First and foremost observing love: naked eye.
Last but not least, telescopes.
And I sometimes dabble with cameras.
Quote:My notes, using my 7-inch Dob in Boston's outer suburbs, say:Tricky. Cluster consists of a bright double [HD23675]with a much fainter companion, plus a bunch of stars about 3' square all much fainter than the faint companion, most barely visible with averted vision at 105X. Even with those, still pretty poor.
Quote:This for me was the most difficult, and in fact the only difficult object when I was doing Herschel 400 with my 4" f/5.5 Televue from a blue zone site. I had to return to it on a number of nights over some months. First I saw nothing but the lucida. Then I saw it as a double star (the lucida and the faint companion) and was told that this is how Herschel 400 hunters usually see it when they count it. It looked the same then in a fellow observer's 17". I did not give up however and with the improving conditions later that year suddenly I did not just see it as a cluster (with the lucida and its companion off-center) but it was beautifully resolved in my 4" with half a dozen individual members identifiable on a misty background with the DSS at 70x.
Quote:This one is seen through a patch of significant intervening dusty gas, reddening it to a color excess of E(B-V) = 1.6, which would make a bluish B-type star as yellow-orange as a K-type star. This is a visual extinction of nearly 5 magnitudes, making the cluster only about 1/100 as bright as it 'should' be. The bright double star is, I think, not related, likely lying in the foreground. Its inclusion very much artificially increases the catalogued cluster brightness, which really should be closer to 9-10 magnitude.
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Quote:Starhopped pretty accurately to this guy tonight but could find no trace of a cluster. I know it's a small one (4 arcmins) but fairly bright at 6.59 magnitude. The closest star(HIP 17877) appeared as a double even though it didn't show up as one on my chart. The secondary of double appeared dimmer than the magnitude of the cluster and though seeing was very poor, I'm almost positive it was a star and not the cluster. But maybe it was? Or at least part of the cluster?
I'm very confident in my star hopping to this object as I did it twice, coming from different sides being very meticulous and arrived at the same "double" star...but with no cluster visible. Not sure what to make of my observation here. Did I just keep going to the wrong star? Or was the "double" star that I observed this cluster?
As far as conditions go, I rated seeing at 2/5(anything above 100x was pointless) and transparency at 4/5. I observed this location at 77x 100x and 167x and made out nothing more than what appeared to be a double star.
Any ideas? I'm leaning towards being in the wrong location for the cluster despite being very confident of where I had the scope pointed, but I'm just not sure....
Present gear: 16-inch f/4.5 Dobsonian 50mm straight through-finder Green laser pointer 26mm, 32mm, and 38mm 70 degree field EPs 4.7mm, 14mm and 18mm 82 degree field EPs 8mm, 17mm, 21mm 68 degree field EPs 2X 2" Barlow Tirion star atlas (white stars, black background) hand-laminated Megastar Editor & co-founder Las Vegas Astronomical Society Observer's Challenge To nudge or not to nudge, that is the question www.fredrayworth.com
I want to do more then just look.
Quote:Numerous images show what looks like a blue planetary nebula centered within NGC 1444 can anyone ID this object?
Quote:Quote:Numerous images show what looks like a blue planetary nebula centered within NGC 1444 can anyone ID this object? Unless a new planetary nebula has just formed, it probably is just a 6.8 magnitude star HD 23675 which is overexposed in numerous images.
Quote:Quote:Quote:Numerous images show what looks like a blue planetary nebula centered within NGC 1444 can anyone ID this object? Unless a new planetary nebula has just formed, it probably is just a 6.8 magnitude star HD 23675 which is overexposed in numerous images. Not sure I agree, my question is based on an image in the February 2014 issue of S&T page 58. I could be wrong but it looks like a PN to me. Rich (RLTYS)