Double Star Images

Images of Double Stars that have not yet been measured in PA & Sep by myself. All these images are the result of staking AVI webcam frames using Cor Berrevoet's Registax

Note: PA & Sep and visual mags are taken from The Washington Double Star Catalogue. Distance in light-years is taken from various sources & catalogues.

Date: 2006/08/30 03:04UT
Seeing: 8/10 Good
Scope: 14" SCT @f10
Webcam: Philips Toucam
Direct View, 164 frames
Location: Doncaster AS Ob.
Star: STF 180AB, Gamma Aries
PA:1° Sep:7.4"
Mags:4.5, 4.5
Distance: 204 light-years?
PA & Sep 2005 WDS

Date: 2006/08/30 02:09 UT
Seeing: 8/10 Good
Scope: 14" SCT @f10
Webcam: Philips Toucam
Direct View, 231 frames
Location: Doncaster AS Ob.
Star: STFA 38AD, Zeta Lyra
PA:150° Sep: 43.6"
Mags:4.3, 5.4
Distance: 154 light-years?
PA & Sep 2005 WDS

Date: 2006/08/29 02:07UT
Seeing: 8/10 Good
Scope: 14" SCT @f25
Webcam: Philips Toucam
Direct View, 82 frames
Location: Doncaster AS Ob.
Star: H 24, 107 Aquarius
PA:135° Sep: 6.8"
Mags:5.6 6.4
Distance: 212 light-years?
PA & Sep 2003 WDS

Date: 2006/07/28 23:16UT
Seeing: 7/10 Good
Scope: 14" SCT @f25
Webcam: Philips Toucam
Direct View, 459 frames
Location: Doncaster AS Ob.
Star: STF 2084, Zeta Hercules
Grade 1 Binary, Period: 34.45 yrs
PA:218° Sep:0.9"
Mags:2.9 5.4
Distance:
PA & Sep 2005 WDS

Date: 2006/07/28 23:23UT
Seeing: 7/10 Good
Scope: 14" SCT @f10
Webcam: Philips Toucam
Direct View, 297 frames
Location: Doncaster AS Ob.
Star: STF 2040 Kappa Hercules
Name: Marfik
PA:15° Sep:27.3"
Mags:5.1 6.2
Distance:
PA & Sep 2005 WDS

Date: 2006/07/08 02:12UT
Seeing: 7/10 Good
Scope: 14" SCT @f10
Webcam: Philips Toucam
Reversed View, 243 frames
Location: Doncaster AS Ob.
Star: STF 93AB, Alpha UMi
Name: Polaris
PA:233° Sep:18.6"
Mags:2.1, 9.1
Distance: 432 lyrs?
PA & Sep 2005 WDS

Date: 2006/05/04 00:23UT
Seeing: 7/10 Good
Scope: 14" SCT @f25
Webcam: Philips Toucam
Location: Doncaster AS Observatory
Star: STF 1890
Name: 39 Bootes
PA:46° Sep:2.7"
Mags:6.3 6.6
Distance: 21.5 light-years
PA & Sep Measures 2004 WDS A very tight pair that require a steady
and transparent sky to observe at high
powers.

Date: 2006/03/05 UT
Seeing: 7/10 Good
Scope: 14" SCT @f10
Webcam: Philips Toucam
Location: Doncaster AS Observatory
Star: STF 1268
Name: Iota Cancer
PA:308° Sep:30.7"
Mags:4.1 5.9
Distance: 297.9 light-years?
PA & Sep Measures 2003 WDS

Date: 2006/03/02 UT
Seeing: 4/10 Poor
Scope: 14" SCT @f25
Webcam: Philips Toucam
Location: Doncaster AS Observatory
Star: STF 774Aa-B Zeta Orion
Name: Alnitak
PA:166° Sep:2.6"
Mags:1.8 3.7
Distance: 817 light-years?
PA & Sep Measures 2002 WDS Star was very low to the SW horizon
when imaged making the Seeing poor, so
not a clear seperation of the 'A' & 'B'
stars but the companion can just about
be seen as a dark smear. Needs reimaging
later in 2006 and measures to be taken.

Date: 2006/02/28 UT
Seeing: 7/10 Good
Scope: 14" SCT @f25
Webcam: Philips Toucam
Location: Doncaster AS Observatory
Star: STF 1196AB-C, Zeta_2 Cnc
Name: Tegrine
PA: AB:58° Sep: AB:1.0"
PA: AC:70° Sep: AC:5.9"
Mags: 5.3, 6.2, 5.5
Distance: 79.18 light-years
PA/Sep: AB, 2005 AB-C, 2004 WDS An easy Double in small scopes
but quite tricky to separate the
very close AB binary. Primary
is white F8V class. The 'C-star' is
G8V. I did not notice the'B-star'
at the time of observation, am
pleased that it is visible on
the resulting image.
Period of orbit AB stars is 59.yrs.
Separation range is 0.6" to 1.2".
Period of orbit of C-Star is 1,150 yrs.
Urgent measurement by myself is required!

