| Carol Lakomiak | ||||
| Star:
Otto Struve 499 A-Bc
Date & Time: July 8-9 2003 Seeing: 6 [see http://www.backyard-astro.com/Logs/logsreport.html Transparency: 3/10 Location of site: 45°N // Tomahawk WI, USA Site classification: Rural Temperature: 65°F dropping to 50°F Sky darkness: 4/10 (Thompson Scale) Conditions: surprisingly minimal dew; slight breeze from the North Telescope: Meade 8" f/10 LX-10 (Snoopy ) Eyepieces: 32mm, 13.8mm, 9mm, 5mm Magnification: 63x, 147x, 226x, 406x |
Split with 63x, white in
color..
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| Mike Sutherland | ||||
| Star:
Otto Struve 499 A-Bc
Date & Time: 11 July 2003, 11:13 PM PDT Seeing: 6 <1-10 Seeing Scale (10 best)>. Transparency: so-so Location of site: Beaverton, OR, USA 45d 29' N, 122d 48' W Site classification: Suburban Temperature: Warm, mid-70's (F) Sky darkness: 4 <Limiting magnitude> Moon: Telescope: Takahashi FC-60 Eyepieces: 4mmTakahashi Hi-Ortho Magnification: app. 125x |
At
60mm the companion is just visible with direct vision but averted vision
makes it more obvious. Just white and faint white for the primary/secondary. We had a clear Friday evening, so I could wait for the Queen to clear the tree's and not worry about work the next day. After my session I checked the website to see what others have said about these pairs. It's interesting what aperture will do! In one case (Otto Struve 254) I had the primary and secondary reversed from what others report! I guess my 60mm responded to the sharpest light more than the larger one. Seeing was so-so, but still fun to get out and see something. Ambience:
A low patch of lawn in my backyard amongst trees and bushes, (the only
spot I can view Cassiopeia this time of year). Quite warm with a few mosquitoes.
No dew but I was still warm from the heat of the day and took my time cooling
off. I fogged up the EP if I got too close the first hour. There was a
small pool party going on at a neighbors over the fences.
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| Luis Argüelles | ||||
| Star:
Otto Struve 499 A-Bc
Date: 28, July, 2003 , 23:45 -> 2:45 local time Location of Site: Sena de Luna, Spain 42.55N, 05.57W Seeing: 6/7 <1-10 Seeing scale (10 best)> Transparency: 6 -> 5 <1-10 scale (10 best)> Other conditions: No Moon. Temperature:16ºC Altitude: 1,200 mts (3,940 ft) Site classification: Rural Sky darkness: about 5.5 Telescope: Takahashi FS-102 Mount: Vixen GP + Skysensor 2000 Eyepieces: 9mm Nagler, 5mm and 3.8mm Eudiascopics Diagonal: Zeiss prism diagonal Magnifications: 91x, 164x, 215x |
Using the 9mm, the primary
appears as yellowish and I can’t give a color for the secondary. I have
a very slight suspicion on a closer component, but I’m not even a 5% sure.
The field is really rich, located in one of the dense zones of Cassiopeia.
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| Tim Leese | ||||
| Star:
Otto Struve 499 A-Bc
Date: 24-Aug-2003, 23:50 UT. Location of Site: Northwich, Cheshire. UK (53° 15' N -2º 33' W) Seeing: 6 <1-10 Seeing scale (10 best)> Transparency: <1-10 scale (10 best)> Other conditions: clear sky. Site classification: Suburban Sky darkness: 4.3 ( UMi ) <Limiting magnitude>. Telescope: 200mm f/6 Newtonian reflector. Mount: Vixen GP Eyepieces: 18mm Orthoscopic, 9mm Orthoscopic Magnifications: X67, X133 |
18mm Or-------I wasn't completely
certain that I had the correct star here. I found a yellow/orange star
with a tiny mote of a companion requiring averted vision for most of the
time. I glimpsed the companion at the approx listed PA using direct vision
but found it
useful to practice using averted vision on this star. A nice chain of stars drifted through the fov. 9mm Or----------Unexpectedly,
I found it very difficult to see the companion at all, even using averted
vision. Not convinced that I have the right star. Must return to this one
later.
