third exit Val Visdende in less than a month. Dark slightly lower output record of 8/2/2011. The SQM has come to touch 21.80 Gegenshein but was more difficult to view. Even the star of 7.11 near M81 was more to the limit.
This time it was almost a starparty: there was me, Lorenzo Burti, Andrea Francescon, Mars4ever, Vesna, ToolMaynard. Dopbson 60 cm, 50 cm, 35 cm, 35 cm and 30 cm. The really negative note
of this output was seeing, that is to say bad still be generous. The star had the effect 160x "stellarium" (floppy sgumati). Later in the night, the situation has improved slightly (the zenith) and we also used a few more magnification, but have never seen the star point (even at only 100x). We had some
the global list, but because of seeing we dropped. I have not even been able to show very well the new Explore Scientific 100 ° 9 mm. In retrospect, I think with a kind of seeing is probably best not to leave (because the bad seeing was widely expected by meteoblue). Saturn, observed at the end of the evening was so amorphous that they could hardly see the curves between the rings and planet.
The temperature has dropped to about -12 ° C (according to SQM), -6 ° C according to the thermometer outside my car. The humidity was virtually absent: no external capacitor on anything. The thing was irrelevant with regard to my two ETHOS and humidity have it in and I've always kept under the action of the anti-fog strips (which almost was not enough, given the cold - in fact the bands can not warm up completely eye so big; serve two bands for the eyes).
The most important object in the night was undoubtedly NGC 4449, irregular galaxy in a CNV. We osservta at various magnifications and showed a good amount of detail and condensation. The figure at the beginning of this article tries to give an idea of \u200b\u200bwhat was visible. The image has suffered the seeing (with a seeing better would surely have been much more detailed). In Overall, however, several condensations were visible at magnifications between 160x and 380x (380x we went to the ES 9 mm). The vision was better overall with the Ethos Qualle 13 to 265x.
Other items were of some importance in my opinion, Arp 2 and the antenna (see below).
below lists the items that I have given (but there were others).
NGC 2420 (Open Cluster in Gemini), at 23:47:11. 21.66 SQM.
Eskimo Nebula - NGC 2392 (Planetary Nebula in Gemini), 23:59. Seeig horrible. Visible when structures in onion, but not the face of a clown.
Messier 109 (Spiral Galaxy in Ursa Major), 00:17 hours. You can see hints of the bar and spirals. Osservata a 160.
NGC 3953 (Spiral Galaxy in Ursa Major), ore 00:18.
NGC 4026 (Spiral Galaxy in Ursa Major), ore 00:37. SQM 21.76.
NGC 4088 (Spiral Galaxy in Ursa Major), ore 00:44.
NGC 4085 (Spiral Galaxy in Ursa Major), ore 00:45.
NGC 4157 (Spiral Galaxy in Ursa Major), ore 00:45.
NGC 4100 (Spiral Galaxy in Ursa Major), ore 00:45.
NGC 4485 (Irregular Galaxy in Canes Venatici), ore 01:14
Cocoon Galaxy - NGC 4490 (Spiral Galaxy in Canes Venatici) ore 01:14. Fa parte di Arp 2 insieme a NGC 4485. Osservata a 160x, evidenzia la forma a fagiolo con la coda distorta dalla compagna.
Messier 106 (Spiral Galaxy in Canes Venatici), ore 01:15.
NGC 4217 (Spiral Galaxy in Canes Venatici), ore 01:15.
NGC 4449 (Irregular Galaxy in Canes Venatici), ore 01:16. L'oggetto più spettacolare della serata. Galassia irregolare mostra diverse condensazioni di stelle e/o zone di emissione. Osservata al meglio a 265x, ma anche a 202x, 345x, 380x (un po' scura), e con il filtro UHC che evidenziava un po' meglio le zone a emisione. SQM 21.80.
NGC 4725 (Spiral Galaxy in Coma Berenices), ore 02:12. Si vede la forma a ""tie fighter"" con una barra centrale, il nucleo e due archi di spirale simmetrici rispetto alla barra. Osservata a 265x al meglio. La forma era visibile anche to 160x.
Spindle Galaxy - Messier 102 (Spiral Galaxy in Draco), at 03:15.
NGC 5907 (Spiral Galaxy in Draco), at 03:16. It is shaped like a thin August 21.70 SQM.
Antennae Galaxies - NGC 4039 (Spiral Galaxy in Corvus), at 03:26. Two nuclei are visible on the twisted one. Observed at 50 cm in the 125X and 100X, 160x, 265x and 380x in 60 cm. Make the most of the 160-265x. A bit 'like this photo but without the fine details in the body of the two galaxies.
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