M 57

M57—The Ring Nebula

M57—The Ring Nebula (NGC 6720)

Image Data

Telescope: 10″ Aries f/15 Maksutov-Cassegrain on Astro-Physics 900GTO German Equatorial
Accessories: Moravian G1-0300 as Off-Axis Guider, 0.67X Astro-Physics CCD Telecompressor
Resolution: 0.42″/pixel
Instrument: SBIG ST-4000XCM
Exposures: 30×2 min RGB
Filter(s): IDAS LPS
Exposure Date: 29 June 2010
Seeing, FWHM: 1.6″
Processing Software: MaximDL, PixInsight, Photoshop
Image Acquisition Software: MaximDL, TheSky6, CCDAutoPilot, FocusMax, PinPoint

Object Data

Constellation: Lyra
Type: Planetary Nebula

Processing Procedure

This image uses R channel as Luminosity (RRGB), post-processed using HDR Wavelet Transforms in PixInsight. No color calibration has been done. Calibration only with dark and bias frames.

 

NASA/ADS Query

1978ApJ...219L..33B Detection of molecular hydrogen emission from five planetary nebulae Beckwith, S.; Gatley, I.; Persson, S. E.; Astrophysical Journal, Part 2 - Letters to the Editor, vol. 219, Jan. 1, 1978, p. L33-L35, L37, L38. Jan 1978
1970ApJ...161..917A The Spectra of Thirty-Three Gaseous Nebulae in the Yellow-Green Region Obtained with an Electronic Camera. Aller, Lawrence H.; Walker, Merle F.; Astrophysical Journal, vol. 161, p.917 Sep 1970
1997A&A...324.1123B The chemical evolution of planetary nebulae. Bachiller, R.; Forveille, T.; Huggins, P. J.; Cox, P.; Astronomy and Astrophysics, v.324, p.1123-1134 Aug 1997
1983ApJ...267..630B The ionization structure of planetary nebulae. III - NGC 7009 Barker, T.; Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 267, April 15, 1983, p. 630-637. Apr 1983
1978ApJ...222..384G Electron collisional excitation cross sections for Fe III and Fe VI and iron abundances in gaseous nebulae Garstang, R. H.; Robb, W. D.; Rountree, S. P.; Astrophysical Journal, Part 1, vol. 222, May 15, 1978, p. 384-397. May 1978
2002AJ....123.3329O Knots in Nearby Planetary Nebulae O'Dell, C. R.; Balick, B.; Hajian, A. R.; Henney, W. J.; Burkert, A.; The Astronomical Journal, Volume 123, Issue 6, pp. 3329-3347. Jun 2002
1997ApJ...477..218G 3He in Planetary Nebulae: A Challenge to Stellar Evolution Models Galli, Daniele; Stanghellini, Letizia; Tosi, Monica; Palla, Francesco; The Astrophysical Journal, Volume 477, Issue 1, pp. 218-225. Mar 1997
1960ApJ...131..537M Electron Densities in Two Planetary Nebulae. Minkowski, R.; Osterbrock, D.; Astrophysical Journal, vol. 131, p.537 May 1960
1994ApJ...421..600K The bipolar symmetry of ring-like planetary nebulae: Molecular hydrogen emission from halos Kastner, Joel H.; Gatley, Ian; Merrill, K. M.; Probst, R.; Weintraub, David; Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 421, no. 2, p. 600-604 Feb 1994
1960ApJ...131..541O Electron Densities in Planetary Nebulae. Osterbrock, Donald E.; Astrophysical Journal, vol. 131, p.541 May 1960

Other 114 records retrieved but not showed.

The original query on ADS is available HERE.
Service offered by The SAO/NASA Astrophysics Data System.

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