1 / 19

M57: The “Ring Nebula” or NGC6720

M57: The “Ring Nebula” or NGC6720. By: Ethan Kelfer. History. Discovered by French astronomer Antoine Darquier de Pellepoix in January 1779 He said that the Ring Nebula was " ...as large as Jupiter and resembles a planet which is fading. "

lisbet
Download Presentation

M57: The “Ring Nebula” or NGC6720

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. M57: The “Ring Nebula” or NGC6720 By: Ethan Kelfer

  2. History • Discovered by French astronomer Antoine Darquier de Pellepoix in January 1779 • He said that the Ring Nebula was "...as large as Jupiter and resembles a planet which is fading." • Later that month, Charles Messier found the same nebula while looking for comets. • The nebula was first photographed by the Hungarian astronomer Eugene von Gothard in 1886. Antoine Darquier de Pellepoix Charles Messier 

  3. M57 Facts • Magnitude: 8.8 • RA: 18h 53.6m • Dec: +33° 02´ • The nebula has been expanding at roughly 1 arcsecond per century • M57 is 2,300light-years away from Earth • The central star that produced M57 no longer produces its energy through nuclear fusion and is now becoming a compact white dwarf star. • 0.6Msun • The surface temperature of M57 is approximately 125,000K. • Currently it is 200 times more luminous than the Sun

  4. Location • Messier 57 is located south of the bright star Vega which forms the northwestern vertex of the Summer Triangle asterism

  5. Reason for Choosing • I really like nebulae • I thought the Ring Nebula looked cool • Has very vibrant-colored clouds of gas • Easy to locate with TheSky

  6. Telescope • 20” Cassegrain • SBIG STL 1001E Large Format Camera • 5- 3 Minute Dark Frames • 3 Minute Unfiltered Images (10) using a Barlow Lens • 3 Minute Images of Red (10), Green (8) ,& Blue-Filtered Images (10) • No flat field images were taken, simply because.

  7. CCDSoft • Create MasterDark  • Image Reduction/Calibration • Alignment of Images • Combining of Images -Red -Green -Blue -Clear

  8. Color-Filtered Images Red-Filtered Image  Green-Filtered Image Blue-Filtered Image  Unfiltered Image  (with Barlow Lens)

  9. Processing in Photoshop • Levels for each of the 4 images • Resize in Photoshop to 2048x2048 • Save as .tif files

  10. RegiStar • Align color-filtered images with unfiltered image in RegiStar because of Barlow Lens

  11. Final Resized Images Red-Filtered Final Image  Green-Filtered Final Image Blue-Filtered Final Image  Unfiltered Final Image (with Barlow Lens)

  12. Processing in Photoshop Cont’d For unfiltered - Mode: RGB Color  

  13. Color Combined Image Saved as M57Color.tif

  14. Combine Unfiltered Add & Median Image in Photoshop + • Layer Mask • Gaussian Blur • Magic Wand Tool & Lasso Tool • Flatten Image

  15. Combined Unfiltered Image

  16. Combine Color & Unfiltered Images +

  17. Final Processing • Flatten Image • Crop

  18. Bibliography • http://messier.seds.org/m/m057.html • http://www.universetoday.com/36306/messier-57/ • http://astropixels.com/planetarynebulae/M57-01.html • http://en.wikipedia.org/wiki/Messier_57 • http://www.astr.ua.edu/gifimages/ring.gif • http://apod.nasa.gov/cgi-bin/apod/apod_search • http://upload.wikimedia.org/wikipedia/commons/e/e8/Antoine_Darquier_de_Pellepoix.jpg • http://1.bp.blogspot.com/-_sSsJQ_3J_8/TmEO80c2Y4I/AAAAAAAAApM/GwYvk6HDYlo/s1600/Albireo%2B2a1.jpg • http://upload.wikimedia.org/wikipedia/commons/thumb/1/13/M57_The_Ring_Nebula.JPG/250px-M57_The_Ring_Nebula.JPG • http://www.phys.ttu.edu/~ozprof/20inskyview05.jpg • http://en.wikipedia.org/wiki/File:M57RingNebula.jpg

More Related