After three months yesterday, we were unlucky with the Three Peaks. The weather forecast gave clear and so it would be if it were not been for a very high humidity. The mountains all had a hat of clouds. In a couple of occasions we were completely enveloped in fog. Dark was dark (21.6 to 21.7) but transparency has never been good.
The seeing was good. The temperature at 7 ° C. I were Mark, Andrea and Mirko. A two 30 cm and 60 cm for a total of 120 cm ;-).
Because of the thermal load from home (over 20 ° C) I could not make the most of seeing that the resolution would allow. But I can not complain: I still have pinpoint stars even at fairly high magnification (see below).
The good news is that the lighthouse Genzianella has been replaced with a much smaller place. It 's still oriented male ma ora almeno è molto molto meno luminoso. Alche il faro dell'istituto Pio XII all'ingresso di misurina è stato spento. Due successi merito della segnalazione dello scorso anno di Mars4ever.
La cattiva notizia è che c'erano già un bel po' di camper e scalatori. Abbiamo trovato un buon posto nel punto più estremo del parcheggio basso degli autobus. Temo però che nei prossimi mesi il problema affollamento e convivenza si farà sentire ("loro" illuminano e devono dormire, noi dobbiamo osservare e facciamo rumore).
Nelle poche ore di buio abbiamo fatto una carrellata di oggetti classici, ma nuovi per il 60 cm. Abbiamo anche fatto diversi confronti con i due 30 cm. Alcuni oggetti che mostrano dettagli nei 30 cm appaiono ovviamente "meglio" nel 60 cm ma , siccome si vedono comunque dei dettagli anche nel 30, la differenza viene "metabolizzata". E' per esempio il caso della Trifida, che appare divisa in tre già nel 30 cm. Nel 60 cm le tre divisioni sono più definite ma nel complesso si ha l'impressione di vedere lo stesso oggetto. Altri oggetti subiscono però una trasformazione radicale passando da amorfi in 30 cm a ricchi di dettagli nel 60 cm. Qua sembra di vedere un'altra cosa. E' per esempio il caso della Crescent, che nel 60 cm mostrava una ricca trama di dettagli(con filtro O3) mentre era una cosa abbastanza amorfa in 30 cm.
Con il 60 cm abbiamo osservato all'inizio alcune galassie "secondarie" come per esempio il gruppo 5746/40/38/25. The 5746 shows how a galaxy of cutting and the bulge (with difficulty) the dark band. Another group was the 5317/63/60/56/48/38/73. In general, all showed a bit 'of structure. We then made a
Carello of globular clusters. While the globular assume an identity in apertures from 30 cm to 60 cm just become different from each other. One can distinguish between alignments of stars that make them unique. For example, M4 has a few bright stars that make it look like a face. We also noticed a couple of stars that seemed to appear quite bright color (red). M14 instead has very faint stars and fine. M56 was very well resolved.
We also observed nebulae planetary. The Owl at a time not so favorable ethos seemed very large 21, but his eyes were soon thwarted. The blinking to show a 333x and then to 420x. In a 60 cm does not "blink" as the central star is visible surrounded by a much brighter. We observed late at night when the mirror was quite acclimated (but not yet perfect). For this to 420x the stars were still point, and I could even see the vibration of the fan (which can be seen from about 400x in the form of stars as dashes - of course I have a second smaller fan that vibrates less).
I also observed M57 at magnifications between 230x and 333x. The stars were visible up to 15.7 live (And far point). The 16.1 and 16.6 were visible. I think the limit is higher in more favorable nights. The central star is lost I see it as star (not as light reinforcement in the center ring of smoke). Mirko says it was obvious to me not quite so obvious. Mark agreed with me (but not visible light) while Andrea had any doubt that it was real.
IC1296 was also visible as a small faint glow.
Among the nebulae, the Crescent I said. should also be mentioned in the cocoon, which was huge in the 21 mm (142x). You could better capture in its entirety with the extreme Scopos to 85x Hbeta filter. We should also mention the nebulae of the Galactic Center: The Lagoon is closed Scopos with O3 in a cocoon. M16, M17, the pillars of creation (not easy). the Trifid.
M108 also mention, that you could make out the bright nucleus and two areas on opposite sides.
The rise of the Moon has put an end to this output on the whole not very lucky. SQM LO has started to decline: 21:47, 21.30 ... We observed up to 21.1.
The full list of Mark. 5746/40/38/25, 5317/63/60/56/48/38/73, M5, 63,57,56,97,108,4,80,8,20,17,16,29,12,10, 14, NGC 6888.6826, IC1296, 5146.
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