| Richard Harshaw | ||||
| Star: Otto Struve 525
Location of site: Northern Kansas City, Missouri (USA) 94d 30m west longitude, 39d 15m north latitude 980 ft above Mean Sea Level Date of observations (UT): UT: 02:15 of Sept. 16, 2000 Site classification: suburban Sky conditions: seeing-- 4/10 up to 8/10, in short spans of time transparency-- 8 out of 10 limiting visual magnitude-- 5.0 mag Telescope: Celestron C-8 Eyepiece: 20mm (104x) |
Position: 1855+3358
Magnitudes: 6.0, 10.2, 7.7 Sep/PA's: AB = 1.7 + / 128 -. AC = 45 - / 350 -. Year of last measurement: 1958 Distance (light years): 1,340? Luminosity (in suns): 730? Eyepiece and magnification: 20mm (104x). Colors noted: dY!! and dB!!. Webb saw them as Y, ?, and B and called them a "beautiful miniature of Beta Cygni." The colors are indeed wonderful! Star A is a spectroscopic binary. First measure: AB = 1.2" @ 131, AC = 45.5" @ 351. Rating = 2. Thank you, Paolo, for submitting such a beautiful double star! |
|||
| William L. Schart | ||||
| Star:
Otto Struve 525
Date & Time: 9/16/00 8:32 pm CDT Seeing: 8 <1-10 Seeing Scale (10 best)> Location of site: Killeen, TX (Lat 31 N, Elev 600 ft) Site classification: Suburban Sky darkness: 4 <Limiting magnitude> Telescope: Orion 6" Dob. Magnification: 32x, 98x |
Easily found: forms a triangle with lambda and beta Lyrae and is bright
enough to be easily detected in the finder. Easily split, even at low power.
The primary is bright yellow and the secondaray is blue, in fact, for a
mmoment I thought I might have mistakenly gotten onto Albiero! Separation
48", PA 348.
|
|||
| Jim Jones | ||||
| Star:
Otto Struve 525
Date & Time: 0535 UTC, 17 Sept, 2000 Seeing: 8 <1-10 Seeing Scale (10 best)> Location of site: Lake Oswego, Oregon, USA Site classification: Suburban Sky darkness: 3.8 <Limiting magnitude> Telescope: 8 inch LX50 SCT Eye Piece(s): 42 mm Ultima Magnification: 47x |
Est PA without insturmentation...345d.
Primary...yellow tending slightly to orange. Companion...blue-white. This pair is an old friend so it was just point and look. Again moon was starting to raise havoc with the field in Lyra. While I was in the neighborhood I popped over to take a peek at the Ring Nebula. Came back about midnight to see if I could find the B component (sep 1.7", PA 128d). No luck. I was also able to view Struve 2421 (mag 8.2/9.6 24.2" @ 59d) in same FOV as added bonus.
|
|||
| Eddy O'Connor | ||||
| Star: Otto Struve 525
Date & Time: 8 -10 p.m local; UT +11. Monday, September 18th 2000 Seeing: 5-6 <1-10 Seeing Scale (10 best)> Transparency: 9. No Moon. Temp 18º C. Windy. Location of Site: Terara, New South Wales, Australia, Long.150.38 degrees; South 34.52. Site Classification: Suburban Sky darkness: 4.5 <Limiting magnitude> Instrument: 8" F9 Dobsonian Magnification: 72X (25mm Kellner) |
The Lyre, unfortunately, is low from my latitude and many
of its outstanding features are neglected. Even Hartung has not included
this gem on his list. This was my first visit this fine double and its
similarity to Beta Cyg was obvious.
Comments: Megastar lists the components as 6.1/9.1, PA as 128 and separation
as 1.7"(!) and the spectra as A8+G5 III. The Observer's Guide lists the
magnitudes as 6 and 10.2(!) and the separation also as 1.7" I see
the colours as Deep yellow and Blue and the separation as wide at low power.
The gem-like appearance of this fine double,even at low altitude, makes
this a Hall of Fame double in medium telescopes
|
|||
| Patrick J. Anway | ||||
| Star: Otto Struve 525
Date & Time: Sept. 17, 2000, 11pm EDT (0300 UT) Seeing: 7 <1-10 Seeing Scale (10 best)> Location of Site: Munising Michigan USA Site Classification: Rural Sky darkness: 5.5 (in the holes) <limiting magnitude> Sky condition: high clouds, moon rising Temperature: 42º F (5º C) Telescope: Zeiss 63mm/840mm f/13.3 Eyepieces: 7mm, 10mm, 16mm, 18mm orthos
|
Using 16mm for 52X, I saw yellow and light blue - very
nice pair.
