Alpha UMi, Polaris
 
Richard Harshaw
Star: Alpha UMi, Polaris
Date & Time: 5/5/04
Seeing3 out of 5
Transparency: 3 out of 5
Location of site: Northern Kansas City, 
Missouri (USA), 
94º 30m W, 39º 15m N
980 ft above Mean Sea Level
Site classification: suburban
Sky darkness
: ---  <Limiting magnitude> 

Telescope: Celestron C-11
Eyepieces: see reports
Magnification: 98x
Rating Scale: 3E  <1 to 5 (1 being outstanding
view, to 5, a dismal view) and letter E, M or D (easy, moderate or difficult)>
98x.  Colors of white, blue, undetermined, adn white (?).  Rating of 3E.
The C and D stars are difficult, even in good skies.  In tonights mush, they
were very difficult indeed and seemed, at times, like the Cheshire Cat--
there, then not, then there again.

"I wish you wouldn't keep appearing and vanishing so suddenly; you make one
quite giddy!"
"All right," said the Cat; and this time it vanished quite slowly, beginning
with the end of the tail, and ending with the grin, which remained some time
after the rest of it had gone.
"Well! I've often seen a cat without a grin," thought Alice; "but a grin
without a cat! It's the most curious thing I ever saw in all my life!"

'Twas brillig, and the slithy toves
    Did gyre and gimble in the wabe;
All mimsy were the borogoves,
    And the mome raths outgrabe."

James Kaler's "Star Notes" web page has a nice writeup on this star.  Check
it out.

Polaris and the bright companion are at least 2,000 AU apart

 

 

Tom Campbell
Star: Alpha UMi, Polaris
Date & Time: May 5, 2004
10:00pm - 11:30pm CDT (03:00-04:30 UT)
Seeing: Stable (8/10)
Transparency: Clear (8/10)
Location of site: Iola, Kansas
(Long: 95°24'W Lat: 37°55'N)

Site classification: Suburban
Weather: Temperatures in the low 60s. There was a light breeze. Relative
humidity was about 68%

Sky darkness: ---  <Limiting magnitude> 
Telescope: Discovery DHQ 8" dobsonian
Eyepieces: 1.25" Plössls - 25mm, 15mm, 10mm, 6mm
Magnification: 49x, 81x, 122x, 203x

I always like looking at this double. Although I could easily find the faint companion at 49x, the best view was at 81x. At this magnification, the primary is yellow-shite and the companion is pale blue. It reminded me of what the Earth and Sun might look like from perhaps a moon of Saturn.

 

  

 Steve Bodin
Star: Alpha UMi, Polaris
Date & Time: 13 May 2004, 11 pm to 2 am local
Seeing: 3-4 <1-10 Seeing Scale (10 best)>. 
Transparency: good
Location of site: Silverdale WA, USA
47N 123W
Site classification: suburb-rural
Conditions: temp 45F, dry
Sky darkness: 5.6 <Limiting magnitude> 
Telescope: 17.5 inch Dob, Bigdog
Eyepieces: not used
Additional: DX-8263SL color video camera at prime focus
Magnification: app. 350x
Have viewed and measured this guy a couple dozen times simply because this is my setup star for the Bigdog 17 to align the finders and focus everything etc. Well, I have never gotten the WDS measure for this one, but that was listed 30 years ago and precession has probably caused the PA to change due to Polaris passing so close to the pole. Measured 18.54 sec at 222 deg PA.
 
p
 
Processed my Polaris data from the 13 May observations to see if the very faint C and D listed companions could be located. Two stars were found, but the C star is a mystery. The WDS lists AC at 43 sec 88 deg PA in 1884 and then 0.1 sec 281deg PA in 1939. I located a star that seems to agree with the 1884 observation at 39.5 sec 089.5 deg PA. Maybe the 1939 data is faulty. The D star is somewhat displaced too, but the last observation was in 1890 at 82.8 at 170 deg PA, I measure 83.13 sec at 181.9 deg PA. I will try again, as this is my Bigdog alignment star and viewed quite often.
 
p

  

Luis Argüelles
Star: Alpha UMi, Polaris
Date & Time: 15 May 2004
Seeing: 7 <1-10 Seeing Scale (10 best)>
Transparency:  7 <1-10 Scale (10 best)>
Location of site: Sena de Luna, Spain
1,200 metres over sea level
Site classification: Rural
Conditions: Chilly
Sky darkness: 5 <Limiting magnitude> 
Telescope: Takahashi FS-102
Mount:  Giro-II, altazimutal
Eyepieces: 16 and 9mm Nagler
Magnification: 51x, 91x

This night is “first-light” for the Giro-II mount in Sena de Luna. Certainly, it’s a pleasure to set-up the telescope in less than 5 minutes. Without the list of doubles for the project nor maps of the sky, I only can find Polaris.

