Category: Nebula

9/9/2007   2-4 AM   Latitude: 43° 48.407′  N    Longitude:  122° 43.528′ West  3252 feet;  June Mountain  22  miles, South of Dexter. OR. Seeing: E, Transparency : 7  Bortle: 2, SQM:21.91 Telescopes / Optics:  TEC 140mm f/7  980mm  Mount: Astrophysics AP1200 GOTO    Camera: SBIG ST8xme CCD & CFW9     FOV:  0.81º x 0.54º  FOV:  28’ 48”’ x 19’12” FWHM: 3.95”  Filter: Astrodon LRGB series E Gen. 2 (Ha 9nm Schuler. Information:  NGC 6888 (Crescent Nebula) Captured with CCDSoft. LRGB=3 x 300 seconds;  Ha (9nm)= 3 x  600 seconds  -20°c. Total L (Ha) RGB= 90 minutes Processed with CCDStack2 and Photoshop CS6   

NGC 6888 called The Crescent Nebula, also known as Caldwell 27 and Sharpless 105. It lies within the constellation of Cygnus, approximately 5,000 light years away. NGC 688 shines at an apparent magnitude +7.4 and 18’ x 12’ in size. It is formed by stellar wind from the bright star HD 192163 colliding with slower ejected wind when it became a Red giant approximately 300,000 years ago. HD192163 is the center bright star also called a Wolf-Ravet star (WR 136). This star now sheds the Sun’s mass every 10,000 years. Burning fuel at a fast rate and nearing it’s end. This star will go supernova.

Veil Nebula NGC 6960, 08/17/2001 1:35 AM Latitude: 44˚ 17’ 56” N Longitude: -120˚ 08’ 30” W 5,030 ft. Oregon Star Party 45 mi. E. Prineville , OR . Seeing: E Transparency: 7; Bortle: 1 SQM: 21.96. Telescopes / Optics: Tokina 300mm f/2.8 Mount : Losmandy G11 C-11 Piggyback. Camera: Canon F1 Exposure: 16 min. FOV: 6º 49’ 48” x 4º 33’ 0” Filter: UV Information: Manually guide through Celestron 11” SCT, Film camera piggyback. Used “bright screen” and canon angle finder to focus on nearby star. Elite Chrome 200 slide, film push process at Photo Oregon. Slide # 19 scanned, 4 iterations with Nikon 5000 LED film scanner. Processed using Photoshop and CCDStack

Veil Nebula NGC 6960 found in The constellation Cygnus ruminants of supernova 10 to 20 thousand years age.  The Veil Nebula is 2,400 light years away would have been as bright as Venus during crescent stage, magnitude -4.92.  20 times more mass than our sun.  Filament with Bright star is NGC 6960 also called “Witch’s Broom” near 52 Cygni magnitude of 4.2, Western Veil. Eastern Veil’s bright area is referred to as NGC 6992 trailing off into NGC 6995 known as the “Network Nebula”
 

Rosette Nebula NGC 2244 / Caldwell 49 located in the constellation Monoceros. This is an Open Cluster surrounded by nebulosity that formed the stars in the cluster.  This nebula-Star Cluster shines at an apparent brightness of magnitude 9 and the nebulosity is like a red wreath when vied by RGB..   The Rosette Nebula is 65 light years across and lies 5,200 light years away.  This Nebula has several regions, NGC 2237, 2238, 2239,2246.  The entire Nebula is 130 light years in diameter.  Over 2500 young stars lie within this star forming nebula over 10,000 solar masses. The Rosette Nebula is rather large in the night sky at 1.3 degrees in diameter.  The full moon is ½ of a degree.  Imaging with 3-4 inch refractors reveal much detail.  Larger scopes are need for more detailed views through the eyepiece.