Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

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Feb 28 2016 Taurus - The Bull By RA Catalog NGC 1312 IC IC IC IC 322 1918 1930 1931 M Her Object Type Glxy (R')SBb: sp Glxy Glxy Non-Existent Glxy D Glxy S0 Glxy S? Glxy Sab Non-Existent Glxy S? Glxy (R)SAB(rs)0/a: Glxy SBbc: Glxy S? Glxy Sbc Non-Existent Glxy S? Glxy SBb Mag Alias/Notes 15.4 15 14.8 15.3 14.2 15.2 15 14.8 14.7 15.3 14.7 15 15.4 14.3 14.7 14.5 15 STAR ...

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• http://www.wro.org/scodova/RNGC_List_by_Constellation_RA-Tau.pdf
• http://www.wro.org/scodova/RNGC_List_by_Constellation_RA-Cyg.pdf
• http://www.wro.org/neumann/RNGC_List_by_Constellation_RA-Cyg.pdf

Astronomy Picture of the Day . ... 15.05.2009 . ... Also cataloged as M97 , the 97th object in Messier's well-known list, its round shape along with the placement of two large, dark "eyes" do suggest the face of a staring owl . One of the fainter objects in Messier's catalog , the Owl Nebula is a planetary nebula , the glowing gaseous envelope shed by a dying sun-like star as it runs out of nuclear fuel . ... Publications with keywords: planetary nebula - M 97 . ... The Cats Eye Nebula . ...

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• The Soap Bubble Nebula
• The North America and Pelican Nebulas
• IC 4592: The Blue Horsehead Reflection Nebula

... In 1758, Charles Messier found this nebula while hunting for comets. When he noticed that, unlike a comet, it didn't move, he decided to create his now famous catalog (from his point of view a catalog of things that shouldn't be mistaken for comets). The supernova explosion that created the Crab was seen on about July 4 1054 AD. ... Notice how much more compact M 1 is than the Vela SNR which is 10 times older. ... NOAO 32k jpg . ... SEDS 196k gif . ... SEDS 32k gif . ... SEDS 60k gif . ...

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• APOD: 2006 August 16 - The North America and Pelican Nebulas
• APOD: 2009 May 15 - M97: The Owl Nebula
• APOD: 2012 October 26 - Reflection Nebula vdB1

Our team has obtained HST WFPC2 images of this prototypical example of a planetary nebula in a globular cluster. K 648 was cataloged as a star by Kustner, but identified spectroscopically as a planetary nebula by Pease, both in the 1920's. General WFPC2 view of M15 and K 648 (located near top left edge) . ... The nucleus is shown to have an unusually high mass of 0.60 Msun, and we argue that it must have undergone mass augmentation in a binary that has undergone mass transfer or a merger. ...

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• The Ever-changing Circumstellar Nebula around UW Centauri
• Scattering Properties of the Dust in the Reflection Nebula IC 435
• The Orion Nebula Cluster . as a Paradigm of Star Formation

... Meade Series 4000 Nebular Filters incorporate the very latest in interference coatings technology. ... Technical Basis of the Meade Broadband Nebular Filter: As shown in the transmission graph below, the Meade Broadband Nebular Filter strongly rejects the light of sodium- and mercury-vapor lights as well as natural airglow and auroral emissions. ... Meade Series 4000 Narrowband Nebular Filters . ... Meade Series 4000 Oxygen-III Nebular Filters . ... Meade Series 4000 Photo-Visual Color Filters . ...

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• Meade Instruments Corporation - #497 Autostar Computer Controller for ETX-90EC,

Stellarium 0.12.3 . ... Classes . ... FileљStructure . FileљList . FileљMembers . core . modules . Nebula.hpp . ... 51 љ virtual QString getInfoString ( const StelCore *core, const InfoStringGroup& flags) const ; . ... 54 љ virtual double getCloseViewFov ( const StelCore * core = NULL) const ; . 55 љ virtual float getVMagnitude ( const StelCore * core, bool withExtinction= false ) const ; . 56 љ virtual float getSelectPriority ( const StelCore * core) const ; . ...

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• Stellarium: Nebula Class Reference
• Stellarium: Member List
• Stellarium: NebulaMgr Class Reference

... Science . ... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Dust in the Crab Nebula Supernova Remnant . ... Data Handling and Products . ... Science Data Products Forum . ... The Crab Nebula supernova remnant, NGC 1952, is the remains of a massive star that underwent a supernova explosion in AD 1054 (see the HST image ). ... A thesis topic to study in detail the properties of the dust features in the Crab Nebula is outlined. ...

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• The Carina Nebula imaged by the VLT Survey Telescope
• VST images the Lagoon Nebula
• VISTA's infrared view of the Orion Nebula*

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Telescopes and Observatories . ... The majestic star-forming region in the Lagoon Nebula. The pale ring to the right is an internal reflection in the telescope.€а (Image credit: ESO/ VPHAS+/ V. Kalari and J. Vink (Armagh Observatory) . ... The 18 component images were further processed twice. ... Venu and his colleagues use images like this to identify individual young forming stars in the Lagoon Nebula and determine their ages. ...

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• The Lagoon Nebula (M8) reveals its secrets | Astronotes
• M78 off Orion: Bladerunner Nebula? | Astronotes
• Tarantula Nebula in stunning Hubble Image | Astronotes

... NGC 1501 - планетарная туманность Устрица (Oyster Nebula) или Верблюжий глаз (Camel's Eye Nebula) в околополюсном созвездии Жирафа (Camelopardalis) .. ... Просмотр полной версии : NGC 1501 - планетарная туманность Устрица (Oyster Nebula) или Верблюжий глаз (Camel's Eye Nebula) в околополюсном созвездии Жирафа (Camelopardalis) .. ... NGC 1501 Устрица (Oyster Nebula) или Верблюжий глаз (Camel's Eye Nebula) .: ...

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• De Ch. ?20 - отражательная туманность Messier 17 Omega Nebula / Swan Nebula
• IC 2118 Witch Head Nebula - отражательная туманность Голова ведьмы в созвездии
• NGC 1788 Fox Face Nebula & Lynds 1616 dark nebula - отражательная туманность

Discover the cosmos! ... 2000 December 29 . The Dark Horsehead Nebula . ... Image Processed by Al Kelly . Explanation: While drifting through the cosmos this magnificent interstellar dust cloud, sculpted by stellar winds and radiation, has chanced to assume a recognizable shape. Fittingly named The Horsehead Nebula it is embedded in the immense complex of star forming gas and dust surrounding the Orion Nebula some 1,500 light-years distant. ... About APOD | ...

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• The VLT Images a "Rectangular" Planetary Nebula (ESO PR Photo 21/98)
• APOD: July 13, 1999 - The Flame Nebula in Infrared
• APOD: 2000 April 24 - Reflection Nebula M78

This is a study of the interstellar matter associated with the Pleiades star cluster. ... Since that time, the projec