As usually, it’s an easy split at low magnifications and both Naglers offer splendid views, but seeing is seeing, and I remember the split was more clear using a Televue Ranger at 48x on a night with Seeing and Transparency = 10 than tonight with the Takahashi. It’s what I repeat night after night: the most important part of the optics in a telescope is the atmosphere!

This night was also the “Neat Comet” night. Loveley view in the Tak with a 35mm Eudiascopic at 23x and with the 16mm Nagler. The wonderful thing was the fact that the Neat comet was in the same field of view of M44, producing an unforgettable sight. Interestingly the best view was obtained with a pair of 8x40 Pentax binoculars that perfectly framed the event.
 

    

Mary Flanagan
Star: Alpha UMi, Polaris
Date & Time: May 18 2004
10:00-12:00 CDT

Seeing: 4/10
Transparency: 5/10
Location of site: Apple Valley MN, USA
93d 14m 25s W; 44d 45m 17s N
Site classification: Suburban
Sky darkness
:
3 <Limiting magnitude> 
Telescope: 12.5" f/5 Starmaster EL Dob
Eyepieces: TV Plossls: 32mm, 15mm, 11mm 
Magnification: 50x, 106x
Old reliable. Like several others here, I always use it for one of my
alignment stars, so I see a lot of it! Both Polaris and its little buddy have always
looked white to me, with the primary maybe having a slight bluish tinge. 50x,
106x.

Ambience:
No real ambience, although things got a bit exciting when the dog needed to come out and managed to get her long leash wrapped around the rocker box. That's pretty much the extent of our suburban wildlife!


 

   

Tim Leese
Star: Alpha UMi, Polaris
Date & Time: 16/17 May 2004
00:45UT
Seeing: 7 <1-10 Seeing Scale (10 best)>
Transparency:
Location of site: Northwich, Cheshire. UK
(53° 15' N -2º 33' W)

Site classification: Suburban
Conditions: Nice and clear. 
Sky darkness: 4.3 UMi <Limiting magnitude> 
Telescope: 200mm f/6 Newtonian reflector.
Mount:  Vixen GP.
Eyepieces: 18mm Orthoscopic, 9mm Orthoscopic, 6mm Orthoscopic(x2 barlow)
Magnification: X67, X133, X200(X400)

Polaris must be one of my most observed doubles as I often use this star to fine-tune the collimation of my Newtonian reflector. On this occasion, Polaris was as wonderful as always with it's tiny companion clearly in view at all magnifications used. The best view was using the 18mm orthoscopic where the companion appeared as a sky blue colour against the pale yellow colour of Polaris. I never get tired of observing Polaris. However, I quite soon get tired of trying to keep my Newtonian reflector in perfect collimation.

 

    

Michael Sutherland
Star: Alpha UMi, Polaris
Date & Time: 1 June, 2004. 10:25 pm PDT
Seeing: 5 <1-10 Seeing Scale (10 best)>
Transparency: Fair
Location of site: Beaverton, OR, USA
45* 29m N, 122* 48m W

Site classification: Suburban
Conditions: Full moon
Sky darkness <Limiting magnitude> 
Telescope: 80mm, F6 refractor
Eyepieces: 18mm Ultima, 5mm SPL
Magnification: 27x, 96x

 I've looked at Polaris so often I almost know by instict where to look
for the secondary. It's interesting when you read old texts that
splitting Polaris used to be a test of your telescope optics. Now
almost any scope can do it and at quite modest powers. It's still fun
to split which I do almost every chance I get.

 
 
William Schart
Star: Alpha UMi, Polaris
Date & Time: May 25, 2004
Seeing: -- <1-10 Seeing Scale (10 best)>. 
Transparency:  <1-10 Scale (10 best)>
Location of site: Texas, USA
Site classification: Suburban
Conditions: full moon 
Sky darkness: --- <Limiting magnitude> 
Telescope: C8
Eyepieces: 25mm 
Magnification

Star: Alpha UMi, Polaris
Date & Time: May 25, 2004
Seeing: -- <1-10 Seeing Scale (10 best)>. 
Transparency:  <1-10 Scale (10 best)>
Location of site: Texas, USA
Site classification: Suburban
Conditions: full moon 
Sky darkness: 4 <Limiting magnitude> 
Telescope: 6 inches Dobsonian
Eyepieces: 35mm, 25mm, 17, and 10mm
Magnification: 32x,  48x, 72x, and 120x
 
An easy split in low power. The primary is yellow and the fainter secondary perhaps is blue.
 
 
 
 
 
 
 
 
 
 
 
 
 
to compare what I could do with the smaller aperture.

I didn't make the split until I got to the 17mm, however, I then went
back to the 25mm and got it.


 

 


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