Struve 2819

Tim Leese
Star: Struve 2819
Date & Time: 14/15 July 2002, 23:20 UT
Seeing: 6-7 <1-10 Seeing Scale (10 best)>
Transparency:  <1-10, 10 best>
Location of site: Northwich, Cheshire. UK.
53º 15' N -2º 33' W
Site classification: Suburban
Sky darkness: 4.2 ( UMi ) <Limiting magnitude>
Conditions: Clear and still sky, Milky Way on view after midnight ( local time )
Telescope: 200mm f/6 Newtonian reflector.
Mount:  Vixen GP.
Eyepieces:: 18mm Orthoscopic, 9mm Orthoscopic, 6mm Orthoscopic
Magnification: X67, X133 ,X200
18mm Or--- An absolutely stunning view with STF 2819 in the centre of 
field.    A triple system? ( STF 2816 ) could be seen preceding in a 
very rich field containing a myriad of faint stars. This view got a 
well-deserved HS 1 on the Harshaw scale.
Both stars of STF 2819 appeared to be a white colour. STF 2816 
appeared to have a pale yellow primary star with two blue companions.
A splendid view which merited a sketch of some of the brighter stars 
on view. 

Ambience: One thing us Brits like to do when the sun finally shines 
through the clouds is to cut and trim our hedge boundaries. 
Unfortunately this means only one thing, newly cut privet and 
hawthorn trimmings burned slowly though the night.  Unluckily for me 
my two neighbours had been very busy during the day and both lit very 
smoky bonfires at this time not far from where my telescope was 
placed.  My observing was cut short by a few hours due to ¡tears I 
couldnít hide!. 


Dave Moore
Star: Struve 2819
Date & Time: 21st July 2002, 00.24 BST
Seeing:  <1-10 Seeing Scale (10 best)>
Transparency:  <1-10, 10 best>
Location of site: Charminster, Bournemouth, Dorset, UK (51 N 1 W)
Site classification: Suburban
Sky darkness: 3.8 <Limiting magnitude>
Moon: Yes, lots
Telescope: Meade LX-90 8" f/10 (a.k.a. "Lucy")
Eyepieces:: 30mm Celeston Ultima, 12.5mm
Celeston Ultima, 8mm Televue Radiam,
Generic 2x Barlow
Magnification: 67x, 160x, 250x
A faint slightly uneven pair of white and blue-white stars split well 
at 67x. 160x reveals the colours to be white and blue. In the same 
FoV at 67x as the spectacular triple Struve 2816. Start of a chain of 
four Struve multiple stars which covers only about two FoVs at 67x 
and which also includes Struves 2816, 2815 and 2813. 


Steve Bodin
Star: Struve 2819
Date & Time: July 19 and 20, 2002
Seeing: 3 <1-10 Seeing Scale (10 best)>
Transparency: fair
Location: Silverdale WA, USA
Site classification: Suburban
Sky darkness: 4.5 <Limiting magnitude>
Telescope: Meade 107D on ETX mount
for visual and 17.5 inch DOB for video
Eyepieces: 24mm Koenig, 19mm Televue,
10mm Homebuilt, 7mm Ortho
Magnification: 42x, 52x,100x,143x
Additional: PC164C video
This is a wonderful field! Many doubles and faint stars scattered about. I first confused STF 2816, a triple, with the subject star. The 4 inch showed two blue stars dimmer than the triple nearby. Measurements: 12.9 sec at 056 deg PA. Just for the record, STF 2816 measures AC 12.1 sec at 118 deg PA and AD, 20.7 sec at 337 deg PA. AB is a pair for 60inchers at 0.1 sec (what's that DI?)


Bob Hogeveen
Star: Struve 2819
Date & Time: July 29, 2002 (23.00) 
Seeing: 6 <1-10 Seeing Scale (10 best)>
Transparency: 5 <1-10, 10 best>
Location of site: Annen, The Netherlands, 53N, 6E 
Site classification: Village backyard 
Sky darkness: 4 <Limiting magnitude>
Moon: 3/4 moon below horizon
Telescope: Guan Sheng 80mm f/6 refractor and C11 
Eyepieces:: 25mm Vixen plossl on 80mm, 40mm Pentax SMC XL on C11
Magnification: 20x, 70x
Harshaw Scale: 3 for 80mm, 2 for C11  <1-5; 1 best>
The pair lies in the large open cluster Trumpler 37, which makes the field extremely rich, especially with low power.
The bright triple system STF2816 in the same FOV attracks all the attention, STF2819 is quite ordinary and somewhat uninteresting next to that. The C11 brings out a yellowish color of the primary. Of course the wonderful view with the C11 and the 40mm Pentax makes the view with the 80mm refractor grow pale.



Stuart Clough 
Star: Struve 2819
Date & Time: 03.08.02, 2245 - 2255 UT
Seeing: 6 <1-10 Seeing Scale (10 best)>
Transparency:  <1-10, 10 best>
Location: Near Halifax, West Yorkshire, England.
Site classification: Suburban
Sky darkness: 4.0(U.Mi.) <Limiting magnitude>
Temperature: 12ºC 
Conditions: 1/8 cloud, light NE'ly breeze, some high haze unevenly distributed
Telescope: Orion Optics UK GX250, 10" f/4.8 Newtonian
Mount: Vixen GP 
Magnification: 60x
What a superb field!. X60 split the subject into a very satifactory white and pale blue pair. The show was undoubtedly stolen by the nearby multiple star STF 2816 with its magnificent class O6 primary and two obvious bluish companions, together with many other suns of varying colour and brightness

Good to enjoy this stunning vista, but not for long as the cloud rolled in and put paid to the night's session.


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