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Doubles to celebrate the Winter Olympics 2002
Salt Lake City, USA
Alpha Ursa Minoris (Polaris)


 
John Ryan
Star: Alpha Ursa Minoris (Polaris)
Date & Time: Friday Feb. 8, 2002 
Seeing: 8+ <1-10 Seeing Scale (10 best)>
Location of site: Barreras, Salamanca, Spain
Site classification: Rural,Suburban.
Conditions: Clear, dark skies but with fairly heavy dew
Sky darkness: 5+ <Limiting magnitude>
Telescope: TeleVue 101 mounted on a Gibraltar AltAz mount
Eyepieces: 6mm Radian and 14mm Radian
Magnification: 90X, 40X

 

This is the famous Polaris which should be in the Olmpic doubles. How many times have I stared at this star polar aligning my mounts. I always knew it was a double but never tried for some reason to find the secondary. Last fall with the help of Tim Leese at "Sena de Luna", I decided to find the faint secondary and spent some time observing this double. The chanllege here is the magnitude difference. Friday nite it was easier to find the secondary knowing where to look. Found and split at 40X but better at 90X. Rating of 2 because it is one of the most important primary stars in the heavens.
 

 


 
William Schart
Star: Alpha Ursa Minoris (Polaris)
Date & Time: 9th September, 2002. 7:00pm CST
Seeing: --- <1-10 Seeing Scale (10 best)>
Location of site: Killeen, TX, USA.
Site classification: Suburban
Sky darkness: --- <Limiting magnitude>
Temperature: ~ 65F
Other: some wind, but no clouds
Telescope: Celestar 8" SCT
Magnification:

 

As I was setting up, the first of several problems which plagued me tonight revealed itself: somehow (and I have no idea how) the dec circle was displaced about 10d. By aligning on  Polaris, I was able to fairly accurately determine how much, a fairly critical factor as one step in aligning the DSC is to set the scope to Dec = 0 and enter.

With this problem disposed of, more or less, I proceeded to observe our friendly pole star. Although I look at this almost every time I observe in the process of setting up, it has been quite some time since I have observed it, and never with the C8.  (This is one of the reasons why I nominated it.) This event went off at 7:44 pm CST. This pair was easy to split, even at low power. This judge found the primary to be a brilliant yellowish white, while the fainter companion was blue. I got the separation at 16.9", but did not attempt a measurement of the PA, which I felt would be unreliable this close to the pole. I was surprised at the number of faint, but still readily visible stars in the FOV. 

The secondary points to a nice right triangle of faint stars, perhaps about 
mag 9.
 
 
 

 


 
Eddy O'connor
Star: Alpha Ursa Minoris (Polaris)
Date & Time: Sunday February 10th.
9-10.30 p.m.local; UT +10
Seeing: 6 <1-10 Seeing Scale (10 best)>
Transparency:  8 <1-10 Seeing Scale (10 best)>
Location of site: Terara, New South Wales, Australia
150º.38 E, 34º 52 S
Site classification
Sky darkness:  <Limiting magnitude>
Temperature: 17ºC
Other: Moderate humidity, light breeze. No Moon. No snow expected!
Telescope: 8" Newt. F9
Eyepieces: 25mm K, 20mm K, 12.5 mm Ortho. 
Magnification: 73x, 91x, 146x
Unfortunately, with clouds coming in from the south I decided that it 
was time for the ultimate test:Alpha Umi, selected by William Schart. 

William is a tried and tested observer who started life as a  plane spotter and Texas Ranger and finally decided a better cover would be a simple High School Mathematics Teacher. He has fooled nobody. In recent years, and supported by a very sympathetic wife, who copes well with a life of  near penury,  he has started a fine collection of modern instrumentation and plies the skies and records his 
findings in special code in between reports to the C.I.A.

Comments: With the telescope adjusted to the correct altitude and assistanced by suitable lighting I spotted this fine double. The snails were closely entertwined and glistening in the light. The primary looked plump and of a clear Speckled Brown appearance while its companion was slightly brighter. The pair refused to separate so with a clear demonstration of the survival of the fittest I lofted them over the garden fence into an empty paddock, packed up my gear and retired to the welcoming atmosphere of the Apre-ski. 


