Lunar targets for 4/10/2006 3:00 UTC

The terminator will be at 50.4W lunar longitude at 4/10/2006 3:00 UTC
(4/9/2006 9:00PM). Some targets with Rukl Atlas and LPOD x-refs are
are as follows. Those objects that will cross the terminator later in
the evening are marked "later".

Object Coords Rukl# Notes

C Anaximenes 72.5N44.5W 3 80km

R Sharp 44N50.5W 9 200km small rille

Aristarchus Plateau 23.7N47.4W 18 L100#22; 100km plateau with
c's.
LPOD Gallery images:
http://lpod.org/coppermine/displayimage.php?pos=-73
http://lpod.org/coppermine/displayimage.php?pos=-348
http://lpod.org/coppermine/displayimage.php?pos=-300
http://lpod.org/coppermine/displayimage.php?pos=-140

V Schroter 26N51W 18 L100#17; 160km valley (later)

R Marius 17.9N49W 18 250km sinuous rille

C Marius 11.9N50.8W 29 41km flooded crater

Marius Hills 12.5N54W 18,29 L100#42; 50km of lava domes
(later - 5-8UTC)
LPO Gallery: http://lpod.org/coppermine/displayimage.php?pos=-80

Mtn Hansteen 12S50W 40 30km mountain massif; aka "The
Arrowhead"
LPOD Gallery: http://lpod.org/coppermine/displayimage.php?pos=-351

C Billy 13.8S50.1W 40 46km dark floor
LPOD Gallery: http://lpod.org/coppermine/displayimage.php?pos=-351

C Mersenius 21.5S49.24W 51 L100#44; 84km flooded crater
with chain of craterlets
http://lpod.org/coppermine/displayimage.php?pos=-390

R de Gasparis 25.3S50W 51 L100#91 (later); 130km rille
system
LPOD Gallery: http://lpod.org/coppermine/displayimage.php?pos=-21

C Segner 58.9S48.3W 71 67km degraded crater with
undulating floor

C Bettinus 63.4S44.8W 71 71km

C Kircher 67.1S45.3W 71 73km flooded crater

- Canopus56

P.S. - For determining when nearby objects might appear out terminator
darkness: The speed of the lunar terminator at the equator is approx.
15.4 km per hour; at 30N it is approx. 13.4km per hour; at 50N, approx.
9.9km per hour.

Last night (4/8/06) when showing people the moon, just past the terminator
on the dark side was two peaks of a crator wall was in sunlight while the
rest was still in darkness. So it was a nice effect for the people to see.


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"canopus56" wrote in message
oups.com...
The terminator will be at 50.4W lunar longitude at 4/10/2006 3:00 UTC
(4/9/2006 9:00PM). Some targets with Rukl Atlas and LPOD x-refs are
are as follows. Those objects that will cross the terminator later in
the evening are marked "later".

Object Coords Rukl# Notes

C Anaximenes 72.5N44.5W 3 80km

R Sharp 44N50.5W 9 200km small rille

Aristarchus Plateau 23.7N47.4W 18 L100#22; 100km plateau with
c's.
LPOD Gallery images:
http://lpod.org/coppermine/displayimage.php?pos=-73
http://lpod.org/coppermine/displayimage.php?pos=-348
http://lpod.org/coppermine/displayimage.php?pos=-300
http://lpod.org/coppermine/displayimage.php?pos=-140

V Schroter 26N51W 18 L100#17; 160km valley (later)

R Marius 17.9N49W 18 250km sinuous rille

C Marius 11.9N50.8W 29 41km flooded crater

Marius Hills 12.5N54W 18,29 L100#42; 50km of lava domes
(later - 5-8UTC)
LPO Gallery: http://lpod.org/coppermine/displayimage.php?pos=-80

Mtn Hansteen 12S50W 40 30km mountain massif; aka "The
Arrowhead"
LPOD Gallery: http://lpod.org/coppermine/displayimage.php?pos=-351

C Billy 13.8S50.1W 40 46km dark floor
LPOD Gallery: http://lpod.org/coppermine/displayimage.php?pos=-351

C Mersenius 21.5S49.24W 51 L100#44; 84km flooded crater
with chain of craterlets
http://lpod.org/coppermine/displayimage.php?pos=-390

R de Gasparis 25.3S50W 51 L100#91 (later); 130km rille
system
LPOD Gallery: http://lpod.org/coppermine/displayimage.php?pos=-21

