the colour map in order to achieve the clearest possible results of the supernova. ...