 The Milky Way looking east. This is a single 25-s stationary full-color exposure, taken with a Canon-EOS 5D DSLR camera (modified for astrophotography by Hutech) at ISO 1600 through a Canon 15mm f/2.8 fisheye lens by F. Ringwald. |
 The Milky Way looking south. This is a single 25-s stationary full-color exposure, taken with a Canon-EOS 5D DSLR camera (modified for astrophotography by Hutech) at ISO 1600 through a Canon 15mm f/2.8 fisheye lens by F. Ringwald. |
 The best Perseid meteor so far, 2013 August 11-12. This is a single 25-s stationary full-color exposure, taken with a Canon-EOS 5D DSLR camera (modified for astrophotography by Hutech) at ISO 1600 through a Canon 15mm f/2.8 fisheye lens by F. Ringwald. |
 The Sun at the Vernal Equinox and Solstices, taken in 2014 and 2015. This is a composite of 1/4-s stationary, full-color exposures through a Thousand Oaks Type 2+ solar filter, with a composite background taken with automatic snapshots at morning and evening civil twilight, taken with a Canon-EOS 60Da DSLR astrocamera at ISO 1600 through a Sigma 4.5mm f/2.8 EX DC HSM circular fisheye lens by F. Ringwald. |
 The Summer Triangle. This is a single 25-s stationary full-color exposure, taken with a Canon-EOS 60Da DSLR astrocamera at ISO 1600 through a Sigma 4.5mm f/2.8 EX DC HSM circular fisheye lens by F. Ringwald. |
 The lunar eclipse of 2014 October 8 PDT, full-color images taken with a Canon EOS 60Da astrophotography DSLR camera at ISO 100 with exposure times between 1/640s and 8s through an EF 100-400mm f/4.5-5.6L IS USM lens with f=200mm at f/5.6 by F. Ringwald |
 M16, the Eagle Nebula in Serpens, 2010 June 13, full-color (L made from H alpha 61 x 30s, R 25 x 30s, G 25 x 30s, B 41 x 30s) unguided STL-11000M image at f/8 and post-processed with Neat Image by F. Ringwald, processed by Gerald Rude. |
 M1, the Crab Nebula in Taurus, 2008 September 26 and October 22, 24, and 26, full-color (L 23 x 180s, R 9 x 180s + H alpha 9 x 180s, G 5 x 180s, B 9 x 180s) unguided STL-11000M image at f/8 and post-processed with Neat Image by F. Ringwald. |
 The spectrum of Vega, 2009 June 17. This is an intensity versus wavelength plot, with a dispersion of 0.72 nm/pixel and a spectral resolution of 1.6 nm (16 Angstroms). It was extracted from a single dark-subtracted 0.1-s STL-11000M exposure, taken through a transmission grating taken from a Rainbow Optics Star Spectroscope and fitted into the DFM filter wheel by F. Ringwald. |
 The spectrum of Vega, 2009 June 17. The image of Vega is to the right of the spectrum. This is a single dark-subtracted 0.1-s STL-11000M exposure, taken through a transmission grating taken from a Rainbow Optics Star Spectroscope and fitted into the DFM filter wheel by F. Ringwald. |
 h and chi Persei, the double cluster in Perseus, 2008 September 28. This is a median-combined composite of 5x300-s unguided, dark-subtracted, full-color exposures, taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 800 through a Canon EF 200mm f/2.8L II USM lens by F. Ringwald. |
 M31, the Great Galaxy in Andromeda, 2008 September 27. This is a median-combined composite of 5x600-s unguided, dark-subtracted, full-color exposures, taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 800 through a Canon EF 200mm f/2.8L II USM lens and unsharp-masked by F. Ringwald. |
 NGC 2237-39, 44, and 46, Caldwell 49, the Rosette Nebula in Monoceros the Unicorn, 2008 September 28. This is a median-combined composite of 7x300s unguided, dark-subtracted, full-color exposures, taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 1600 through a Canon EF 200mm f/2.8L II USM lens by F. Ringwald. |
