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2 star alignment - iOptron Smartstar-a 8600r Gps Computerized Dual Altaz/eq Mount

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I have a celestron Cosmos 90 GT Wifi telescope and so far haven't been able to use it. I struggle with aligning the telescope to 3 bright stars... if by chance it says its aligned when I choose a star


Aligning a scope requires several things to be correct.
1. You must follow the setup in manual 100%
2. You must pick the correct alignment stars. Most failed alignments are because you aligned on the wrong star. So alignment requires you to learn the names of a few bright stars and be able to spot them in the sky.
3. With many goto scopes there might be a "home position" to start the alignment. For example, tube pointed roughly North, and level. Check your manual for a "home position. Also time, date, and site must be correct.

Clear skies,
TelescopeMan
www.telescopeman.org and www.telescopeman.info

Feb 16, 2015 | Celestron COSMOS 90GT Wi-Fi Refractor...

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What am I doing wrong with my star alignment process? Please help.


I don't know your scope in detail, but if you can read this you should be able to go to the user manual here
http://www.bushnell.com/manuals/telescopes/NorthStar788840_788850_788890_788831_788846_2010Revised5LIM_web.pdf?CFID=36472283&CFTOKEN=de4b165f584ad635-AF7E3AEE-A567-68CB-F21AC262CDAFA920&

There are a few things common to these goto hand controls.
- you must enter the time and date accurately, and be correct about daylight saving settings, and observe the date format
- you most likely will have to go through time and date setting steps each time, but the control will probably remember one of these at least. You will see what it has already set when you come to that step next time around.
- the mount should be leveled as far as possible, or pointing errors will appear when the scope slews around.
It could be that the scope has no idea at all where the align star is, when using Earth Align. You are teaching it that, but if the rough location it tries to reach is way way off, it seems you need a second star and Align Star mode. Often with these devices you need one star from either side of the meridian.
You could also start again with a different city, but one in the opposite direction to the first. I would try cities all around the compass to see if one gives a better result.

Apr 08, 2012 | Bushnell NorthStar 78-8846 (675 x 114mm)...

1 Answer

Meade LX200GPS The scope does not complete the 'Auto Alignment'


Once the scope has taken a GPS fix and knows TIME, and SITE, and you do a two star alignment your alignment stars overide any automatic alignment issues.

You could turn off the GPS put in Time, Date, and Site, do a two star alignment and everything would be fine. Centering the alignment stars is the "trick". Apparently the scope also finds NORTH OK, or the alignment stars would be way off. Since you pre-level the tripod already the software can FAIL on "tilt" and you still get good gotos.

I would not worry about it, especially since your gotos seem perfectly fine.

May 28, 2010 | Meade LX200GPS Telescope

1 Answer

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

Fist time alignment issues.


Did you calibrate the motors and TRAIN the drives? If not do these first--

During alignment the "alignment" stars may or may NOT be visible in the eyepiece-- CENTER the star. Once you do this with two stars your gotos should be good.


Mar 11, 2009 | Meade Optics

1 Answer

Start Align with NexStar 4SE


Did you enter the correct TIME, DATE, and LOCATION? and yes you may have aligned on to the wrong stars -- they need to be "near" the center.

Feb 04, 2009 | Celestron NexStar 4 SE Telescope

1 Answer

Auto Align??? DS-2114ATS-TC


The alignment stars will be nearby BUT MAY NOT BE in the eyepiece-- you must center the alignment stars using the hand controller-- after you center the second star the GOTOs should be OK.

Dec 28, 2008 | Meade DS-2114 ATS (325 x 114mm) Telescope

1 Answer

2-star alignment


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

Sep 08, 2008 | Celestron NexStar 8i (600 x 203mm)...

1 Answer

GPS not working


Nope! Sounds normal. The GPS is used as the surface point and time refrence, but it still needs the star fixes to orient the axis. 2 star alignment is generally for Alt-Az mounting, while you can use 1 star for rapid setup on a permanent equatorial mount.

Jun 12, 2008 | Celestron NexStar 11 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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