The weather recently has been clear, but murky, and last night was no exception. I went to our local society's observatory last night (every Thursday is the open evening and we usually get a mix of members and sometimes interested members of the public) and we took out some scopes, including a 10" Orion Intelliscope.
Unfortunately the mist and murk were worse than the previous night and we only were able to look at the brightest Messiers. Galaxies, as expected, were worst hit and even normally good Messier galaxies were almost obliterated. We did look at M105, NGC 3384, M65 and M66 (NGC 3628, one of the Leo Triplet with M65 and 66, was utterly wiped out by the murk), M81, M82, open clusters M93 and M46 (not a bad view despite their low altitude in Puppis and the misty conditions), perennial faves M42 and M43, plus the attractive blue and yellow double star Iota Cancri and, later when it rose, Saturn, whose rings have opened up since I last saw it.
I have never used an Intelliscope before. The concept is similar to the Argo Navis system, a digital setting circle. You enter your wanted Messier or NGC number, the display shows some numbers, which are how far you need to push the scope in altitude and azimuth to get to where you are going, along with arrows showing which direction you need to push the scope. The numbers get lower the nearer you are and when you arrive at the location the display will read 0<>0 0<>0. The society's Intelliscope was a little off, with the objects being just out of the field of view, but not by much. It's a neat system and I'd like a similar thing for my scope, maybe an Argo Navis, one day.
Despite the crap conditions it was a nice evening and we also spent the time putting the world to rights as well as observing. It was disappointing though, that only a handful of us were outside, with most people choosing to sit inside the building and chat. It's an astronomy society, so it would be nice if everyone was outside but that seems to be the difference betwen UK and US amateurs. Over there, it seems to be a more vibrant and active scene.
Clocks go forward on Sunday morning. Yuck.
Showing posts with label Double Stars. Show all posts
Showing posts with label Double Stars. Show all posts
Friday, 25 March 2011
Thursday, 13 August 2009
Double vision
On Tuesday (11th August) we FINALLY got a clear night. Well, clearish, as the haze was bad but it was certainly better than the near 100% cloud cover we've been getting recently.
Because of the murk and the rising waning gibbous Moon, I decided to stick with a few doubles in Bootes, plus some 'lollipop' bright objects elsewhere in the sky. It was also a short session as it was gone 11pm and I had to be up for work the next morning.
My observing notes read as follows:
A rare clear night this summer - July and August have been frankly bloody awful with only a couple of clear nights for observing, including tonight.
The transparency tonight is not good and I am only using a small refractor (my 12" is out of action, and likely to remain so for a while or until I get a new one), so concentrating mostly on double stars. After having been out here a while, the sky conditions are not good. It's milky and there's very little contrast in the Milky Way with some high thin cloud and the waning gibbous Moon interfereing.
Alcor and Mizar in Ursa Major:
One of my favourite doubles, this well-known system is a lovely white pair, visible to the unaided eye but superb through the small refractor at 37.5x
Albireo (B Cygni):
My favourite double, the bright gold star and it's slightly fainter, bright blue companion are stunning.
Delta Bootis:
Faintish gold star with faint blue companion. Wide double. Nice.
Unfortunately only a short session, due to having to go to work tomorrow. I'll be glad when the long nights are here and BST is back to as it should be, GMT.
Have decided to go for a 12" Lightbridge or Revelation. I had decided on the LB, but my work contract finishes two weeks earlier than planned, so I might go for the cheaper Revelation instead. However, I was pretty annoyed to hear that the Revelation has now gone up from £549 to £660 in the past week. Bugger!
Because of the murk and the rising waning gibbous Moon, I decided to stick with a few doubles in Bootes, plus some 'lollipop' bright objects elsewhere in the sky. It was also a short session as it was gone 11pm and I had to be up for work the next morning.
My observing notes read as follows:
A rare clear night this summer - July and August have been frankly bloody awful with only a couple of clear nights for observing, including tonight.
The transparency tonight is not good and I am only using a small refractor (my 12" is out of action, and likely to remain so for a while or until I get a new one), so concentrating mostly on double stars. After having been out here a while, the sky conditions are not good. It's milky and there's very little contrast in the Milky Way with some high thin cloud and the waning gibbous Moon interfereing.
Alcor and Mizar in Ursa Major:
One of my favourite doubles, this well-known system is a lovely white pair, visible to the unaided eye but superb through the small refractor at 37.5x
Albireo (B Cygni):
My favourite double, the bright gold star and it's slightly fainter, bright blue companion are stunning.
Delta Bootis:
Faintish gold star with faint blue companion. Wide double. Nice.
Unfortunately only a short session, due to having to go to work tomorrow. I'll be glad when the long nights are here and BST is back to as it should be, GMT.
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Have decided to go for a 12" Lightbridge or Revelation. I had decided on the LB, but my work contract finishes two weeks earlier than planned, so I might go for the cheaper Revelation instead. However, I was pretty annoyed to hear that the Revelation has now gone up from £549 to £660 in the past week. Bugger!
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