Date: 2006/02/18 21:58UT
Seeing: 7/10 Good
Scope: 14" SCT @f25
Webcam: Philips Toucam-791 frames
Location: Doncaster AS Observatory
Star: STF 752ABC Iota Orion
Name: Nair al Saif
PA: AB141°, AC103°
Sep: AB11.3", AC49.4"
Mags: 2.9 7.0 9.7
Distance: ~1300-2000 light-years
PA & Sep Measures 2002 WDS Although there are 3 stars visible, there
is a spectroscopic companion to the A-Star,
making this a quadruple system. Iota is one of
the hottest and most luminious stars in
the constellation of Orion. It will go
Supernova in the near future...on a
cosmic time-scale, that is!

Date: 2006/02/18 22:11UT
Seeing: 7/10 Good
Scope: 14" SCT @f25
Webcam: Philips Toucam-338 frames
Location: Doncaster AS Observatory
Star: STF 762ACDE Sigma Orion
Name:
PA: AC238°, AD84°, AE62°
Sep: AC11.5", AD12.7", AE41.5"
Mags: 3.7 8.7 6.5 6.3
Distance: ~1150 light-years
PA & Sep Measures 2002 WDS Although there are 4 stars visible, there
is a spectroscopic companion to the A-Star,
making this a system of 5 stars. It is worth noting
that the C-star is the faintest of them all.

Date: 2006/02/18 22:36UT
Seeing: 7/10 Good
Scope: 14" SCT @f25
Webcam: Philips Toucam-344 frames
Location: Doncaster AS Observatory
Star: STF 738AB Lambda Orion
Name: Meissa
PA: 44°
Sep: 4.3"
Mags: 3.5 5.4
Distance: 1000 light-years
PA & Sep Measures 2005 WDS

Date: 2006/02/18 22:56UT
Seeing: 7/10 Good
Scope: 14" SCT @f25
Webcam: Philips Toucam-417 frames
Location: Doncaster AS Observatory
Star: STF 919ABC Beta Monoceros
Name: none
PA: AB133°, AC125°, BC108°
Sep: AB7.1", AC9.9", BC2.9"
Mags: 4.6 5.0 5.3
Distance: 690 light-years
PA & Sep Measures 2003 WDS

Date: 2005/11/29 22:55UT
Seeing: 7/10 Good
Scope: 14" SCT @f25
Webcam: Philips Toucam
Location: Doncaster AS Observatory
Star: STF 202AB Alpha Pisces
Name: Alrischa
PA: 270° Sep: 1.9"
Mags: 4.2 5.2
Distance: 139 light-years
PA & Sep Measures 2004 WDS

Date: 2005/11/29 23:47UT
Seeing: 7/10 Good
Scope: 14" SCT @f25
Webcam: Philips Toucam
Location: Doncaster AS Observatory
Star: STF 518A-BC Omicron_2 Eridanus
Name: Keid
PA: A-BC:104°
Sep: A-BC:83.0"
Mags: 4.4 9.5 11.1
Distance: 16.38 light years
PA & Sep Measures 2002 WDS This triple star is the only known system that
displays three different types of star. The
Primary is yellow G9V class. The other two
components are dwarf stars. A red dwarf
type dM4.5Ve and a white dwarf of type DA.
Also it is the only system where the dwarf
stars can easily be seen.

Date: 2005/11/29 22:40UT
Seeing: 7/10 Good
Scope: 14" SCT @f25
Webcam: Philips Toucam
Location: Doncaster AS Observatory
Star: STF 299AB Gamma Cetus
Name: Kaffaljidhma
PA: 299° Sep: 2.3"
Mags: 3.5 6.1
Distance: 81.28 light years
PA & Sep Measures 2002 WDS

Date: 2005/07/08 UT
Seeing: 7/10 Good
Scope: 14" SCT @f10
Webcam: Philips Toucam, 320x240 px
Location: Doncaster AS Observatory
Star: STFA 37AB-CD
Name: Epsilon Lyrae AB-CD
PA: 174° Sep: 210.5"
Mags: 5.0, 5.2
Distance: 162, 160 light years
PA & Sep Measures 1998 WDS

