Castor
- alpha Gemini
 Observing
results:
Separation: 4.2"±0.8"
Position angle:
61°±5°
Place
mouse pointer above the photo to see the labels.
|
 |
 |
Castor
(alpha Gemini) 13.5.2001 (19:15 UT)
Resolution: 0.83 arcsec/pixel (K3CCDTools X2 mode)
Equipment: web cam at prime focus of 3"
Bushnell NewtonianCastor
is multiply star system which consists of 3
couples of stars - Castor A, B, C. Each couple is
spectroscopic double star.
The A couple (magnitude 1.58) is separated from
the B couple (magnitude 2.88) by distance
ranging from 1.8" to 6.5" over a period
of approximately 400 years. They are currently
about 4" apart, forming a 71° angle with a
north-south axis. The C couple (magnitude 9.83)
is currently 72.5" from the A couple at a
165° angle, around which it gravitates with a 10,000
year period.
After my
observations I thought that I am wrong. Position
angle of Castor B according to four (independent
?) sources (2 from book, 1 from internet and 1 according
to Skymap 7) is 171°. My observations (visual
and with webcam) showed 61°±5°.
Looking at Sky2000 catalogue (3.3" @ 75°)
indicated that I can believe my eyes and my
webcam.
|
Gamma Delphini
 Observing
results:
Separation: 9.3"±0.8"
Position angle:
265°±1°
Place
mouse pointer above the photo to see the labels.
|
 |
Gamma Delphini 1.12.2000
(17:43 UT)
Resolution: 0.83 arcsec/pixel (K3CCDTools X2 mode)
Equipment: web cam at prime focus of 3"
Bushnell Newtoniang1
Del is star of 4.26 magnitude. g2 Del (magnitude
5.09) is separated by angle distance of 9.6".
Position angle is 268°.
My observations
correspond to catalogue data.
|
Epsilon Lyrae (3" Bushnell)
 Observing
results:
Separation: 3'31"±0.8"
Position angle:
171.8°±0.5°
Place
mouse pointer above the photo to see the labels.
|
 |
Epsilon Lyrae 1.12.2000 (17:30
UT)
Resolution: 1.65 arcsec/pixel
Equipment: web cam at prime focus of 3"
Bushnell Newtoniane1
Lyr is star of 5.01 magnitude. e2 Lyr (magnitude
5.21) is separated by angle distance of 3'31".
Position angle is 172°.
My observations
correspond to catalogue data.
|
Epsilon Lyrae (8" OrionOptics)
Observing
results:
Separation: 3'32"±0.5"
Position
angle: 171.7°±0.5°
|
Place mouse
pointer above the photo to see the labels. |
|
Epsilon Lyrae 29.9.2001 (20:49
UT)
Resolution: 0.48 arcsec/pixel
Equipment: web cam + Barlow 2X + 8"
OrionOptics Newtonian (f=1200mm)e1 Lyr is star of
5.01 magnitude. e2
Lyr (magnitude 5.21) is separated by angle
distance of 3'31". Position angle is 172°.
Separation of e1, e2 components is
about 2". The image is the best frame
selected from raw AVI sequence (no stacking was
used).
My observations
correspond to catalogue data.
|
 |
Epsilon Bootis
 Observing results:
Separation: 3.1"±0.4"
Position angle:
346°±5°
Place
mouse pointer above the photo to see the labels.
|
 |
Epsilon Bootis (Izar) 15.6.2001
(22:22 UT)
Resolution: 0.48 arcsec/pixel
Equipment: web cam + 2X Barlow + 8"
OrionOptics NewtonianA component of e Boo is star of 2.50
magnitude. B component (magnitude 4.66) is
separated by angle distance of 2.9".
Position angle is 339°-341° (according to
various sources). A component is blury because of
seeing conditions and its brightness. Because of
nice colors (A is white-yellow, B is blue) Struve
cold it Pulcherima (the most beutiful).
My observations
correspond to catalogue data.
|
Albireo
(Beta Cygni)
Observing results:Separation: 34.8"±0.8"
|
 |
Albireo (Beta Cygni) 2.12.2001
(19:52 UT)
Resolution: 0.96 arcsec/pixel
Equipment: web cam + 8" OrionOptics
NewtonianVery
nice COLOR double- star. The components have
yellow (orange) and blue color. The blue
component is about 2 mag fainter than the yellow
one. That means the brightness ratio is 1:6.3.
The monitor brightness must be properly adjusted
in order the fainter star was visible.
The image is the best frame selected from raw
AVI sequence (no stacking, no processing was used).
|
Back to Sky
Computer generated images,
real images, drawings and texts are property of the
author and may not be reproduced or used without
permission of author.
Last Update: 2.12.2001
|
