| Astronomy and Astrophotography |
The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop (radio source W78, or Sharpless 103), a large but relatively faint supernova remnant. The source supernova exploded some 5,000 to 8,000 years ago, and the remnants have since expanded to cover an area roughly 3 degrees in diameter (about 6 times the diameter, or 36 times the area, of the full moon). The distance to the nebula is not precisely known, but recent evidence from the Far Ultraviolet Spectroscopic Explorer (FUSE) supports a distance of about 1,470 light-years. In modern usage, the names Veil Nebula, Cirrus Nebula, and Filamentary Nebula generally refer to all the visible structure of the remnant, or even to the entire loop itself. The structure is so large that several NGC numbers were assigned to various arcs of the nebula. There are three main visual components: The Western Veil (also known as Caldwell 34), consisting of NGC 6960 (the "Witch's Broom") near the foreground star 52 Cygni; The Eastern Veil (also known as Caldwell 33), whose brightest area is NGC 6992, trailing off farther south into NGC 6995 and IC 1340; and Pickering's Triangle (or Pickering's Triangular Wisp), brightest at the north central edge of the loop, but visible in photographs continuing toward the central area of the loop.
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| Capture, Guiding and Processing: M25C and HyperStar lens. Nebulosity to capture and PHD to guide. DSS for stacking and PS CS4 post-processing. Image details: 2.5 hours of 1, 2,3 and 4 minute exposures using an UHC-S filter. Telescope was a C11" Edge HD SCT on a CGEM mount. Guide camera was a Starlight Xpress Lodestar. |
LP filter was used to take 2 hours of subs, each with between 1 and 5 minute exposures. The image was done from very light polluted skies in my driveway in the Atlanta area. Imaging and Processing: Michael DeMita 7/2011 |
| SXVR-M25C and HyperStar len. 2.5 hours of 1-5 minute sub-frames. Dust and Scratch feature used to accentuate the gases and minimize stars. |
| 1200 resolution for the space minded. |
| 1200 resolution for the space minded. |
| No Dust and Scratch (full star) version. |
Pinwheel Galaxy, a nickname it shares with Messier 101. The Triangulum Galaxy is the third-largest member of the Local Group of galaxies, which includes the Milky Way Galaxy, the Andromeda Galaxy and about 30 other smaller galaxies. It is one of the most distant permanent objects that can be viewed with the naked eye. Photographs were taken using the M25C CCD camera through an Explore Scientific ED127 refractor at f7.5 using IDAS-LP filter. This is my first really long (7 hours) set of data - but was done from the horribly light polluted skies of Atlanta. 2,3,4,5 and 10 minute sub exposures were combined using DSS and post-processes with PS4. Regardless of the quality, I finally got my first 'pink' hydrogen gas tones to appear using this telescope and going long on the total exposures with a big galaxy. Guiding was accomplished using PHD and a Lodestar camera on a CGEM mount. Imaging was done with Nebulosity. Imaging and Processing: Michael DeMita 8/2011 |
| 1900 and 1200 resolutions to the right. |
| Most Recent Astrophotographic Work (Page 2): |
| I have long been interested in the this and I am now trying it. Bought my first scope on 11/1/10. The photography side of it is difficult and will take years to learn. See below for recent work and archives. |
| Click Page # below for most recent astrophotographic work - higher page # is more recent: |
distances of 7600 and 6800 light-years away, respectively, so they are also close to one another in space. The clusters' ages, based on their individual stars, are relatively young. NGC 869 is 5.6 million years old and NGC 884 is 3.2 million years old, according to the 2000 Sky Catalogue. In comparison, the Pleiades have an estimated age ranging from 75 million years to 150 million years. There are more than 300 blue-white super-giant stars in each of the clusters. The clusters are also blueshifted, with NGC 869 approaching Earth at a speed of 22 km/s (14 mi/s) and NGC 884 approaching at a similar speed of 21 km/s (13 mi/s). Their hottest main sequence stars are of spectral type.
exposures. The image was done from very light polluted skies in my driveway in the Atlanta area. Imaging and Processing: Michael DeMita 9/2011 |
| 1200 resolution for the space minded. |
| Capture, Guiding and Processing: M25C and ED127 refractpr at prime focus. Nebulosity to capture and PHD to guide. DSS for stacking and PS CS4 post-processing. Image details: 2.5 hours of 1, 2,3 and 4 minute exposures using an IDAS-LP filter. Telescope was a C11" Edge HD SCT on a CGEM mount. Guide camera was a Starlight Xpress Lodestar. |