For example, the Galileo orbiter, expected to begin mapping operations in the Jovian orbit in 1995, will carry a near-infrared mapping spectrometer (NIMS) capable of generating discrete images at numerous narrow wavelength intervals. The NIMS will be complemented by a multispectral imaging system ...
For example, the potassium-to-uranium ratio of the lunar mantle is about 15 of the value postulated for Earth's mantle. Potassium is a volatile element that would have been retained as vapor in the planetary nebula at lower temperatures than uranium. Likewise, lunar samples are depleted in ...
), but lunar, solar, and planetary imaging are game,such as this example,this one, andthis one. The SV305 Pro is certainly up to the task, especially for planetary and lunar imaging. I would consider theSV305 Pro(which is being sold together with the UV/IR filter) over the SV305C f...
These facts confirm that these two objects are PPNs in transition between the asymptotic giant branch and planetary nebula phases. Hubble Space Telescope imaging reveals that they are indeed bipolar nebulae. IRAS 17245-3951 clearly displays two lobes separated by a dust lane; thus it is viewed ...
But so far, HFG1 is a pre-cataclysmic binary. Everything is calm and peaceful in this planetary nebula binary star system! I'm reminded of the medieval guardians who would keep watch from a tower over their cities at night, and blow their horns at night at regular intervals all night, ...
Sh 2-188 is an example of strong interaction between a planetary nebula (PN)\nand the interstellar medium (ISM). Its structure is postulated to be the result\nof motion through the ISM. We present new H$\\alpha$ images from the Isaac\nNewton Telescope Photometric H$\\alpha$ Survey of ...
Some of the most spectacularly images ever taken by the Hubble Space Telescope have been of NGC 6543, which display a wealth of exquisite details across a large complex eye-like structure. In total, the extended halo of the nebula spans some 6.5 arc minutes of apparent sky. However, through...
I just started working on the Astronomical League's Planetary Nebula Observing Program using EAA/VA imaging and thought I would share some images of my initial progress. Here are the first 6 observations from last evening. Each includes a reduced 800x600 image of the original Starlight Live cap...
Some have suggested that the rings of Saturn can be used as an analog for the solar nebula from which the solar system formed. Although Jupiter, Saturn, Uranus, and Neptune are now all known to have ring systems, they are all different, and no common theory can explain all of them. ...
A possible explanation is that the xenon composition of the nebula changed over the lifetime of the disk due to changes in material supplied from the surrounding molecular cloud (Pepin et al., 1995; Pepin, 2003). An important parameter of this problem is the xenon-isotope composition of the...