 The Heavenly G, also known as the Galactic Anti-Center, 2008 November 30. This is a median-combined composite of 3x600s unguided, dark-subtracted, full-color exposures, taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 400 through a Canon EF 15mm f/2.8 fisheye lens and processed with GradientXterminator by F. Ringwald. |
 The northern Milky Way, centered on Cassiopeia, 2008 November 30. This is a median-combined composite of 3x600-s unguided, dark-subtracted, full-color exposures, taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 400 through a Canon EF 15mm f/2.8 fisheye lens by F. Ringwald. |
 The Heavenly G, also known as the Galactic Anti-Center, 2008 November 30. This is a median-combined composite of 9x30s unguided, dark-subtracted, full-color exposures, taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 1600 through a Canon EF 15mm f/2.8 fisheye lens and processed with Photoshop's auto-curves and auto-color-adjust functions by F. Ringwald. |
 NGC 7293, the Helix Planetary Nebula in Aquarius, 2008 September 25 and 26, full-color (L 27 x 180s through an Astrodon Clear filter + H alpha 29 x 180s, R 9 x 180s, V 5 x 180s, B 9 x 180s) unguided STL-11000M image at f/8 by F. Ringwald and processed by James Rubio. |
 M27, the Dumbbell Planetary Nebula in Vulpecula (the Fox with a Duck), 2008 September 23, 25, and 26, full-color (L 27 x 60s through an Astrodon Clear filter + H alpha 9 x 180s and gamma-log scaled, R 9 x 60s + H alpha 9 x 180s, V 5 x 50s, B 9 x 60s) unguided STL-11000M image at f/8 by F. Ringwald and processed by Cleotilde Ruiz. |
 M27, the Dumbbell Planetary Nebula in Vulpecula (the Fox with a Duck), 2008 September 23, 25, and 26, full-color (L 27 x 60s through an Astrodon Clear filter and gamma-log scaled, R 9 x 60s + H alpha 9x180s, V 5 x 50s, B 9 x 60s) unguided STL-11000M image at f/8 by F. Ringwald and processed by Cleotilde Ruiz. |
 NGC 253, the Silver Coin Galaxy in Sculptor, 2008 September 24, full-color (L 27 x 60s through an Astrodon Clear filter + H alpha 9 x 60s, R 9 x 60s, V 5 x 60s, B 9 x 60s) unguided STL-11000M image at f/8 by F. Ringwald and processed by Cleotilde Ruiz. |
 NGC 1275 and the Perseus Cluster of Galaxies, 2008 September 25, full-color (L 17 x 180s through an Astrodon Clear filter, R 9 x 180s, V 5 x 180s, B 9 x 180s) unguided STL-11000M image at f/8 by F. Ringwald and processed by James Rubio. |
 IC 1613, dwarf irregular Local Group galaxy in Cetus the Whale , 2008 September 26 and October 26, full-color (L 35 x 180s through an Astrodon Clear filter + H alpha 9 x 180s, R 9 x 180s, V 5 x 180s, B 9 x 180s) unguided STL-11000M image at f/8 by F. Ringwald and processed by James Rubio. |
 NGC 6888, the Crescent Nebula in Cygnus, 2008 June 7, full-color (L 15 x 180s through an Astrodon Clear filter + H alpha 9 x 180s, R 9 x 180s, V 5 x 180s, B 9 x 180s) unguided STL-11000M image at f/8 by F. Ringwald. |
 Five-day-old Moon, 2008 June 8. This is a single full-color, unguided, unsharp-masked 1/30-s exposure with a Canon-EOS 20Da DSLR astrocamera at ISO 100 through the Meade 127 ED APO f/7.5 guidescope by F. Ringwald. First guidescope image! |
 The North America Nebula (left) and the Gamma Cygni Nebula (right), 2008 June 8. This is a median-combined composite of 5x600s unguided, dark-subtracted, full-color exposures, taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 800 through a Canon EF-S 17-85mm f/4-5.6 zoom lens with F=85mm at f5.6 by F. Ringwald. First piggybacked image! |
 M101, the Whirlpool Galaxy in Ursa Major, 2008 June 5, full-color (L 9 x 180s through an Astrodon Clear filter, R 14 x 180s + H alpha 14 x 180s, V 8 x 180s, B 14 x 180s) unguided STL-11000M image at f/8 by F. Ringwald. First color image! |