C Segner 58.9S48.3W 71 67km degraded crater with
undulating floor

C Bettinus 63.4S44.8W 71 71km

C Kircher 67.1S45.3W 71 73km flooded crater

- Canopus56

P.S. - For determining when nearby objects might appear out terminator
darkness: The speed of the lunar terminator at the equator is approx.
15.4 km per hour; at 30N it is approx. 13.4km per hour; at 50N, approx.
9.9km per hour.

canopus56 wrote:
The terminator will be at 50.4W lunar longitude at 4/10/2006 3:00 UTC
(4/9/2006 9:00PM). Some targets with Rukl Atlas and LPOD x-refs are


Hi:

Gassendi was also very well placed last night (4/9), with an incredible
amount of detail visible on the crater floor in my little 5 inch MCT
(ETX125).

Peace,
Rod Mollise
Author of _Choosing and Using a Schmidt Cassegrain Telescope_
http://skywatch.brainiac.com/astroland/index.htm

Like SCTs and MCTs?
Check-out sct-user, the mailing list for CAT fanciers:
http://groups.yahoo.com/group/sct-user

See: http://journals.aol.com/rmollise/UncleRodsAstroBlog/
For Uncle Rod's Astro Blog.

RMOLLISE wrote:
Gassendi was also very well placed last night (4/9), with an incredible
amount of detail visible on the crater floor in my little 5 inch MCT
(ETX125).

Yeh, Gassendi was. The factured rille system in Gassendi is pretty
complex. I had a few minutes with it before some high clouds rolled
in. The Marius Hills also looked good in low angle sunlight coming out
of the terminator.

I have been experimenting with improving my lunar observing planner. I
could use some advice on the best way to report potential target lists.
I've been working off the current terminator location with the idea
that objects would roll into view over a couple of hours.

But my sense is that the most useful lists for star parties would be
1-5 degrees on the Sun-ward side of the terminator.

Do you have any recommendations for a number of degrees on the Sun-ward
side of the terminator (I guess a Sun angle) that would on average give
the best views for amateurs?

- Canopus56

My friend is considering a co-workers 8" Sky Watcher dob. We were looking
through it last night and saw some nice detail in Gassendi as well. The
rilles and craterlets were pretty impressive.

Dan


"RMOLLISE" wrote in message
oups.com...

canopus56 wrote:
The terminator will be at 50.4W lunar longitude at 4/10/2006 3:00 UTC
(4/9/2006 9:00PM). Some targets with Rukl Atlas and LPOD x-refs are


Hi:

Gassendi was also very well placed last night (4/9), with an incredible
amount of detail visible on the crater floor in my little 5 inch MCT
(ETX125).

Peace,
Rod Mollise
Author of _Choosing and Using a Schmidt Cassegrain Telescope_
http://skywatch.brainiac.com/astroland/index.htm

Like SCTs and MCTs?
Check-out sct-user, the mailing list for CAT fanciers:
http://groups.yahoo.com/group/sct-user

See: http://journals.aol.com/rmollise/UncleRodsAstroBlog/
For Uncle Rod's Astro Blog.

Now that you are talking about the terminator or the orbital
orientation of the Earth at 90 degrees to the Sun/Earth line,let me
give you an astronomical education on how that orbital orientation
changes rather than the embarrassing notions of a variable tilting
Earth which you adhere to.This is an important lesson so pay attension.

http://www.daviddarling.info/encyclopedia/U/Uranus.html

The axial orientation of Uranus is important insofar as it provides the
best means to appreceate the Earth's changing orbital orientation.As
the Earth moves along in its orbit,its orbital orientation changes in
accordance with Keplerian motion insofar as the rate change of the
terminator (where the arrow are pointing) follows Keplerian orbital
geometry. -

http://www.mhhe.com/physsci/astronom...ages/04f15.jpg

The axial orientation of Uranus is a wonderful way to appreceate that a
planet's shifting orbital orientation yet the sidereal format takes no
account of that change in its vacuous attempt to introduce the
celestial sphere as a reference for axial and orbital motion. -

http://www.pfm.howard.edu/astronomy/...S/AACHCIR0.JPG

For theorists and astrophotographers,the Earth always keeps the same
side to the Sun in order to keep the Ra/Dec system and hemispherical
variable axial tilt.You see things in phases rather than planetary
orientation to the Sun and in this day and age,this is little more than
an astronomical form of creationism.