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Messier 97, the owl nebula558 viewsMessier 97, aka the owl nebula, in Ursa Major is described in Admiral W. H. Smyth’s A Cycle of Celestial Objects (2nd Ed, 1881) as a “large planetary nebula, or globular collection of nebulous matter.” M97 has a three-shell structure; the red color of the Ha emission of the second shell is visible in the image. Image is a total of 8 hr exposure taken with an Astro-Physics 130mm f8 refractor and SBIG SR2000xcm on an AP 1200 mount (24 x 20 min lights, 30 darks, 64 flats, 64 flat darks, 64 bias) calibrated in Images Plus 5.0; color balance in PixInsight 1.8; Photoshop CS6
Messier 13-Globular Cluster in Hercules551 viewsWe were showing a number of globular clusters at our star party events at Oliver Lee State Park. Here is an image of M (Messier) 13 taken with the 6" SCT and a Canon Rebel XSi (15 min). (retouched after I got a new monitor)
M20 (Trifid Nebula)545 viewsM20 (Trifid Nebula) located in the constellation of Sagittarius. I could not get guiding to work so this photo is composed of 42 30sec exposures at ISO6400 using a Canon EOS 60a.
Mercury Transit 1 - Nov. 8, 2006545 viewsThis shot was taken near the end of its transit.
St2000XCM-M33 10-13-07543 viewsThis is a single 10 minute image. It shows better detail than the last one, just not enough signal.
Markarian's Chain540 viewsMarkarian's Chain is found in the constellations Coma Berenices and Virgo. The two brightest members are Messier 84 and 86 in the upper right hand portion of the photo. The two galaxies close in proximity below them are known as the "Eyes." The one that is very irregular in shape is NGG 4438 (also cataloged as Arp 120 in Arp's Catalog of Peculiar Galaxies) that as been suggested to be the result of the in-progress merger of two galaxies. 2.6 h (32 x 300 sec) total exposure; Takahashi E-180; Canon 20Da
Messier 27 through Ha, OIII, and SII filters539 viewsMessier 27 is a nebula found in the constellation Vulpecula, often shown in the summer and early fall at our Oliver Lee star parties. This image is through narrowband filters, where Hydrogen alpha is mapped to green (2 hr 25 min combined exposure); Oxygen, OIII, is mapped to blue (3 hr 15 min combined exposure), and Sulfur, SII, is mapped to red (5 hr 40 min combined exposure); taken with a Takahashi FSQ106ED and SBIG ST2000xm camera with Baader filters.
NGC 6820 and 6823539 viewsNGC 6823 is an open cluster in Vulpecula, whose center contains 9th magnitude stars along with fainter members that is immersed in the faint emission nebula NGC 6820. Photographed with a Takahashi Epsilon 180 f/2.8 and Canon 20Da DSLR on a Paramount (Ten 5-minute exposures at ISO 800; calibrated, aligned, combined and processed in Images Plus V 3.80 (DDP stretch) followed by Adobe Photoshop CS4).
The Active Sun in Hydrogen Alpha537 viewsThis image was taken through a 40mm Coronado PST of the Sun on 12/27/2011 at 1925UT. The photograph is centered on the hydrogen alpha emission line at 656.28 nanometers (nm) and shows the chromosphere. Active Region 1384 is the dark region near the center of the photograph. A very large prominence is seen erupting along the rim of the Sun on the right.
M57536 viewsMessier 57 the Ring Nebula appears in the northern constellation of Lyra is a prominent example of a planetary nebula. This is a shell of ionized gas expelled into the surrounding interstellar medium by a red giant star, which was passing through the last stage in its evolution before becoming a white dwarf. The distance is 2300 light years.
Messier 15535 viewsThe globular cluster Messier 15 is found in the constellation Pegasus. Globular clusters are large typically spherical clusters of stars gavitationally bond together. Current estimates suggest M15 contains at least 450,000 solar masses with a very dense center. Image taken with a 178 mm f/9 Astro-Physics refractor and a modified Canon 50D DSLR on an Astro-Physics 1200 mount (70 x 60 sec lights; 30 darks; 66 flats; Images Plus and Adobe Photoshop CS5 software).
Polaris Star Trails534 viewsMy first attempt at this. I will upload a new one later. This is a 10min shot.
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