 Abell 2151, cluster of galaxies in Hercules, 2008 June 6, full-color (L 15 x 180s through an Astrodon Clear filter, R 7 x 180s, V 5 x 180s, B 8 x 180s) unguided STL-11000M image at f/8 by F. Ringwald. |
 Ancient globular star clusters NGC 6522 and 6528 in Sagittarius, 2008 June 6, full-color (L 15 x 60s through an Astrodon Clear filter, R 7 x 60s, V 5 x 60s, B 7 x 60s) unguided STL-11000M image at f/8 by F. Ringwald. |
 Fresno State's 16-inch telescope at Sierra Remote Observatories, 2008 June 6. Snapshot by F. Ringwald. |
 Fresno State's 16-inch telescope at Sierra Remote Observatories, 2008 June 6. Snapshot by F. Ringwald. |
 Near the Galactic Center, 2007 June 18. This was a single dark-subtracted, autoguided 600-s exposure taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 400 through a Canon EF-S 17-85mm f/4-5.6 zoom lens with F=53mm at f5.6 and unsharp-masked by F. Ringwald. |
 The North Circumpolar Sky, 2007 June 19. This was a single unguided 30-s exposure taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 1600 through a Canon EF 15mm f/2.8 fisheye lens by F. Ringwald. |
 An Iridium flare in the North Circumpolar Sky, 2007 June 19. This was a single 120-s exposure taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 1600 through a Canon EF 15mm f/2.8 fisheye lens by F. Ringwald. |
 Our site mascot Mr. Red, a Red-Tailed Hawk, 2007 June 18, snapshot with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) through a Canon EF 200mm f/2.8L II USM lens by F. Ringwald. |
 The Moon and planets after sunset, 2007 June 19, 9:28 PDT. Can you spot the sickle of Leo?. This was a single 5-s exposure taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 400 through a Canon EF-S 17-85mm f/4-5.6 zoom lens with F=26mm at f4.5 with titles added with Photoshop by F. Ringwald. |
 The Milky Way with an Iridium Flare and an airplane trail, 2007 June 19. This was a single 120-s exposure taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 1600 through a Canon EF 15mm f/2.8 fisheye lens by F. Ringwald. |
 The DFM Engineering 16-inch telescope, 2007 December 16, snapshot by Greg Morgan. |
 The DFM Engineering 16-inch telescope, 2007 December 16, snapshot by Greg Morgan. |
 The DFM Engineering 16-inch telescope, 2007 December 16, snapshot by Greg Morgan. |
A Gallery of Images Taken near Bald Mountain.
This site is at an altitude of 1910 m (6266 feet), about 10 miles from Shaver Lake.
 The Summer Triangle, 2006 July 15. This was a single dark-subtracted, autoguided 600-s exposure taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 400 through a Canon EF 15mm f/2.8 fisheye lens by F. Ringwald. |
 Looking down on the temperature inversion over Fresno, which Greg Morgan calls "the Yuck layer", 2006 July 28. This was a snapshot with a Canon 20Da DSLR camera by F. Ringwald. |
 The Northern Milky Way, 2006 August 26. This was a single dark-subtracted, unguided 1200-s exposure taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 200 through a Canon EF 15mm f/2.8 fisheye lens by F. Ringwald. |
 Mel Helm at the Bald Spot, 2006 July 28. This was a snapshot with a Canon 20Da DSLR camera by F. Ringwald. Click here for Melvin R. Helm Astrophotography. |
 The Circumpolar Constellations, 2006 July 28. This was a single dark-subtracted, unguided 60-s exposure taken with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 1600 through a Canon EF 15mm f/2.8 fisheye lens by F. Ringwald. |
 Greg Morgan ready for a night of observing, 2006 July 1. This was a snapshot with a Canon 20Da DSLR camera by F. Ringwald. Click here for Old Star Light, Greg's astrophotography website. |
A Gallery of Images Taken at Courtright Reservoir.
Click here for images of Courtright during the daytime.
This site is at an altitude of 2500 m (8200 feet) in the Sierra Nevada.