|
|||
| Ilario Melandri | ||||
| Star:
Otto Struve 525
Date & Time: 22/09/2000 – 18.40 UT Seeing: 6 <1-10 Seeing Scale (10 best)> Location of site: Italy, Ravenna, San Romualdo, Lat 44 32’N Lon 12 08’E Elevation: 0 m Site classification: Rural Sky darkness: 4.5 <Limiting magnitude> Temperature: +16C Telescope: 150 mm f/15 achromatic refractor (lens by Romano Zen, Venice). Magnification: 140x (Plossl 16mm) |
The sep. of 45.4” at a distance of 1330 light years, gives the
incredible distance of 18500 Astronomical Units, more than 230 times the diameter of the Pluto’s orbit around the Sun. |
|||
| Tom Teague | ||||
| Star:
Otto Struve 525
Date & Time: 2000 September 23 (2110 UT) Seeing: 7 <1-10 Seeing Scale (10 best)>. Location of site: Chester, England (53 11 08N; 02 51 39W) Site classification: Suburban Sky darkness: 3 (thin high cloud) <Limiting magnitude> Telescope: 63mm Zeiss Telementor refractor Magnification: x53, x84, x140, x210 |
Easy at all powers. Colour of comes difficult to discern and
even harder to describe (perhaps because I am observing through a bank
of cloud). At x53, pale yellow and lilac. At higher powers,
the comes seems a little more bluish in colour, but in the end I plump
for "pale yellow and lilac" as the least unsatisfactory verbal description.
PA estimated at 340.
|
|||
| Mary Flanagan | ||||
| Star:
Otto Struve 525
Date & Time: 26 Sep 2000 04:35; CDT 11:35 Seeing: From 4 to 7 <1-10 Seeing Scale (10 best)> Transparency: around 8 (1-10) Location of site: Apple Valley MN, USA 93d 14m 25s W; 44d 45m 17s N Site classification: Suburban Sky darkness: ~4 <Limiting magnitude> Telescope: 8" f/6 Dobsonian Magnification: 37x (32mm TV Plossl) |
Both components appeared off-white. There seemed to be a greater magnitude
difference than the 6 & 7.7 given. This, and a session this morning
with my
trusty SkyMap zoom function, leads me to wonder if I hit the wrong star. Think I'd better revisit this one before claiming it. Olympic commentary: Good grief! Did she mistake the uneven parallel
bars for
|
|||
| Tim Leese | ||||
| Star:
Otto Struve 525
Date & Time: 28 September 2000 ( 20:00 UT ) Seeing: 5-6 <1-10 Seeing Scale (10 best)> Location of site: Cheshire. UK 53° 15' N –2º 33' W Site classification: Suburban Sky darkness: 3 <Limiting magnitude> Telescope: 200mm f/6 Newtonian scope mounted over a Vixen GP mount (manual slow motion). Any Quoted PA or SEP using micro guide. Magnification: X120 X96
|
For this wonderful pair of stars I used a magnification
of X120 to reveal a really beautiful double star. I found the primary
star to be a yellow colour with the secondary having a blue colour. Using
the microguide at X96 magnification I measured the secondary star (AC)
to be at PA 350deg. As with 70 Oph the microguide appeared to give the
more spectacular
colour contrast. A wonderful system to observe, first time observation for me this one. I was unable to observe the closer, dimmer, companion (AB) due to poor seeing conditions, I think!!
|
|||
| Mary Flanagan | ||||
| Star:
Otto Struve 525
Date & Time: 29 Sep 2000 03:43 UT; 28 Sep 22:43 CDT Seeing: 7 <1-10 Seeing Scale (10 best)> Transparency: 6 (1-10) Location of site: Apple Valley MN, USA 93d 14m 25s W; 44d 45m 17s N Site classification: Suburban Sky darkness: 3 <Limiting magnitude> Telescope: 8" f/6 Dobsonian Magnification: 37x |
Got the right one this time; nice wide pair @37x. Yellow and
off-white, with a slight bluish tinge at times on the B component.
Olympic commentary: Always watch where you plan to land, and you won't
have
|
|||
| Pino Bandini | ||||
| Star: Otto Struve 525
Location of site: Ravenna, Italy Date of observations (UT): 28/09/2000 – 17.58 UT Site classification: Urban Sky conditions: Seeing: 5 (10 best) Temperature: +22C Limiting visual magnitude: -- Telescope: Celestron 8 Magnification: 200x (Plossl 10mm) |
Note: main component bright white, 2nd component with
gold/green tint.
 |
|||