Yesterday I went for the fourth time the Three Peaks. The weather forecast said that it would be open to the 23, but that there were more clouds and thunderstorms to the south And it did. The panoramic photo (click to enlarge) is made at 23.09, when the sky was opening up. As expected in the South were thunderstorms and clouds that were visible along the horizon line. Also this time so I could not see the true pontenzialiutà of this site, but I've had a taste, with the beautiful Milky Way down on the horizon the clouds. Kaus Australis, the star at the bottom of the "teapot" when the photo is 5 ° in height (azimuth 206 °). I estimate that the horizon in that direction is about 2 ° high.
peaks at about 7 ° South are high. E 'visible Sgr theta-1, which at the time of the photo is 8 ° high. (Azimuth 184 °). Towards the eastern horizon
down again. Except for some peak on the horizon is an average of 2 ° -3 ° high.
On this occasion, you see clouds up to about 6-7 ° high. I think they are clouds over the plains or at least halfway, and illuminated from beneath the plains. Misurina is visible in the lower right, accompanied by a halo of light that is the hotel that I have photographed lighthouse in the previous article. I expect the sky disappearing clouds and moisture to become much better until the horizon line. When the fog disappeared Misurina disappeared on the lights of the lighthouse (though I think it's one of the cases to apply once the new regional law The ILO).
course, if the horizon was covered by mountains south there would be no view of distant clouds. But it would be just a way to ignore the problem. The plain to the south is 140 km. A South East 90. TITUS Overall, the picture does not seem dissimilar from those of average Americans p arches, where 200 km produce flashes of light along the horizon as these.
When the sky finally opened at all, the Milky Way at the zenith was well defined, the lot of North blackest coal, and the SQM measured between 21:55 and 21.60 (the Milky Way). I do not think can score more, because that is the light of the Milky Way. I estimate a visual magnitude limite di circa 6.8, usando le stesse stelle di riferimento che ho detto in precedenza.
Verso il mattino si è vista la Luce zodiacale molto bene. Sembrava quasi inquinamento luminoso, ed era molto più luminosa della stessa Via Lattea. Inutile dire che non era colorata di giallo né era percepibile la presunta differenza di colore con la Via Lattea (bianca), come invece direbbe Bortle (non sono il primo a osservare che su questo punto della colorazione la scala di Bortle ha qualche imprecisione). La Via Lattea invernale appariva come una fascia chiara nel cielo. Sotto c'era una fascia sensibilmente più scura, circa in corrispondenza di Andromeda. Sotto ancora, in Toro, Ariete, Persci c'era di nuovo del chiaro. Dalla parte simmetrica del cielo, West, more distance from the Milky Way in the sky was dark as Andromeda and even more bright and nonc'er no band corresponding to the Taurus-Pisces. The horizon was polluted South
as mentioned, but it must be said that the picture was taken with prolonged exhibitions Exhibitions (30 ", ISO 1600, F3, 5) and does not reflect the real live feeling. In fact, looking at the South could not be discern the clouds like in the picture, but only a slight flare. Least stood out the color of the clouds. The clouds at the top, like the one that covers Jupiter, appeared dark (though the photo shows that are dimly lit). You could see only the halo around Jupiter.
One great thing about this site is seeing. After the experience of the two previous times I have been monitoring the weather seeing of meteoblue and I could see that, on average, about twice the seeing is better than plain. It seems to me that the thing can be justified if one considers that the observing site is over the worst layers of the atmosphere (not in a basin as Casera Razzo). The fact is that last night the seeing was excellent.
We observed Jupiter. You could also use higher magnifications, but I wanted to observe 260X, to enjoy an image with a wild fineness of detail and engraving that I have rarely had at home. To understand, I could see the rise of the Red Spot. He saw "half" al'orizzonte! Not only that the stain had its color, SEB another well-defined color, and the area that separates the SEB from the spot (well resolved) yet another color. The NEB can be resolved in detail each of which had a shade of their own and different from others. Of course we have not been there for so guardareb Jupiter, because we went to do deep sky, but there is no doubt that this is also a site to make high resolution.
Since I'm on the subject of planets, I mention the observation of Uranus, which we have seen three satellites, and Neptune (a satellite). Before leaving we also saw a 6-Mars, "which showed the stage, caps and some detail on the surface (but it was choppy on board one of the Three Peaks).
To go to the Deep Sky objects: I left with a rather long list, with different exotic objects, but then the "negotiations" with Marco (who had his list) have led to a compromise.
An object that I want to mention now, although we have observed in mid-night, is NGC 6946. I did it on purpose to observe once again check the level of detail visible. I could see the spirals, and I could also imagine different nodes of stars along the spiral. Do not think I've ever seen so well. The core of what was to him: more light and fine. Finally, you could feel the faint glow of the entire galaxy. We watched a bit the 'at all magnifications but the best came out to 170x with the Pentax 10.5 and 260X with the 7 Nagler. The fact that the galaxy was in the darker part of the sky, and seing played in favor. In particular, the seeing allowed to use magnification while maintaining high image contrast. The stars (those sufficiently weak) were in focus in the center of the field by a dot and a flash. Too bad the board is also correct in Newton. I wanted a Paracorr! A
secono object on which the seeing was crucial was the planetary nebula NGC 6886. The nebula has a diameter of a few seconds of arc and is reported to be stellar in appearance, but at 260X, focusing on, the stars formed the head of a pin, while she remained increasingly blurred. A fire could feel the pinpoint stars and the nebula as a fuzzy ball.
Abell 43. A nebuolsa planeatria that we could see the 130x (better filter). To me it seemed to receive a reinforcement ring. IC1295
also observed, with the globular near 6712. I'm not sure that he saw the small planet in the midst of two (PN G25.3-4.6), which incidentally does not even see in this picture .
Look also at the global 6818, and the dark nebula Barnard 150 (near NGC6946), which saw the largest nodule at 86x, but I did not follow (we did not change quickly for the eye), the stringy part.
Unsuccessful attempt identify BSI 149, Sh2-136, BSI 152, but perhaps more for lack of organization and quickly (they were not in the list that Mark wanted to go beyond!).
NGC 7023, osservatra like a light with some wrinkling around the central star. Note also the two
Gaassie NGC 7332-7339, which is perhaps a bit 'weaker than in this photo .
Finally on my list have saved some Abell. The 45, 61, 71 and 72 ... but now I can not remember what they were visible and what not! The next time I write, I should also observe only 20 items instead of doing the marathon to observe 70.
List Of Marco, we did:
NGC 6384, which I have a percept elongation and "something" of spiraling. In fact it seemed to me a bar with a ring. NGC6572 (no comment). Barnard's Galaxy (vaguely visible at 86x, at 56x almost gone (unfortunately we have observed several items in the unfavorable sky.) NGC6907, 7184 (no comment). NGC 6886, which I mentioned above.
We observed in the Vulpecula open clusters and nebulae 6820, 6830 and 6823. was faintly discernible through the haze before the eye as he watched a UHC filter with the 32 mm eyepiece (56x). Also in the Vulpecula 6813.
Finally, NGC 6842 (no comment).
this observing session, more than others, but I convinced that you should limit the number of items in the list, and, above all, should observe good and slowly, just taking notes and maybe even doing the drawings. Otherwise it remains just a list of what we have seen but can not remember how you have seen.
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