Question about Meade 114EQDH4 (36 x 114mm) Telescope

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Need a part - can't find it

Need a part to the polar axis. Where can I find it?

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Where is the declination clutch located?


RA moves the polar axis--- and DEC moves the scope from side to side.

There are two knobs that turn these two axis.

See this:
http://www.themcdonalds.net/richard/index.php?title=Polar_Alignment_of_your_Equatorial_Mount

Dec 30, 2010 | Celestron AstroMaster 114 AZ (50 x 114mm)...

Tip

You Just Bought an EQUATORIAL Telescope Mount!


Even though we warned you not to do this, you bought one anyway! Beginners should never buy an EQ telescope mount as their first telescope. It's too late now; so I guess we will need to teach you how to use it!

Equatorial mounts move in a way that seems not to very intuitive. Unlike the easy Alt AZ mount which moves up and down and left and right, the EQ mounted telescope seems to move in TWO dissimilar directions at the same time.

Additionally you must first polar align the mount on the North star Polaris before you can use it. SEE! we told you not to buy it!

Here are the steps to roughly polar align the telescope so you can use it. If it is motorized the single Right Ascension motor will keep the sky object inside the eyepiece for long periods of time. If you do not have a Right Ascension motor, the slow motion RA knob can be slowly turned to keep the sky object centered in the eyepiece.

Begin by leveling the mount and tripod. Move the entire mount and tripod so it is pointing roughly to North, as close as possible using the steps below or a compass. Don't forget to adjust for your magnetic deviation. My location's compass reading is about 5 degrees away from true North. This is called magnetic deviation. You can find your location's deviation on the internet. Then proceed with the steps below.

First, adjust the Declination to the latitude for your observing site. Declination is the angle that the scope is pointing UP, and it's the same as your latitude. For example Dallas, Texas is about 32 degrees North latitude, adjust the scope so the small indicator reads 32 degrees. By the way, the North star in Dallas, TX is about 32 degrees above the horizon. Your latitude matches the elevation of Polaris (the North star) above the horizon.

Second, either look through the polar alignment scope buried in the axis of the telescope mount, or look along side the axis, and get the star Polaris lined up in the cross-hair of the polar alignment scope, or as best you can by looking along the side of the mount axis, or lining it up using your compass.. This will put the scope to within about 3/4 of 1 degree of the TRUE North celestial sphere. This is good enough for VISUAL observation, but NOT good enough to do astro-photography..

Adjust the DECLINATION up or down, and move the entire mount left or right until you can see Polaris as indicated above, or it is lined up as close as possible.

Now you are roughly polar aligned. Now you can move the tube around by loosening the Right Ascension lock, and or the Declination lock until your sky object appears in the small finder scope mounted on top of the main telescope tube.(DO NOT MOVE THE MOUNT, and the counter weight should never be higher than the telescope tube) Lock down the scope in both axis and use the fine adjustment RA and DEC knobs to center the target. Again, DO NOT move the mount or tripod. The mount should still be pointing at Polaris.

This web site illustrates this procedure:
http://www.astronomy.net/articles/4/polaralign.html

also this web site

http://www.telescopes.com/telescopes/polaralignmentarticle.cfm

You should be able to keep an object within the field of view of the eyepiece by slowing turning the Right Ascension slow motion control knob-------- IF you are actually accurately polar aligned. Small adjustments may also be needed with the DEC slow motion knob since you are not exactly polar aligned using this rough alignment technique.

However it can be used successfully for visual observation. Your scope will now track the motion of the stars as they move across the sky.

Hope that helps you!

Clear Skies!
TelescopeMan

www.telescopeman.tumblr.com

on Dec 29, 2009 | Optics

1 Answer

Converting between Forms When working with phasors it is often necessary to convert between rectangular and polar form. To convert from rectangular form to polar form: M = sqrt{A^2 + B^2} f =...


You can switch the display mode for complex numbers by pressing SHIFT MODE down 3 and picking one. This will display the current result in the selected mode.

You can also override the current display mode and specify the format. Add these keystrokes at the end of a calculation: SHIFT 2 then 3 for polar or 4 for rectangular.

Nov 24, 2010 | Casio FX-115ES Scientific Calculator

2 Answers

Polar alignment with cg5 mount in the tropics


Wait what? You just have to remove the front bracket for the alt screw and you can go lower than 30 degrees.

Feb 21, 2010 | Celestron CG-5 Mount Telescope

1 Answer

I don't know how to use the motor and the image is upside down


All astronomical telescopes have upside down images. No up more down in space, and MORE glass is needed to erect the image which decreases the light.

If your scope is like the one in the picture it is an equatorial mount which must be polar aligned to work. Once the scope is roughly polar aligned the motor will keep the object in the eyepiece for a long period of time. It moves the RA axis in time with the movement of the stars across the sky.

Read this:
http://www.themcdonalds.net/richard/index.php?title=Polar_Alignment_of_your_Equatorial_Mount

Dec 26, 2009 | Konusmotor 500 (230 x 114mm) Telescope

1 Answer

I need to program my police scanner but dont have the codes will u plz find them for me thank you


If you had a Radio Shack or electronic place they can probably program it otherwise it depends on your location,I have the code for Saluda County, Newberry County in South Carolina

Oct 12, 2009 | Celestron Polar Axis Finderscope for CG-4...

2 Answers

HOW DO I USE THE TELESCOPE


Hi,

he first thing you will need to know is does your telescope have a polar axis or not, that is, is it intended to track, or is it merely a point and look, or what we call Alt-Az. Alt means altitude and Az means azimuth, where Alt is the distance above the horizon, and Az is the direction in a circle around the horizon. If you have an Alt-Az mount, just skip the polar alignment step. If you have a polar axis, that is, your telescope is intended to track the stars, then find north, and make sure the polar axis is approximately lined up in that direction. It does not have to be too accurate, but make sure it is pointing pretty close to north. If you are not sure where north is, either use a magnetic compass, or try to find Polaris, the North Star.

Thanks.

Jul 02, 2009 | Meade Infinity 114EQ-DH Telescope

1 Answer

Can't transform from polar to rectangular


Hello,
The e is the same, it is the exponential. According to Euler's relation
e^(i theta) = cos(theta) + i sin(theta), where i is the imaginary unit.
When represented on the complex plane (x,iy) the point (cos(theta), sin(theta)) is at the extremity of a vector of length 1 and making an angle theta with the real axis.

In (plane) polar coordinates, a point is defined by the radius r, and the angle, theta, it makes with the x axis, measured in the trigonometric (counterclockwise) direction. It is structurally equaivalent to representing it in the complex plane as r*e^(i*theta). Since r is the measure ot is radius, and the theta is it argument (angle). The complex notation is used for its convenience when adding vectors (as is AC circuits)
That is the theory.
I am inserting a clipping from the book to show you how to convert between polar and rectangular coordinates.

d2af7da.jpg

Oct 10, 2008 | Casio FX1.0 Plus Calculator

2 Answers

There Is No Power For The Axis 9


that sounds bad. You will need to get someone to have a look at the decks for you. The fact that both blew sounds like they got a major power surge or are on the wrong mains voltage. check to see that they are setup for operation in your country. Check your mixer for damage also.


Some suppliers of electricity are bound by regulations to keep supply within 5%. When you have a spike that "blows" stuff, they generally know about it and there may be some recourse with the electricity provider. Worth checking out.

Jan 29, 2008 | Nu Mark AXIS 9

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