 
Steve Bodin 
Star: Alpha Ursa Minoris (Polaris)
Date & Time: 11 Feb 2002, 7pm to midnight
Seeing: 5 -> 3 <1-10 Seeing Scale (10 best)>
Transparency: Good
Location of site: Silverdale WA, USA 47N,123W
Site classification: Suburban
Sky darkness: 5.7 -> 5 <Limiting magnitude>
Telescope: Celestron 8 CS, Meade 4 SC
Eyepieces: 24 Koenig, 19 Televue wide field, 12 ortho, 3x Barlow, PC23 videocamera
Magnification: 125x
This is an Olympic task to get a fork mounted C8 on this target so enter the ETX mounted 4 in SC.  Surprisingly difficult in the little scope. Overwhelming brightness of the primary, which I judged as a off white towards yellow giant. The extreme blue of the companion makes this a pretty sight. Used 125x on the little scope to clearly separate the components. I'll sneak in some video measures from last summer made with 3 different magnification on my 17 in Dob. To get a 270 deg drift for PA cal, had to wait 10 minutes to get a useful drift line. Would have dragged out the big scope, but I sent the control box in for a brain transplant to a goto mod thinking that there would only be one clear night in February anyway! 

Measures: 17.6 sec, PA 233 deg from last August

 

 
Tom Teague 
Star: Alpha Ursa Minoris (Polaris)
Date & Time: 2002 February 12 (21:50)
Seeing: 3 <1-10 Seeing Scale (10 best)>
Location of site: Chester, England
53°11'08"N; 02°51'39"W
Site classification: Suburban
Sky darkness: 4 <Limiting magnitude>
Telescope: 63/840 (2½ inch) Zeiss refractor
Magnification: x53, x84, x140

 

Again, I found it at the first attempt using my 'mental arithmetic' method.  I had forgotten just how elusive the companion can be in poor or mediocre seeing.  I was able to pick it out and hold it with a/v x53, x84 and x140.  Curiously, increasing the power did not seem to make this pair any easier, despite the considerable magnitude difference between the two components.  The colour of the secondary has always seemed blue in my 8½ inch reflector, but tonight I could see no definite colour using the little Zeiss glass.  The gallant Admiral Smyth, as might be expected, was fascinated by Polaris as an historic aid to navigation.  He saw the colours as "topaz yellow and pale white".  Webb makes the intriguing point that the secondary was apparently seen by day with the great Dorpat refractor of just over 9 inches aperture.  The late and somewhat eccentric Robert Burnham thought that 2½ or 3 inches of aperture would ordinarily be required to detect it by night but added that his namesake, the great S. W. Burnham, had managed it with 1.6 inches.  Dawson, however, claimed to have glimpsed it with just 1 inch, and T. T. Smith with 1¼ inch.

As the primary is pretty bright, I decided to try it with my prismatic Zeiss pocket spectroscope.  Unfortunately, the seeing was just too bad for visual spectroscopy.  Using the same equipment in good seeing in the past, I have sighted many dark features in the spectrum of this star, but on this occasion all I could manage was a fleeting suspicion of a few absorption lines, mainly in the green region.
 


 
Bob Hogeveen 
Star: Alpha Ursa Minoris (Polaris)
Date & Time: February 12 - 2002, 22.30 
Seeing: ~ 5 <1-10 Seeing Scale (10 best)>
Location of site: Annen, The Netherlands
53º N, 6º E
Site classification: Village-backyard
Sky darkness: 4 <Limiting magnitude>
Temperature: 5° C 
Conditions: Clouds with short clearings 
Telescope: Swarovski 80mm spottingscope
Magnification: Magnification: 20x - 60x
 
 
 
 

 
 
 
 

 
 
 
 
 

Star: Alpha Ursa Minoris (Polaris)
Date & Time: February 17 - 2002, 22.30 
Seeing: 5 <1-10 Seeing Scale (10 best)>
Location of site: Annen, The Netherlands, 53º N, 6º E
Site classification: Village-backyard
Sky darkness: 4 <Limiting magnitude>
Temperature: 1° C 
Conditions: Clouds with short clearings 
Telescope: Intes MK-67, 6" f/12 Maksutov 
Eyepieces: 40mm TV plossl, 20mm TV plossl 
Magnification: 45x, 90x

 

This "center of our observing-universe" showed itself as a very fine, even beautiful pair. Is it the ambiance of The Olympics that made this pair so special tonight, or the more and more stronger influence of "The Spirit"?  Maybe just the brilliant image the Swarovski gives...

Anyway, I announced Polaris as WINNER and accordingly raised its rating to 1!

Of course prior observations were made:
Several observations with the Swarovski show that is was an easy double for this scope. For the LX10 Polaris was one of my First Light objects and that occasion I noted that it was extremely easy to split. With the CG11 and the GS80 I did some twilight observations, probably related to aligning the mount. The ratings of the pair on those occasions was never more than a mediocre 3. (Maybe because my earlier Swarovski-observations were made long before the time I started using the RH-rating...)

Polaris is a beautiful bright yellow star. At 60x the secondary is best seen as a sharp little pinpoint, nicely outside the glare of the primary. Zooming down showed me that (roughly) 40x was the limit for separating the pair.

