Question about Meade 8" LX90 LNT Schmidt Cassegrain Telescope with SmartFinder w/ FREE UPS

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LX90 8" LNT Polar alignment

I live in apartment with the balcony facing west and I can not see the True North from my location. So when I do the polar alignment I can not get it right. I was thinking that perhaps I going to need a GPS.
Has anybody got any ideas that may help me?

Regards

Alberto

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The only reason you would want to polar align is to do astro-photography which will be difficult from your location.

Use the scope in normal ALT AZ configuration. Calibrate motors, Train Drives, make sure time, date, site, are set correctly. The Calibrate sensors function sets the magnetic deviation for your SITE. Not really that important because when you center two alignment stars everything is corrected anyway.

So take the wedge off the tripod --- you can still do short duration astro-photography usually not exceeding 12 second exposures and then STACK the images using software.

Posted on Jun 28, 2009

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Manual for TwinStar 1000mm focal length telescope and equatorial mount


Equatorial mounts need to be polar aligned to work correctly. Once the scope is polar aligned (see manual or look online for polar alignment instructions), turn on the RA motor. Loosen your RA and DEC locks and find a object you want to view, The motor should keep the object in view for a while (depends on how good the motor tracks and how good your polar alignment is.) Spending 10 minutes polar alignment on my C8 keeps the object in view for about an hour without adjustment.

Dec 16, 2011 | Celestron Optics

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

Where do polar bears live


Polar bears live around the coastal regions of the Arctic, not actually at the North Pole.

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A bear walks south for one kilometer, then it walks west for one kilometer, then it walks north for one kilometer and ends up at the same point from which it started. What color was the bear?


WhiteThough I think the riddle requires him to walk 1 km south, west, and then north, and wind up in the same place. The only place you can do that is if you start off at the north pole. Therefore the bear is a polar bear, which is white.

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1 Answer

I am struggling to set the telescope us as the


Is it like THIS telescope?
http://www.opticsplanet.net/konus-knonusmotor-130-telescope-1786.html

The focuser mechanism is at the FRONT end of the telescope. The Mirror is in the back-end or bottom of the telescope. This scope is on an equitorial mount, which means it must be POLAR ALIGNED in order to work. You can get a rough polar alignment by using the star Polaris (the North star).

We never recommend an EQ mount to beginners. Polar alignment introduces an additional beginner frustration with using the telescope. Read these web sites to get an idea of polar aligning a telescope.

Their are TWO knobs on the telescope that control Right Ascention and Declination movement. Declination IS your latitude, so the angle must be set to where you live. I am at latitude 32 degrees N --- so the angle is 32 degrees, which is where Polaris is above the horizon.

Read these:
http://www.tucsonastronomy.org/observing-resources/Polar%20Alignment.pdf

http://www.astronomy.net/articles/4/polaralign.html

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1 Answer

Were dose polar bears lives


The polar bear is found throughout the Arctic Circle and adjacent land masses . Due to the absence of human development in its remote habitat, it retains more of its original range than any other extant carnivore. While they are rare north of 88°, there is evidence that they range all the way across the Arctic, and as far south as James Bay in Canada.

Source:Wikipedia

http://en.wikipedia.org/wiki/Polar_bear

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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.

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Bushnell Telescope model 78-9003


You have an equatorial mount-- you must first align it with Polaris the North star....

here are several links that explain polar alignment

http://www.stargazing.net/Astroman/Alignme.html

http://www.astropix.com/HTML/I_ASTROP/TRACKED/POLAR.HTM

Feb 01, 2009 | Bushnell Deep Space 78-9003 (525 x 76mm)...

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Hi cobbie,

It is a good idea to get a watch repair guy to change it for you. They have the tools and experience to do a good job and they seldom charge more than $15-20 to do it for you. The watch casing generally needs to be cleaned, and often the gasket replaced to maintain water tightness.

If you live in the US, you can get a mail order service done here on the watch for $19 that also includes watertight testing, and the job done by experts that do them everyday. If you are outside the US, get back to me and I will find someone close to you.

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Also had the problem. I found that the LNT did not find north unless the bottom of the Smartfinder is close to parallel with the ground.

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