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| Steve Bodin | ||||
| Star:
Otto Struve 499 A-Bc
Date & Time: 4 Sep 2003, 11:45 pm local 8pm to 11:30 pm local Seeing: 5-6 <1-10 Seeing Scale (10 best)>. Transparency: Fair Location of site: Silverdale WA, USA 47N 123W Site classification: suburb-rural Conditions: warm 60F, no wind Sky darkness: 5.6 <Limiting magnitude> Telescope: Celestron C8 Eyepieces: Video camera DX8263SL Magnification: 3x barlow app 1000x
Star: Otto Struve
499 A-Bc
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Stt499
was found after resetting the setting circles on beta Cass and
the proceeding to the correct field. Just cleared my house and about as far as north that I can point the C8 with the Video camera attached. Took three separate images at different integration settings. The wide BC pair was seen easily at x4 integration and measured near the WDS value. Seeing caused the primary to jump around a bit and a closer component could be only guessed. Post op measurement do show something joined to the primary, but it is faint maybe 8.5 to 9th mag. Measurements as follows: A-BC 9.57 at 076.1 deg PA. The new suspected component, lets call it "a": Aa 1.36 sec at 015.5 deg PA, with sigma of 0.20 sec and 4 deg. Needs
further looks with a bigger scope , anyone got a 12 inch to put
As
a supplement to post on STT499 from 4 Sep 2003, I can add that the
So
I give it a 20 percent chance of really being there, need a bigger
Just
posted in Images by Members/Steve Bodin folder a classic double
Seeing
seemed 6-7/10 but the seeing was very 'slow'. You know, the
One more look at the possible extra star in STT 499, but not spotted. A-BC seemed quite easy and measured 7.57 sec at 076.8 deg PA. But nothing noted close to the primary, must have been an illusion the other night, or maybe a variable star. Well I have lowered my probability of an extra companion to 10%. |
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| Morgan Spangle | ||||
| Star:
Otto Struve 499 A-Bc
Date: 9/5/03 2003.679 Location of Site: Larchmont, NY, USA (40.55.26N, -73.44.43) Seeing: 7 <1-10 Seeing scale (10 best)> Transparency: 5 <1-10 scale (10 best)> Other conditions: Temperature: Altitude: Site classification: Sky darkness: Telescope: TEC 203mm Mak-Cass, f/20 Eyepieces: --- Magnifications: 567X |
PA: 76.6
Sep: 9.56" I had clear skies until I started hunting for the "third" element of this one, but of course some high thin clouds immediately swept in, making any conclusions about the mystery guest difficult to obtain. I couldn't see any evidence of a bulge, and certainly not any resolved split. A nice and easy, fairly wide pair. For the measures, I used a Retel micrometer, with a 12mm eyepiece and a Astro-Physics 1.7x Barcon barlow to achieve my magnification value. I'm still working mainly on "calibration stars", to get a really good value for the micrometer, and on my technique for measuringf position angle. But I'm getting close to moving on to more challenging doubles (as you can see, these measures were consistent with the catalogue values of PA 77 and Sep 9.6"), and hope to enter more into this group's discussions soon. Meantime, I'll continue to enjoy the fine writing here! |
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| Bob Hogeveen | ||||
| Galaxies:
Otto Struve 499 A-Bc
Date & Time: September 13 and 14, 2003, 22h LT Sky darkness: 4 <Limiting magnitude> Transparency: 8 <1 worst - 10 best> Seeing: 6 <1-10 Seeing Scale (10 best)> Location of site: Annen, The Netherlands 53ºN, 6ºE Site classification: Village backyard Moon: Just rising in the East Temperature: 15º C Telescope: Celestron C11 Eyepieces: 10mm Plossl, 5mm LV Magnification: 280x, 560x |
Two reasonably clear nights
in a weekend gave me a good oppertunity to see if anything evidence of
the mystery-component of this pair could be obtained.
The result of the first observation
was that nothing more than an ordinary A-B pair could be seen. The central
star-image of A was reasonably sharp and steady, even with 560x. Around
it irregular and shaky portions of diffraction patterns were seen, on some
moments taking shape as close virtual companion. But these images had short
lives an appeared on different positions. Conclusion after watching this
vivid image for a while can only be that no real companion could be detected.
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