Last week (Aug 5-7), I joined Dennis Beckley, Ken Archuleta and Rick Linden for 3 nights at Likely Place Golf/RV resort (likelyplace.com). Likely is in the northeastern corner of the state, 17 miles south of Alturas on the Modoc Plateau at 4600 ft (about an hour east of the GSSP site). Dennis had made arrangements to stay at their 3-bedroom "Villa", with a fully equipped kitchen, comfortable living room, 1 1/2 baths and a covered deck looking out towards the Warner Mountains (highest peak nearly 10,000 ft). I knew about this location as it is the site of an annual star party hosted by StellarVue (http://stellarvue.com/Stellartrips/dssp2011/dssp2011.html ) and Tony Hallas had described had enthusiastically praised the site in an Astronomy magazine article (can be downloaded at likelyplace.com/attractions/#stargazing). Tony was also there imaging on Monday night and talked to us quite a bit about the site and local attractions. On Wednesday afternoon, we drove up into the nearby hills and hiked around the South Warner Wildnerness area visiting Mill Creek Falls (http://tinyurl.com/kjfwpl4) and nearby Clear Lake. Another short drive to us to beautiful Blue Lake (http://tinyurl.com/mplw3xy). Besides stargazing, if you're into hiking, fishing and golf, this spot has it all. Of the 3 nights we were there, Monday was the best as a weather system from the south moved in on Tuesday and we were completely clouded out (we did sit outside and admire the distant lightening). Wednesday also looked bleak, but the predictions were for the clouds to clear out in the evening and this time the forecast was right on schedule. We had another clear night (though with somewhat decreased transparency), with clouds not rolling in again until after 3:00AM. SQM readings were in the 21.55-21.7 range for me, though Rick had one in the high 21.7s. This is better than I've generally seen at the GSSP site (Adin). Seeing, though, started off poor and was somewhat soft all night, at least at the 375x I was using on galaxies, so although the skies were excellent (just inside a black light pollution region), some details were probably lost in the variable seeing. As a treat, two "bright" supernovae were on display - a mag 13 type Ia supernova (SN 2013dy) in |
Gyulbudaghian's Nebula After hearing that Gyulbudaghian's Nebula (GM 1-29) had brightened and was now visible again after several years of disappearance (since roughly 2006), it was high on my observing list for Likely Golf/RV Resort. It was immediately picked up at 200x as a faint, elongated glow, fanning somewhat (though not as much as I remember from '03) and extending NNE for ~25". There was slight brightening at the SSW tip, which contains the obscured Herbig Ae pre-main sequence star PV Cep, but as opposed to the earlier observation, PV Cep was not visible. A box or parallelogram asterism consisting of 4 mag 10-13 star is directly east, including a mag 10.5 star 2.4' ESE. This is an unusual H-H object, consisting of a variable reflection nebula or jet extending from the young, pre-main-sequence star PV Cephei. The nascent star is surrounded by a rotating circumstellar disk of material. At right angles to this disk are two jets of material, streaming away from the star at high speeds. One of these jets is visible (the other is obscured) on the north side as a stream of material intersects the surrounding gas in the interstellar medium. A 2012 paper provides evidence in support of a direct correlation between changes in the light output of the star and the brightness of the nebula. |
Gyulbudaghian [G98] 171 |
|
|
|
|
|
|
|
Cygnus A 19 59 29.3 +40 44 03 0.5'x0.4' Cygnus A is a powerful radio source roughly 750 million light-years distant and containing a quasar in the core. This is the first discovered and closest powerful radio galaxy (brightest extragalactic radio-emitting source in sky). It contains two powerful radio lobes separated by some 400,000 light years. Wolfgang Steinicke has a nice write-up at http://www.klima-luft.de/steinicke/Artikel/cyga/cyga_e.htm and Bill Keel has information at http://www.astr.ua.edu/keel/agn/cygnusa.html. I've looked for this hidden giant previously with my 18" and was unsuccessful. This time with my 24", it was picked up at 375x as an extremely faint and small glow, round, ~8" diameter (viewed nucleus only). Visible over 50% of the time with concentration but too faint to hold steadily. This challenging radio galaxy is squeezed between a mag 12.5-13 star just 30" W and a mag 14.3 star 20" E within a rich Milky Way field. |