The Sun, all i can say is WOW!!
mister
for my ETX 90 w/badder astrofilm and all i can
say is WOW WOW WOW!. having never seen
the sun through a telescope first hand this was
a exciting new experince for me. if i had known
how great this was i would have done this long ago
.
well lets start saving for a solarmax H-Alpha now!!
lets see walking to work saves on gas money.
hell i can get by on 2 meals a day.
1 shower a week saves on soap and the water bill.
the cats can eat mice.
i know i can think of more just giving some time.
back 2 matters at hand
i've got some new ?? now
1. do sun spots move from east to west from our point of view?
2. does the sun rotate from e to w or w to e form our point of view?
i know i'll think of more
TIA Roger
sheep defender
wrote:
>well i spent yesterday buliding a solar filter
>for my ETX 90 w/badder astrofilm and all i can
>say is WOW WOW WOW!. having never seen
>the sun through a telescope first hand this was
>a exciting new experince for me. if i had known
>how great this was i would have done this long ago
>.
>well lets start saving for a solarmax H-Alpha now!!
>
>lets see walking to work saves on gas money.
>hell i can get by on 2 meals a day.
>1 shower a week saves on soap and the water bill.
>the cats can eat mice.
>i know i can think of more just giving some time.
>
>back 2 matters at hand
>i've got some new ?? now
>
>1. do sun spots move from east to west from our point of view?
Sunspots don't move at all, they rotate with the Sun, they're centers of
magnetic disturbances on the Sun's 'surface'.
>2. does the sun rotate from e to w or w to e form our point of view?
Every significant gravitational mass in this system moves around our
counterclockwisely rotating star in the counterclockwise direction
likewise!, as seen from above, -designated that way only because most
humans live in the Northern Hemisphere. I assume that the original cloud
accreted with 'this' surplus of counterclockwise energy, it might have
been twisted through the billions of years with reference to the North
Pole of the Galaxy.
It's curious that our system revolves 440,000 mph around the galaxy, along
with the rest of the stars (but they, being on average, much younger, only
revolve at 410,000 mph), in the CLOCKWISE direction as seen from above.
We're actually 50 LYs above the plane of the Galaxy currently, and now
moving 7 kps upward to reach 250 LYs above the mid-plane within another 14
million years. So using the North Star reference doesn't seem so
arbitrary, we crossed through the plane 2 million years ago and now we'll
be above the plane for another 31 million years!
But to answer your observing question, the Sun and its spots move from
right to left across the field, but in any case, solar analysts call the
right edge of the Sun thru a scope, the east limb, and the left edge of
the Sun the west limb. It takes a little getting used to, until you
realize that any energetic activity which will surprise you, will be
likely coming 'fully formed' around from the backside of the Sun popping
into view on the east limb, to eventually affect our puny planet! The
west limb is relatively boring, or at least it was when I was a solar
analyst, heh. All active regions there are heading around behind the Sun,
not to emerge again for 2 weeks.
The Sun is such a dynamic mass that within those 2 weeks the regions
rotating into view again will be much changed!, the strong ones will
barely persist and usually won't be recognizable, but some weak ones might
have grown into violent monsters! It's quite humbling to realize that
thousands of full out thermonuclear wars are playing out in direct view
above us only 93 million miles away on most every peaceful, sunny day.
People sunning on a sultry beach have no common sense, and they apparently
can't be taught that the solar furnace has not been growing hotter for
millions of years solely to give them a cosmetic singe.
> i know i'll think of more
>TIA Roger
Ask way, Roger, I've seen quite a few outbreaks.
Patrick Gaul
light on (pardon the pun) is differential rotation...with the sun being a
dynamic mass of plasma, I understand that different lattitudes rotate at
slightly different angular velocities...I believe it tends to be greater at
the solar equator and decreases in speed towards the poles. The net effect
is that sunspots at different solar latitudes will tend to drift away from
each other in a kind of "shearing" motion. Is this right, or am I right out
of it?
"sheep defender" <sdsds...@rocketshoot.com> wrote in message
news:sdsdsdsdsd-04...@lc0672.zianet.com...
Joseph B. Gurman
<p_g...@REMOVETHISSTRINGyahoo.com> wrote:
> Another aspect of the rotation of the sun that you may be able to shed
> some
> light on (pardon the pun) is differential rotation...with the sun being a
> dynamic mass of plasma, I understand that different lattitudes rotate at
> slightly different angular velocities...I believe it tends to be greater
> at
> the solar equator and decreases in speed towards the poles. The net
> effect
> is that sunspots at different solar latitudes will tend to drift away
> from
> each other in a kind of "shearing" motion. Is this right, or am I right
> out
> of it?
It is right. Th ephotospheric (surface) rotation rate is ~ 25 days
at the sola requator and may be as long as 35 days at the solar poles.
Until the advent of global heliosesimology, the only way to determnine
differential rotation rates was by measuring the rotation of sunspots at
different solar latitudes. (I believe this was first done accurately by
Newton and Nunn sometime in the first half of the 20th century.) Now, we
can even "see" the rates at which the interior of the Sun rotate.
See:
http://sohowww.nascom.nasa.gov/explore/lessons/diffrot9_12.html
and:
http://soi.stanford.edu/press/ssu8-97/ .
HTH,
Joe Gurman
Anthony and Christopher Seal
wrote:
Hi Roger,
I hope from after your first look at the Sun you will do it on a
regular basis. You will see many great things happen to sunspot groups
they will develop up to very nice complex group in just a few day's
and you may also see them decay as well. Don't forget to look out for
faculae as well I find this amazing as well as the sunspots them
self's. On this group there are many very fine and well-experienced
solar astronomers. IMHO your will find any advise or problem you have
will have will be solved by them.
I must admit I do find get sunspot positions a hard thing to get
right, but with help of an astronomer hope now to have solved this
problem once and for all! I like to be correct as I send my figures to
the BAA. I have added a few web sites below, using these will help you
get started plus let you see plenty of other astronomers web site by
links on these sites, I have added my web site it is the very bottom
one, good surfing and happy solar observing.
http://www.digilife.be/club/Franky.dubois/default.htm
http://www.atm.dal.ca/~andromed
http://www.acseal.freeserve.co.uk
Anthony.