 City Light Devouring the Milky Way, 2006 July 21. This is a single dark-subtracted, 1200-s autoguided exposure with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 200 through a Canon EF 15-mm f/2.8 fisheye lens by F. Ringwald. |
 The Galactic Center, 2006 July 21. This is the same exposure as at left, cropped and with gradients removed with GradientXterminator and Photoshop by F. Ringwald. |
 The Central Valley Astronomers at Courtright, 2006 June 24. From left to right are Dale Lohrmann, Greg Morgan (sitting), Dexter Chumley, Clarence Noell, and Fred Lusk. This is a hand-held 3.2-s exposure with a Canon 20Da DSLR camera at ISO 1600 through an image-stabilized Canon EF-S 17-85mm f/4-5.6 zoom lens with F=20 mm at f/4.0 by F. Ringwald. |
 North Circumpolar Star Trails, 2005 September 3. This is a several-minute exposure on Agfacolor Vista 400 film in a Promaster 2000PK 35-mm SLR camera through a Promaster zoom lens with F=35 mm at f/3.5 with the 4"x5" print scanned at 600 dpi, resampled, and reduced with Photoshop by F. Ringwald. |
 Greg Morgan Observing, 2005 September 3. This is a 0.5-s exposure on Agfacolor Vista 400 film in a Promaster 2000PK 35-mm SLR camera through a Promaster zoom lens with F=35 mm at f/3.5 with the 4"x5" print scanned at 600 dpi, resampled, reduced, and contrast-enhanced with Photoshop by F. Ringwald. |
 The Zodiacal Light, also called "the False Dawn", 2005 September 3. This is a several-minute exposure on Agfacolor Vista 400 film in a Promaster 2000PK 35-mm SLR camera through a Promaster zoom lens with F=35 mm at f/3.5 with the 4"x5" print scanned at 600 dpi, resampled, and reduced with GradX and Photoshop by F. Ringwald. |
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 North Circumpolar Star Trails, 2005 September 3. This is a several-minute exposure on Agfacolor Vista 400 film in a Promaster 2000PK 35-mm SLR camera through a Promaster zoom lens with F=35 mm at f/3.5 with the 4"x5" print scanned at 600 dpi, resampled, and reduced with Photoshop by F. Ringwald. |
 Star trails with meteor (center bottom), 2005 September 3. This is a several-minute exposure on Agfacolor Vista 400 film in a Promaster 2000PK 35-mm SLR camera through a Promaster zoom lens with F=35 mm at f/3.5 with the 4"x5" print scanned at 600 dpi, resampled, and reduced with Photoshop by F. Ringwald. |
 Orion and Taurus rising, 2005 September 3. This is a several-minute exposure on Agfacolor Vista 400 film in a Promaster 2000PK 35-mm SLR camera through a Promaster zoom lens with F=35 mm at f/3.5 with the 4"x5" print scanned at 600 dpi, resampled, and reduced with Photoshop by F. Ringwald. |
 The constellation Hercules, 2005 September 3. This is a 30-s exposure with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 400 through a Canon EF-S 18-55mm f/3.5-5.6 zoom lens with F=18mm at f/3.5 by F. Ringwald. |
 The constellation Capricornus, 2005 September 3. This is a 90-s exposure with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 400 through a Canon EF-S 18-55mm f/3.5-5.6 zoom lens with F=18mm at f/3.5 by F. Ringwald. |
 Orion and Auriga rising, 2005 September 3. This is a 300-s exposure with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 400 through a Canon EF-S 18-55mm f/3.5-5.6 zoom lens with F=18mm at f/3.5 by F. Ringwald. |
A Gallery of Images Taken at Hensley Lake State Park.
This site is at an altitude of 600 feet and is the regular observing site of the Central Valley Astronomers.
 The Heavenly G, also known as the Galactic Anti-Center, 2006 October 21. This is a single unguided 443-s exposure with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 400 through a Canon EF 15-mm f/2.8 fisheye lens by F. Ringwald. |
 A meteor from the Orionid shower, from the trail left by Halley's Comet, 2006 October 21. This is a single unguided 30-s exposure with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 1600 through a Canon EF 15-mm f/2.8 fisheye lens by F. Ringwald. |
 The Zodiacal Light, just before dawn on 2006 October 22. This is a 209-s exposure with a Canon-EOS 20Da DSLR camera at ISO 800 through a Canon EF-S 17-85mm f/4-5.6 zoom lens with F=17mm at f4.0 by F. Ringwald. |
 George and Greg Morgan, 2007 March 17. Snapshot by F. Ringwald. |
 The constellation Cassiopeia, 2006 October 21. This is a single autoguided 1200-s exposure with a Canon-EOS 300D Digital Rebel DSLR camera (modified for astrophotography by Hutech) at ISO 400 through a Canon EF-S 17-85mm f/4-5.6 zoom lens with F=44mm at f5.0 by F. Ringwald. |
Click here to go to the Main Gallery
Last updated 2024 April 22. Web page by Dr. Ringwald (ringwald[at]csufresno.edu and replace [at] with @)
Department of Physics, California State University, Fresno. Please read this disclaimer.