valleygeocacher
Well-known member
- Joined
- Aug 17, 2005
- Posts
- 57
Thanks to Sky&Telescope, here's this week's interesting facts
You can sign up for their weekly newsletter by visiting http://skyandtelescope.com/shopatsky/emailsubscribe.asp
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* * * SKY & TELESCOPE's SKYWATCHER'S BULLETIN - November 21, 2005 * * *
ASTEROID THREADS A NEEDLE
Early Wednesday morning, November 23rd, near 5 a.m. Eastern Standard Time
(2 a.m. Pacific Standard Time), the asteroid 712 Boliviana (magnitude
10.6) threads the gap between the wide double star Theta-1 and Theta-2
Tauri near Aldebaran in the Hyades. The two stars are 6 arcminutes apart,
and Boliviana passes almost midway between them. Sketch the faint stars
that your telescope shows in this area a few hours beforehand, then
compare later to see which one moves.
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MARS UPDATE
Bright orange Mars shines high in the east during evening, only a little
less brilliantly than when it was closest around the beginning of
November. From November 21st through 28th, Mars dims a trace from
magnitude -1.9 to -1.7 and shrinks from 18.3 to 17.2 arcseconds in
apparent diameter. Keep watch! See our article:
http://SkyandTelescope.com/observing/objects/planets/article_1612_1.asp
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TUNE UP YOUR TELESCOPE
To get the sharpest view of Mars or anything else, you need to make sure
your telescope optics are properly collimated (aligned). They may often
get a little out of whack -- especially in a reflector. The procedure is
simple; see "How To Collimate Your Newtonian Reflector" at
http://skyandtelescope.com/howto/scopes/article_787_1.asp
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SKY AT A GLANCE
Saturn shines to the right of the waning Moon after they rise very late
this evening (Monday the 21st). Although they look close together, Saturn
is 3,250 times farther away.
On the evenings of the 23rd and 26th, Algol goes through eclipses that are
well timed for skywatchers in North America:
http://SkyandTelescope.com/observing/ataglance
You can sign up for their weekly newsletter by visiting http://skyandtelescope.com/shopatsky/emailsubscribe.asp
========================================================================
* * * SKY & TELESCOPE's SKYWATCHER'S BULLETIN - November 21, 2005 * * *
ASTEROID THREADS A NEEDLE
Early Wednesday morning, November 23rd, near 5 a.m. Eastern Standard Time
(2 a.m. Pacific Standard Time), the asteroid 712 Boliviana (magnitude
10.6) threads the gap between the wide double star Theta-1 and Theta-2
Tauri near Aldebaran in the Hyades. The two stars are 6 arcminutes apart,
and Boliviana passes almost midway between them. Sketch the faint stars
that your telescope shows in this area a few hours beforehand, then
compare later to see which one moves.
-----------------------------------------------------------------------
MARS UPDATE
Bright orange Mars shines high in the east during evening, only a little
less brilliantly than when it was closest around the beginning of
November. From November 21st through 28th, Mars dims a trace from
magnitude -1.9 to -1.7 and shrinks from 18.3 to 17.2 arcseconds in
apparent diameter. Keep watch! See our article:
http://SkyandTelescope.com/observing/objects/planets/article_1612_1.asp
-----------------------------------------------------------------------
TUNE UP YOUR TELESCOPE
To get the sharpest view of Mars or anything else, you need to make sure
your telescope optics are properly collimated (aligned). They may often
get a little out of whack -- especially in a reflector. The procedure is
simple; see "How To Collimate Your Newtonian Reflector" at
http://skyandtelescope.com/howto/scopes/article_787_1.asp
-----------------------------------------------------------------------
SKY AT A GLANCE
Saturn shines to the right of the waning Moon after they rise very late
this evening (Monday the 21st). Although they look close together, Saturn
is 3,250 times farther away.
On the evenings of the 23rd and 26th, Algol goes through eclipses that are
well timed for skywatchers in North America:
http://SkyandTelescope.com/observing/ataglance