Question about Celestron NexStar 8i (600 x 203mm) Telescope

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2-star alignment I use a celestron 8i. I have updated motor control and a new hand control When I attemp planet, 1-star, 2-star alignment, the program tells me alignment is successful, but the alignment does not hold. When I immediately enter the name of one of the aligned stars, the telescope slews to a point different than the alignment star. Suggestions?

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I also have an 8i, but decided not to upgrade the controls yet. I've had my scope for about four years. I have experienced the same problem and am not sure what what causes it. Some nights, the scope tracks alignment all night, other times it does not. When the later occurs, the only thing that helps is to repeat the alignment picking new targets. One night, I had to repeat alignment 3-4 times. Also, I highly recommend a book by Michael Swanson, "The Nexstar User's Guide". It's an easy read, very specific and keeps the novice in mind. It should be included with every Nexstar sold. Go online to: http://www.Nexstarsite.com. Hope this helps. John

Posted on Nov 21, 2008

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2 Answers

Celestron skyprodigy 70


Sky Prodigy does not have you align on stars but self aligns on images from the mount's camera (much like satellites do to orient), so ignore any incorrect suggestions about picking alignment stars, centering them, moving axes, entering correct dates or info. You should just turn it on and it figures everything out in 10 or so minutes alone.

Thiscode is likely a hand controller failure and you need to call Celestron. Mine did this too. good luck, you will need it...

May 30, 2012 | Celestron Skyprodigy 70 28x165 Telescope

1 Answer

Celestron NexStar 8SE shows No Response 16 and No Response 17 errors repeatedly.


Reset the hand controller and reload the firmware. You will need a special cable available from Celestron to load the firmware. The software is available for free on the Celestron web site.

http://www.celestron.com/c3/home.php



www.telescopeman.org
www.telescopeman.info
www.telescopeman.us

Aug 01, 2011 | Celestron NexStar 8i (600 x 203mm)...

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The hand control isn't working properly. Haven't used the telescope for 12 months. I have replaced the batteries. When I try to align to a star or other object, the direction buttons only work in one...


First thing to do is to buy a new hand controller cable from Meade, If this does not correct the problem then either the hand controller is defective, or something is broken inside the scope.

Cables are not expensive, call Celestron:

http://www.celestron.com/c3/page.php?PageID=37

Jan 23, 2011 | Celestron NexStar 130SLT (31145) (306 x...

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I have a bushnell Northstar telescope #788831am. Is there a place i can update the are i am looking from. It knows las vegas nv and does not pull up reno nv. I need help.


I don't believe they have an "update" web site. However they do have a customer service web site here:
http://www.opticsplanet.net/bushnell-warranty.html

According to the manual PAGE 14 choose the closest city.

See this: http://www.bushnell.com/manuals/telescopes/78-8831_Northstar_GOTORV_4L.pdf


Apparently once you center the two alignment stars it does not matter. The closest city gets you near the alignment stars if Time, Date, etc etc are set properly.

There does appear to be a latitude longitude selection in the menu-- see the manual above. See if you can also set the exact Lat-Long in the hand controller.

Jun 02, 2010 | Celestron NexStar 8i (600 x 203mm)...

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Entered three stars to for alignment. Display shows 1. Mintaka,


Just by selecting a new star. It will ask you if you want to replace a previous alignment star. You need to re-read the manual for the Celestron hand-controller.

This web site will also help you:

http://www.nexstarsite.com/

May 22, 2010 | Celestron NexStar 4 SE Telescope

1 Answer

I have the Nexstar 8. It will not auto align or manual....


First do a RESET on the hand controller and make sure TIME, DATE, and SITE, are correct.

If this does not work then RE-load the firmware in the hand controller. If that fails contact Celestron customer service.

http://www.celestron.com/c3/page.php?PageID=37

May 15, 2010 | Celestron NexStar 102 SLT 102 mm (4.0)...

1 Answer

Sirs: I'm the party with the "Rate Control" issue I have a new NexStar 8se.


The Rate Control only works for moving the telescope using the arrow keys. It does NOT work while doing an alignment, and GOTOs always slew at the max rate of 9.

For any other issues I would suggest you first RESET the hand controller and see if this corrects the problem and if NOT then reload the latest hand controller and or motor controller firmware, using the Celestron update cable and a computer.

Jan 26, 2010 | Celestron Telescopes

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Set up


The finder scope may not be aligned properly with the mn telescope. In the daytime, try setting the main scope on a distant object such as a steeple or chimney in the distance then align the finder scope to point to the same object. Then at night, look at the some bright star or planet and fine-tune the finder scope's adjustment screws so the images are aligned between the two scopes.

Jan 24, 2009 | Celestron NexStar 8i (600 x 203mm)...

1 Answer

The telescope doesnt go up it goes down


I assume you are using the 497 hand controller? Planets will always be a little bit OFF since their orbits are calculated. You should be able to see Venus, Jupiter, and Saturn as a disk-- the other planets are very tiny and can be mistaken for a star.

Use the Automatic alignment feature and center the brightest nearest star. It will not be in the eyepiece. Be sure you calibrate motors, and train the drives, and the time, and date and site are accurate.

Dec 27, 2008 | Meade ETX-80AT-TC Telescope

1 Answer

GoTo Problem


Be sure that the telescope is configured for EQ SOUTH mode to tell it is in the southern hemisphere. Once a star alignment is completed NEVER manually move the telescope. Use only the control panel to slew. Everytime the telescope is move by hand, the motors do not know it has been done, and assume it is still pointing at the old direction. Check the manual for setup.
Here: http://www.celestron.com/c3/images/files/downloads/NexStar_SLT_manual.pdf

Apr 06, 2008 | Celestron NexStar 130 SLT (306 x 130mm)...

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