Posted on Nov 30, 2020
APOD: 2020 November 30 - Cygnus Without Stars
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Good morning and Happy Saint Andrew's Day, Rallypoint. Today's Astronomy Picture of the Day (APOD) is titled "Cygnus without Stars." This wide view of a portion of the constellation Cygnus was produced through use of a H-alpha filter (transmits only visible red light from glowing hydrogen atoms), a blue filter (transmits light emitted by energized oxygen) and digitally erasing all stars from the composite image. The result seems overly Impressionist, until you mouse over the image as see different nebulae identified. For comparison, you can take a peek at the September 20, 2007 APOD (https://apod.nasa.gov/apod/ap070920.html) and see the same view with stars.
APOD: 2020 November 30 - Cygnus Without Stars
Posted from apod.nasa.gov
NASA
Space
Science
Photography
Astronomy
Posted 4 y ago
Responses: 8
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Thank you for the astronomy share brother Bill, it is quite beautiful and would be a nice back drop for a sci-fi novel IMHO.
Like this image way better ;-)
Like this image way better ;-)
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Good "Thursday & Happy Saint Andrew's Day" Morning to my favorite astronomy enthusiast Maj William W. 'Bill' Price - I did not know it was "Saint Andrew's Day," so thank you for that mention Bill. Thanks for sharing the APOD Titled: "Cygnus without Stars!" Beautiful photo to start the day and imagination Bill. Have a great start to the new week and the end of November 2020! One month to go until 2021 - Let's hope for a much better upcoming year my friend.
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Celebrate Scotland and St Andrews Day
Thank you my friend for honoring Saint Andrew's Day Maj William W. 'Bill' Price and posting the NASA Astronomy Picture of the Day (APOD) for Monday, November 30, 2020 entitled "Cygnus without Stars"
Image: Cygnus Without Stars - Image Credit & Copyright - Bowen James Cameron
APOD Background
"Explanation: The sky is filled with faintly glowing gas, though it can take a sensitive camera and telescope to see it. For example, this twelve-degree-wide view of the northern part of the constellation Cygnus reveals a complex array of cosmic clouds of gas along the plane of our Milky Way galaxy. The featured mosaic of telescopic images was recorded through two filters: an H-alpha filter that transmits only visible red light from glowing hydrogen atoms, and a blue filter that transmits primarily light emitted by the slight amount of energized oxygen. Therefore, in this 18-hour exposure image, blue areas are hotter than red. Further digital processing has removed the myriad of point-like Milky Way stars from the scene. Recognizable bright nebulas include NGC 7000 (North America Nebula), and IC 5070 (Pelican Nebula) on the left with IC 1318 (Butterfly Nebula) and NGC 6888 (Crescent Nebula) on the right -- but others can be found throughout the wide field."
Happy St Andrews Day - Celebrate Scotland and St Andrews Day
https://www.youtube.com/watch?v=UwWLpaJNbQo
FYI Maj Robert Thornton Lt Col Charlie Brown COL Mikel J. Burroughs Sgt (Join to see) PO1 William "Chip" Nagel Maj Bill Smith, Ph.D. Lt Col John (Jack) Christensen SGT Denny Espinosa Sgt Vance Bonds MAJ Dale E. Wilson, Ph.D. TSgt David L. SPC Nancy GreenePO2 (Join to see) SSG Michael Noll SPC Margaret Higgins Maj Marty Hogan SMSgt David A Asbury SMSgt Lawrence McCarter
Image: Cygnus Without Stars - Image Credit & Copyright - Bowen James Cameron
APOD Background
"Explanation: The sky is filled with faintly glowing gas, though it can take a sensitive camera and telescope to see it. For example, this twelve-degree-wide view of the northern part of the constellation Cygnus reveals a complex array of cosmic clouds of gas along the plane of our Milky Way galaxy. The featured mosaic of telescopic images was recorded through two filters: an H-alpha filter that transmits only visible red light from glowing hydrogen atoms, and a blue filter that transmits primarily light emitted by the slight amount of energized oxygen. Therefore, in this 18-hour exposure image, blue areas are hotter than red. Further digital processing has removed the myriad of point-like Milky Way stars from the scene. Recognizable bright nebulas include NGC 7000 (North America Nebula), and IC 5070 (Pelican Nebula) on the left with IC 1318 (Butterfly Nebula) and NGC 6888 (Crescent Nebula) on the right -- but others can be found throughout the wide field."
Happy St Andrews Day - Celebrate Scotland and St Andrews Day
https://www.youtube.com/watch?v=UwWLpaJNbQo
FYI Maj Robert Thornton Lt Col Charlie Brown COL Mikel J. Burroughs Sgt (Join to see) PO1 William "Chip" Nagel Maj Bill Smith, Ph.D. Lt Col John (Jack) Christensen SGT Denny Espinosa Sgt Vance Bonds MAJ Dale E. Wilson, Ph.D. TSgt David L. SPC Nancy GreenePO2 (Join to see) SSG Michael Noll SPC Margaret Higgins Maj Marty Hogan SMSgt David A Asbury SMSgt Lawrence McCarter
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LTC Stephen F.
Red Hot Chilli Pipers St Andrew’s Day Perth Perthshire Scotland
Tour Scotland video of Red Hot Chilli Pipers at a St Andrew’s Day event on stage at King Edward Street on visit to Perth, Perthshire. Red Hot Chilli Pipers a...
Red Hot Chilli Pipers St Andrew’s Day Perth Perthshire Scotland
Tour Scotland video of Red Hot Chilli Pipers at a St Andrew’s Day event on stage at King Edward Street on visit to Perth, Perthshire. Red Hot Chilli Pipers are an ensemble consisting of pipers, guitarists, keyboards and drummers. They perform a fusion of traditional pipe tunes and contemporary pieces. The band members have competed at the highest level of bagpiping for many years.
https://www.youtube.com/watch?v=tae310_UTtI
FYI SSG Franklin BriantSgt John H. CW5 Jack Cardwell SGT David A. 'Cowboy' Groth SGT (Join to see)SSG Jeffrey LeakeSPC Michael Duricko, Ph.D SPC Matthew Lamb CPT Gurinder (Gene) Rana SSG Samuel Kermon LTC Wayne Brandon Maj Kim Patterson Sgt (Join to see) SSG Samuel KermonMSgt Paul Connors SPC Margaret Higgins SPC Nancy Greene
Tour Scotland video of Red Hot Chilli Pipers at a St Andrew’s Day event on stage at King Edward Street on visit to Perth, Perthshire. Red Hot Chilli Pipers are an ensemble consisting of pipers, guitarists, keyboards and drummers. They perform a fusion of traditional pipe tunes and contemporary pieces. The band members have competed at the highest level of bagpiping for many years.
https://www.youtube.com/watch?v=tae310_UTtI
FYI SSG Franklin BriantSgt John H. CW5 Jack Cardwell SGT David A. 'Cowboy' Groth SGT (Join to see)SSG Jeffrey LeakeSPC Michael Duricko, Ph.D SPC Matthew Lamb CPT Gurinder (Gene) Rana SSG Samuel Kermon LTC Wayne Brandon Maj Kim Patterson Sgt (Join to see) SSG Samuel KermonMSgt Paul Connors SPC Margaret Higgins SPC Nancy Greene
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