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The full panorama is spectacular: https://1.bp.blogspot.com/-LK-I6WIOp8w/YE3ejvMEc8I/AAAAAAAAS80/drOhPmqx7SIgLTdvxNBIAbcYYylNp89HQCLcBGAsYHQ/s1588/Between_Cygnu
by ClosedPistachio 6y ago
The full panorama is spectacular: https://1.bp.blogspot.com/-LK-I6WIOp8w/YE3ejvMEc8I/AAAAAAAAS80/drOhPmqx7SIgLTdvxNBIAbcYYylNp89HQCLcBGAsYHQ/s1588/Between_Cygnus_and_Cepheus.jpg https://1.bp.blogspot.com/-LK-I6WIOp8w/YE3ejvMEc8I/AAAAAAAAS...
- amelius 6y agoAre those colors real, or just synthesized by the visualization technique?
- dr_orpheus 6y agoThey are synthesized, from the article "Image in mapped colors from the light emitted by an ionized elements, hydrogen = green, sulfur = red and oxygen = blue."
- amelius 6y agoWhat do the real colors look like?
- enriquto 6y agojust look up to the sky at night. They are so dim that you cannot really distinguish their hue.
- amelius 6y agoWhen I look up to the sky at night I just see reflections of the lights emitted by my city. It often is an orange glow.
- JohnJamesRambo 6y agoThis is too dystopian this early in the morning.
- elteto 6y agoHard to tell without being closer :) Nebulae might not even emit that strongly in the spectrum that we humans can see. A lot of these pictures are taken with special narrowband filters that isolate wavelengths for specific components, such as Oxygen or Hydrogen. Then these narrowband images are combined and assigned to the R, G, B channels. A popular palette is the "Hubble Palette" because, well, that is what the Hubble uses.
- nsilvestri 6y agoDepends on the filter used. I am assuming the author is using one of these hydrogens (probably Hα) and O-III and S-II. Each of these black-and-white images with this filter are used as the data for a single RGB channel in an image. Their wavelengths are, and would like like to the naked eye [1]: Hα (656 nm) bright red Hβ (486 nm) deep blue O-III (496 nm and 501 nm) greenish blue to green S-II (672 nm) deeper red The color mapping the author uses is called the Hubble Space Telescope pallet, where hydrogen = green, sulfur = red, and oxygen = blue. [1] http://pages.cs.wisc.edu/~yetkin/code/wavelength_to_rgb/wavelength.html http://pages.cs.wisc.edu/~yetkin/code/wavelength_to_rgb/wave...
- dylan604 6y agoDepends on what you mean by real colors. The light is so faint, that human eyes cannot make it out. However, long exposure photography with a CMOS sensor will bring out colors without any filters. Are those the real colors? There are tons of examples of these types of shots. Search for The World At Night (TWAN) for some great examples
- ImprovedSilence 6y agoTo the naked eye from earth, it looks black and white, and you wouldn't be able to see that much detail. What they "really" are is more complicated, as indicated by other responses.
- giuliomagnifico 6y agoReal colors is always a particular definition, because everyone of us see the colors differently, for the astrophotography is another different thing because the colors are made by frequencies of the light spectrum. Try to read this for more info: http://dslr-astrophotography.com/right-colors-astrophotos/ http://dslr-astrophotography.com/right-colors-astrophotos/ > Conclusion on color calibration: "There are multiple definitions of what it means to have ‘correct colors’ in your astrophotos. Therefor this always will be a matter of personal preference and everyone will have to figure out what their own vision on the matter is and pick a method of calibrating the colors accordingly"
- ImprovedSilence 6y agoVery interesting article, well worth the read.
- mnw21cam 6y agoThat's not the full panorama. Try https://1.bp.blogspot.com/-TqRxEAjrDYI/YFCLF-H8K3I/AAAAAAAAS-E/rj_avOwDgw0TP66RQURSDcDIOPPxJIscgCLcBGAsYHQ/s7023/000-GrandeMosaic120DegreesLONG.jpg https://1.bp.blogspot.com/-TqRxEAjrDYI/YFCLF-H8K3I/AAAAAAAAS... instead.
- lolptdr 6y agoDamn, this is impressive. Wish there were more annotations of other notable sky objects in addition to what's shown.
- mnw21cam 6y agoTry https://1.bp.blogspot.com/-_0wX_SbN2V0/YFBrGdGEasI/AAAAAAAAS9g/2gW1Ru2d34I66AZMVnqU_N9oHghcGzI1QCLcBGAsYHQ/s4984/000-GrandeMosaic120DegreesMAP.jpg https://1.bp.blogspot.com/-_0wX_SbN2V0/YFBrGdGEasI/AAAAAAAAS... for an image with more annotations.
- jcims 6y agoFor folks passing through it's the full panorama but at 7% of the full resolution.
- simonh 6y agoI like this one: https://www.eso.org/public/images/eso1242a/zoomable/ https://www.eso.org/public/images/eso1242a/zoomable/