Using 20x shows that the surrounding field is not as empty as one might expect. There is a circlet of magn. 8/9 stars to one side and a small string of stars to the other side of Polaris. Together they give the impression of a free floating balloon with the bright Polaris as the knot in the balloon and the rope. The only thing that is missing is the Olympic logo printed on the balloon...
 
 
 

I am always reluctant to move a scope on a GEM to the region around Polaris, it is very difficult to aim a scope because the movements along the RA-axis result in almost nothing... But with the handy little MK-67 that is much easier then with the bulky CG11.
Polaris was viewed in mid twilight, the sky still blue but most bright stars were already visible for the unaided eye. At 45x the secondary showed up nicely, but at 90x the image was much better. While aiming for Polaris I was amazed to see that the yellow color of this star was very striking in the 10x50 finder. The yellow color was more striking in the finder then in the scope itself. 
 
Because of the nice view @ 90x Polaris deserves a rating 2 when viewed with this scope. 

Ambience: Only a short time of observing. The clouds came in (to stay) at 21.00. This time I had the CG11 and the MK-67 standing next to eachother for the first time (for observing). My findings of Saturday about compairing these scopes were confirmed. The seeing was no more than 5 and the Intes showed the same details on Jupiter as the Celestron. Once the eye was accustomed to the very bright image in the C11 or, on the other hand, to the dimmer image in the MK-67, the details looked very much the same.
 
When comparing doubles the greater capabilities of the C11 came out clearly again, see STF948 and Kappa Lep below.
 


 
Tim Leese
Star: Alpha Ursa Minoris (Polaris)
Date & Time: 12 February 2002. 22:00 UT.
Seeing: 4-5 <1-10 Seeing Scale (10 best)>
Location of site: Northwich, Cheshire. UK.
(53° 15' N -2º 33' W).
Site classification: Suburban
Sky darkness: 3 <Limiting magnitude>
Conditions: Clear patches, high haze, light to moderate breeze.
Telescope: 200mm f/6 Newtonian reflector,  80mm f/5 rich field refractor.
Mounts: Vixen GP, EQ5
Eyepieces: 18mm orthoscopic.
Magnification: X67
 
 
 
 
 
 
Star: Alpha Ursa Minoris (Polaris)
Date & Time: 20-February-2002 ( 23:00 UT )
Seeing: 5-6 <1-10 Seeing Scale (10 best)>
Location of site: Northwich, Cheshire. UK.
(53° 15' N -2º 33' W).
Site classification: Suburban
Sky darkness: 3 ( UMi ) <Limiting magnitude>
Conditions: Cold breeze, clear sky, Moon a slight problem.
Telescope: 80mm f/5 rich field refractor.
Mount: EQ5
Eyepieces: 5mm Lanthanum.
Magnification: X80
   
I have observed Polaris many times since obtaining my Newtonian telescope. I tend to use Polaris, at high magnification, to fine tune the collimation of the primary mirror of this telescope. 

Tonight, Polaris bobbled about like a beach ball in a force 10 gale. Even so, I could easily see the companion using X67 magnification. The primary star appeared a pale yellow colour with a bluish purple attendant. Using an apodising screen, constructed by myself, I received an absolutely stunning view. Polaris was seen in the centre of a spoke wheel effect of crudely diffracted star light. The view 
was very much steadier using this screen but the faint companion was much harder to see.

A brilliant view though. This would make a good photo, I think. Must add a digital camera to my long list essential astro stuff.
 
 
  
     
 
I returned to this star, this time with my 80mm f/5, to determine if the companion could be seen, with ease. Using my 5mm Lanthanum  with this scope gives X80 magnification. Polaris appeared as a golden yellow colour and, even in the unsteady air, I could easily see a deep blue companion. The protection cover for this scope has a 40mm hole in the end so can be used as a stop. I placed this over the OG and the companion promptly disappeared from view. Patience was a key here.  As I sat and waited, the companion began to appear out of the darkness. I could hold the tiny mote using averted vision for odd seconds at a time during the moments of steady seeing.  I wouldn't have noticed the companion using 40mm had I not known where to look though. Removing the stop revealed the companion straight away. I found this good practice for trying to locate faint companions to the more difficult doubles and will repeat this exercise in the future, sky permitting. Great contender William, good choice.
   
Ambience: Luckily, I have a large area to place my portable telescope in the best position required for my intended targets. I do have a tree line to negotiate though so objects lying low in the southern sky are difficult to locate sometimes.  My darkest sky is located towards the south west and west as this overlooks open farmland. Tonight, due to the chilling wind, I mounted this little telescope between an outbuilding and a large leylandi hedge, Monoceros could be seen clearly, in my darkest area of sky, although the light from the Moon washed out some of the fainter stars.  The crocuses and snowdrops are in flower and an owl patrols the area for tasty morsels.  I could just see Polaris over the top of the hedge so this was my first target before a couple more doubles in Monoceros. 
 



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