Linosa I'm like every year, the island is not, as too often happens that makes you weigh its difficult accessibility. For once I arrive with a Sea oil has run broke the hydrofoil, and so I have to stay in Lampedusa. Arrive Sunday and then 11. A full day of sea, dinner with friends found in the evening to assemble the paintings, that being ultra-portable takes his time:
conclusion, it is observed ... ends which are operating on 12: it is just past the moon 6 days remain new and useful for my observing program (focusing on the Scorpion and a bit 'of its surroundings) before the moon ci metta lo zampino. Un’altra sera la perdo per motivi sociali. In definitiva solo 5 sono le serate osservative quest’anno. Ma mi accontento: anche se lo strumento è un modesto 6”, il cielo è sempre di sogno, SQM di regola 21.70 e riesco a concludere il mio programma, anche con qualche divagazione. Osservo dunque con il 6” f8, utilizzando prevalentemente oculari Plossl Televue da 20mm (60x) e da 11mm (110x); raramente ho utilizzato un filtro UHC, prevalentemente per individuare qualche planetaria stellare.
Inizio con la falsa cometa, una zona molto suggestiva che parte dalla doppia Zeta Sco e si estende a ventaglio verso N, con ammassi aperti che simulano a bassi ingrandimenti una cometa: una chicca al binocolo. L’immagine che segue è tratta da:
http://www.stevesastro.net/deepsky/falsecomet.htm
Si tratta sostanzialmente di NGC 6231, compatto e Trumpler 24, ampio e disseminato, che simula il ventaglio della coda. Più a N, ormai fuori la falsa cometa, altri due ammassi aperti, il 6242 e il 6268.
Zona della coda dello Scorpione:
accoglie due suggestive nebulose ad emissione: la Nebulosa Aragosta, all’interno della quale in visuale è ben evidente, perché luminosa, NGC 6357, dalla forma irregolare, accanto al piccolo e compatto ammasso aperto Pismis 24. La ricerca è facilitata da un evidente asterismo a forma di mazza da golf, e la nebulosa è bellissima and complex in the photo of Jennings
http://cosmicphotos.com/gallery/image.php?fld_image_id=155&fld_album_id=11
The rectangle encloses the two items mentioned in the DSS image is enlarged and later:
The next item is the Cat's Paw nebula (Cat's Paw nebula)
http://www.sciencedaily.com/releases/2010/01/100120093529.htm
in view of which is seen quite easily on the third finger, NGC 6334. The star-hop from the previous field is not difficult, given the proximity.
The next step, a butterfly planetary phantasmagoric image Hubble, the size of 1 'x 30 ":
http://hubblesite.org/newscenter/archive/releases/2009/25/image/b/
This is NGC 6302. Start the hop star Upsilon Sco, for 1 and ½ to a star or a triangle of 6 ^ (HR 6456) and 2 ^ 8 ½ (SAO208732 and SAO208758) identify the half-way. Eyepiece feel satisfied with an elongated shape and do not insist either magnification or with filters. The same triangle of stars is valuable to identify the next object, another planet, NGC 6337, round, actually ring, diameter 30 ". This is also very beautiful in the photographs, a ring with more stars in a row inside a miniature of M 57:
http://www.capella-observatory.com/ImageHTMLs/PNs/NGC6337.htm
In view of the object requires high magnification to capture the ' annular (the picture below gives an idea): in this case I behave in a defeatist and I'm happy to record it as a 'view'.
I consider myself happy because in the field of about 1, which gives me the 20mm is seen as the next picture: a good challenge. Increasing the magnification in the brightness is lost and things do not improve.
The attentive reader will already have been documented for a while 'I noticed that after walking the suggestions of readers deep- Latest Sky magazine a note regarding the choice of objects. Well, I did not have much time to document and then I went on the safe side, based on the choices of the magazine columnist.
Continuing along the same lines within the Wolf for NGC 6026, a lovely planet with a diameter of 40 "next to the star SAO207243. I did not take notes of observation, unfortunately, only 'view', satisfied because in the article was described as challenging in an 8 "... The star-hop is easily the double Xi Wolves.
Since it is near, I am tracing the globular cluster NGC 5986, an object very easy and nice, I had already observed in 2007. http://www.trekportal.it/coelestis/showthread.php?t=14203&highlight=linosa
Returning Scorpion sting of the hook, but this time on the outside and escape in the Corona Australis, here a nice bright and compact globular, NGC 6541, whose photographs show a halo of stars more rare, and the nearby, much weaker and diffuse NGC 6496, somewhat more challenging, on the boundary Sco / CrA. Incidentally, the story that I also searched the 6256, that the hook inside the SCO, that triangle with Epsilon and Mu. None. It makes me DSS reason: it is a globular very weak and scattered. 
Ophiuchus: a planetary to the vicinity of the star is called 12 ^ 'exclamation point', the DSS provides an interesting shape to S, which does not appear in amateur photos, in view is little more than stellar (diam . 15 ") but of adequate magnitude and surface brightness, NGC 6309. 
Finally, in the Snake, another exotic planet: Shane 1 (PNG013.3 +32.7) poco più che stellare ma chiaramente inserita in un evidentissimo asterismo posto tra Lambda e Delta Ophiuchi. In prossimità c’è una vecchia conoscenza, la galassia NGC 6118: anche quest’anno, come al solito, la vedo e non la vedo…. 
Finito il programma (il dovere) inizia il piacere. Vado a zonzo con il tele, per esempio a rifare tutti i globulari visibili del clan M19-M62; il globulare 6144 vicino ad Antares; e poi gli ammassi del Sagittario, specie quelli sopra il beccuccio del bricco, le vecchie conoscenze come l’aperto 6520 che si struscia con la macchia nera di B 86 e poco lontano il globulare debole 6540 che a lungo mi ha fatto penare: ma ora so dove e come trovarlo. Eppoi i Messier the district, in bulk. And when I'm tired, I lift my eyes to heaven just to bearmi the center of the Milky Way Galaxy. One evening a particularly clear for the right maestralino Pipa is clearly visible and more closely the rest of Horsham. On 21 morning I wake up at 4:20: Mark 21:55 and watch the SQM M74, M33, 31, 32, 110, M76, and then begins to dawn when I felt the 20:70 mark SQM day and think that these are the values \u200b\u200bthat usually seen from behind Lessini Verona!
In the following days when the moon rises, I stop the comments, but it saddens me that much. The moon on the sea offers a fascinating and unforgettable images: the E backdrop for the romantic dinner on the veranda:
Shortly after sunset Venus shines at its best: at one point two stars that were unknown to me come close and come into conjunction: the program tells me to be none other than Saturn and Mars! We see that not consulting the IAU (but the sky).
And finally, a gem that I posted in 'high resolution':
ANTARES. A late night try the companion of Antares. Taking advantage of Linosa is 36 ° N. Lat then 10 ° south of my usual observing site, Verona. Years ago there were failed with the 10 " 300x. Known observation that is perfectly compared to the previous antares therefore conclude that PA is 270 ° and made it clear from the catalog of double stars of Washington. The secondary I know blue, green anything, but as is the tradition just for the color contrast with Antares, as rightly noted. It seems just a bit outside the ring diffraction 'disturbed by seeing an imperfect. I note with a 3-6 Nagler 3mm (400x) for me is certain and confirmed (I've seen exactly as in the picture, but only faintly blue). I'm glad the company of other observations to confirm. In any case, consider an enterprise to be entered between each of those memorable amateur, especially if not an expert doppista. Lorenzo
0 comments:
Post a Comment