Date: 2005/05/11 UT
Seeing: 6/10 Moderate
Scope: 14" SCT @f20
Webcam: Philips Toucam
Location: Doncaster AS Observatory
Star: STF 1424AB Gamma Leo
Name: Algebia
PA: 126° Sep: 4.6"
Mags: 2.3 3.6
Distance:
PA & Sep Measures 2005 WDS

---Updated 29/9/2006---

	Date: 2006/08/30 03:04UT Seeing: 8/10 Good Scope: 14" SCT @f10 Webcam: Philips Toucam Direct View, 164 frames Location: Doncaster AS Ob. Star: STF 180AB, Gamma Aries PA:1° Sep:7.4" Mags:4.5, 4.5 Distance: 204 light-years? PA & Sep 2005 WDS
	Date: 2006/08/30 02:09 UT Seeing: 8/10 Good Scope: 14" SCT @f10 Webcam: Philips Toucam Direct View, 231 frames Location: Doncaster AS Ob. Star: STFA 38AD, Zeta Lyra PA:150° Sep: 43.6" Mags:4.3, 5.4 Distance: 154 light-years? PA & Sep 2005 WDS
	Date: 2006/08/29 02:07UT Seeing: 8/10 Good Scope: 14" SCT @f25 Webcam: Philips Toucam Direct View, 82 frames Location: Doncaster AS Ob. Star: H 24, 107 Aquarius PA:135° Sep: 6.8" Mags:5.6 6.4 Distance: 212 light-years? PA & Sep 2003 WDS
	Date: 2006/07/28 23:16UT Seeing: 7/10 Good Scope: 14" SCT @f25 Webcam: Philips Toucam Direct View, 459 frames Location: Doncaster AS Ob. Star: STF 2084, Zeta Hercules Grade 1 Binary, Period: 34.45 yrs PA:218° Sep:0.9" Mags:2.9 5.4 Distance: PA & Sep 2005 WDS
	Date: 2006/07/28 23:23UT Seeing: 7/10 Good Scope: 14" SCT @f10 Webcam: Philips Toucam Direct View, 297 frames Location: Doncaster AS Ob. Star: STF 2040 Kappa Hercules Name: Marfik PA:15° Sep:27.3" Mags:5.1 6.2 Distance: PA & Sep 2005 WDS
	Date: 2006/07/08 02:12UT Seeing: 7/10 Good Scope: 14" SCT @f10 Webcam: Philips Toucam Reversed View, 243 frames Location: Doncaster AS Ob. Star: STF 93AB, Alpha UMi Name: Polaris PA:233° Sep:18.6" Mags:2.1, 9.1 Distance: 432 lyrs? PA & Sep 2005 WDS
	Date: 2006/05/04 00:23UT Seeing: 7/10 Good Scope: 14" SCT @f25 Webcam: Philips Toucam Location: Doncaster AS Observatory Star: STF 1890 Name: 39 Bootes PA:46° Sep:2.7" Mags:6.3 6.6 Distance: 21.5 light-years PA & Sep Measures 2004 WDS	A very tight pair that require a steady and transparent sky to observe at high powers.
	Date: 2006/03/05 UT Seeing: 7/10 Good Scope: 14" SCT @f10 Webcam: Philips Toucam Location: Doncaster AS Observatory Star: STF 1268 Name: Iota Cancer PA:308° Sep:30.7" Mags:4.1 5.9 Distance: 297.9 light-years? PA & Sep Measures 2003 WDS
	Date: 2006/03/02 UT Seeing: 4/10 Poor Scope: 14" SCT @f25 Webcam: Philips Toucam Location: Doncaster AS Observatory Star: STF 774Aa-B Zeta Orion Name: Alnitak PA:166° Sep:2.6" Mags:1.8 3.7 Distance: 817 light-years? PA & Sep Measures 2002 WDS	Star was very low to the SW horizon when imaged making the Seeing poor, so not a clear seperation of the 'A' & 'B' stars but the companion can just about be seen as a dark smear. Needs reimaging later in 2006 and measures to be taken.
	Date: 2006/02/28 UT Seeing: 7/10 Good Scope: 14" SCT @f25 Webcam: Philips Toucam Location: Doncaster AS Observatory Star: STF 1196AB-C, Zeta_2 Cnc Name: Tegrine PA: AB:58° Sep: AB:1.0" PA: AC:70° Sep: AC:5.9" Mags: 5.3, 6.2, 5.5 Distance: 79.18 light-years PA/Sep: AB, 2005 AB-C, 2004 WDS	An easy Double in small scopes but quite tricky to separate the very close AB binary. Primary is white F8V class. The 'C-star' is G8V. I did not notice the'B-star' at the time of observation, am pleased that it is visible on the resulting image. Period of orbit AB stars is 59.yrs. Separation range is 0.6" to 1.2". Period of orbit of C-Star is 1,150 yrs. Urgent measurement by myself is required!
	Date: 2006/02/18 21:58UT Seeing: 7/10 Good Scope: 14" SCT @f25 Webcam: Philips Toucam-791 frames Location: Doncaster AS Observatory Star: STF 752ABC Iota Orion Name: Nair al Saif PA: AB141°, AC103° Sep: AB11.3", AC49.4" Mags: 2.9 7.0 9.7 Distance: ~1300-2000 light-years PA & Sep Measures 2002 WDS	Although there are 3 stars visible, there is a spectroscopic companion to the A-Star, making this a quadruple system. Iota is one of the hottest and most luminious stars in the constellation of Orion. It will go Supernova in the near future...on a cosmic time-scale, that is!
	Date: 2006/02/18 22:11UT Seeing: 7/10 Good Scope: 14" SCT @f25 Webcam: Philips Toucam-338 frames Location: Doncaster AS Observatory Star: STF 762ACDE Sigma Orion Name: PA: AC238°, AD84°, AE62° Sep: AC11.5", AD12.7", AE41.5" Mags: 3.7 8.7 6.5 6.3 Distance: ~1150 light-years PA & Sep Measures 2002 WDS	Although there are 4 stars visible, there is a spectroscopic companion to the A-Star, making this a system of 5 stars. It is worth noting that the C-star is the faintest of them all.
	Date: 2006/02/18 22:36UT Seeing: 7/10 Good Scope: 14" SCT @f25 Webcam: Philips Toucam-344 frames Location: Doncaster AS Observatory Star: STF 738AB Lambda Orion Name: Meissa PA: 44° Sep: 4.3" Mags: 3.5 5.4 Distance: 1000 light-years PA & Sep Measures 2005 WDS
	Date: 2006/02/18 22:56UT Seeing: 7/10 Good Scope: 14" SCT @f25 Webcam: Philips Toucam-417 frames Location: Doncaster AS Observatory Star: STF 919ABC Beta Monoceros Name: none PA: AB133°, AC125°, BC108° Sep: AB7.1", AC9.9", BC2.9" Mags: 4.6 5.0 5.3 Distance: 690 light-years PA & Sep Measures 2003 WDS
	Date: 2005/11/29 22:55UT Seeing: 7/10 Good Scope: 14" SCT @f25 Webcam: Philips Toucam Location: Doncaster AS Observatory Star: STF 202AB Alpha Pisces Name: Alrischa PA: 270° Sep: 1.9" Mags: 4.2 5.2 Distance: 139 light-years PA & Sep Measures 2004 WDS
	Date: 2005/11/29 23:47UT Seeing: 7/10 Good Scope: 14" SCT @f25 Webcam: Philips Toucam Location: Doncaster AS Observatory Star: STF 518A-BC Omicron_2 Eridanus Name: Keid PA: A-BC:104° Sep: A-BC:83.0" Mags: 4.4 9.5 11.1 Distance: 16.38 light years PA & Sep Measures 2002 WDS	This triple star is the only known system that displays three different types of star. The Primary is yellow G9V class. The other two components are dwarf stars. A red dwarf type dM4.5Ve and a white dwarf of type DA. Also it is the only system where the dwarf stars can easily be seen.
	Date: 2005/11/29 22:40UT Seeing: 7/10 Good Scope: 14" SCT @f25 Webcam: Philips Toucam Location: Doncaster AS Observatory Star: STF 299AB Gamma Cetus Name: Kaffaljidhma PA: 299° Sep: 2.3" Mags: 3.5 6.1 Distance: 81.28 light years PA & Sep Measures 2002 WDS
	Date: 2005/07/08 UT Seeing: 7/10 Good Scope: 14" SCT @f10 Webcam: Philips Toucam, 320x240 px Location: Doncaster AS Observatory Star: STFA 37AB-CD Name: Epsilon Lyrae AB-CD PA: 174° Sep: 210.5" Mags: 5.0, 5.2 Distance: 162, 160 light years PA & Sep Measures 1998 WDS
	Date: 2005/05/11 UT Seeing: 6/10 Moderate Scope: 14" SCT @f20 Webcam: Philips Toucam Location: Doncaster AS Observatory Star: STF 1424AB Gamma Leo Name: Algebia PA: 126° Sep: 4.6" Mags: 2.3 3.6 Distance: PA & Sep Measures 2005 WDS