Last updated: 30 April 2007

This page is for user comments and information of a general nature or items applicable to all ETX, DSX, and DS models. Comments on accessories and feedback items appropriate to other ETX and DS models are posted on other pages. If you have any comments, suggestions, questions or answers to questions posed here, e-mail them to me and I'll post them. Please use an appropriate Subject Line on your message. Thanks.

Subject:	ETX and GPS
Sent:	Monday, April 30, 2007 19:42:39
From: (
What a great site you have created, my hats off to you..

I have a etx105 with a autostar 497 and the Rikaline 6010. Now I want to
connect up the laptop and I see that both the gps and the laptop wants
to be plugged in to the connector on the bottom of the autostar
controller and not on the AUX port on the ETX... Is there a solution out
there that will let me have both connected at the same time.

Mike here: Doubtful since the single serial port would need to be used by two pieces of hardware. Of course, you really only use the GPS/AutoStar combination during initial alignment and once that is done you could connect the laptop.
Subject:	Re: Meade ETX125 focusing backlash
Sent:	Monday, April 30, 2007 14:50:01
Wasn't the Flexi-Focus after all. The shaft had always been tight. Held a 
papercloth behind the shaft, rotated the shaft as far out as it would go
and did a one second squirt of WD-40. Wiped the shaft off and wala, the
focus backlash was gone!

Go figure :)

Thanks for your kindness and support from a true "Amateur" astronomer


Subject:	Reverse polarity
Sent:	Saturday, April 28, 2007 20:11:25
From:	Roger Lange (
It's been a while. I inadvertantly plugged my ETX-125 into a 12v
external power source with the polarity reversed. It doesn't work now.
Did I kill it or will I find a fuse if I open it up? Didn't know where
to look on the site for help.
Thank you in advance.
Roger Lange
Mike here: If you reversed the polarity you likely blew a component on the circuit board. Unless you are comfortable with circuit board work, probably time to contact Meade (or try to locate a replacement board).


I was afraid of that. One additional question. Do you know if the
circuit boards from the 125-EC and the 90-EC are the same? The input
face looks identical and they both use the same hand controller and
Autostar. I have a couple of 90-ECs that I rarely use and thought I
might have a solution there.
Thank you again,
Mike here: You could probably mount an ETX-90 board, with some extra effort. But how well it would work I don't know.


I submitted a parts request for the board to Meade and the question
about ETX-90 vs ETX-125 board. I'll let you know their reply.

Subject:	Chinese Made ETX
Sent:	Saturday, April 28, 2007 11:01:19
From:	Marc Blodgett (
I have been a fan of yours for many years.  I own an older ETX 90 (blue
tube), an ETX 125 (also blue tube with UTHC coatings, etc.), and a LX10
8-inch SCT.  I have found both your website and book very informative
and helpful.  I had an opportunity to visit the Meade factory last
weekend and found it very informative.  The Meade representative
indicated that all of the ETX models are now manufactured in China.  The
previous ETXs tube and optics were American-made.  I also asked if Meade
would follow the trend of outsourcing their smaller SCTs  similar to
what Celestron, Orion, and others have done.  His answer seemed
non-committal.  While I am impressed with the affordability of the
telescopes coming out of China, my smaller ETX outperformed high quality
refractors I owned including a Williams Optics Megrez II and Televu
Ranger (both were high quality achromats).  When discounting the
secondary obstruction, the primary aperture was similar.  I sold the two
refractors and purchased the 125.  My question you see a
difference in quality between the earlier ETXs and the newer ones coming
out of Meade?   (I also must admit that I hate the laminated pictures on
the ETX tube.    

Thanks again and clear skies.
Marc Blodgett
Mike here: My last "new" ETX was an ETX-105PE which I received in March 2005. I haven't had any extensive opportunity to work with any more recent models so can't comment on any change, good or bad, in quality.
Subject:	Meade USB to RS 232 Adapter for use with EXT 125AT, DSI, and Auto star, for Laptop computer control
Sent:	Friday, April 27, 2007 14:14:51
From: (
This morning  I was looking at the back of my laptop computer to see
where I could connect the RS 232 connector from my EXT125AT Autostar
Hand box to my computer's comm port to use Autostar suite software to
control my telescope (with # 505 interface cable package from Meade).
Much to my surprise I found that my new Laptop does not have a (B) 9-pin
connector, or serial port to make this connection.My laptop has only USB
inputs that could be used to access comm with the computer (enter a
brief moment of panic here! Yikes!!).

After regaining my composure and a quick search of the Meade web site I
located what I hope is a fix for this problem in the form of Meade's
"USB/RS232 Bridge Adapter w/ software". The Meade USB to RS232 Adapter
Software driver "creates a virtual comm port on your PC and treats the
virtual port as a normal PC serial port" so that you can use a USB port
to connect the Autostar Hand Box, w/Autostar suite, to your laptop and
use the computer to control the EXT Telescope.

My question for you is, have you ever heard of this Meade USB/RS232
Bridge Adapter & software, does it work, and do you have any more
information regarding this issue? I have been reading quite a lot of
information about the EXT (and DSI CCD camera - I know you don't use the
DSI your self) on your and other web sites but until today I had not
heard of this problem or this USB/RS232 adapter. When I called Meade
today they gave me a dealer name from which I could order the adapter
but it seems that it is back ordered until the end of May (I called some
other dealers and they are out too). This adapter and software is only
made by Meade for use with Autostar suite so I guess there has been a
big demand for it. Also, newer laptops are using USB connections for
just about everything now (cameras,printers,poratble file storage ect.)
so unless you order a new laptop specifically with a (B) 9-pin comm port
connection you will need to use this adapter.

Any additional information you (or your readers) could give me regarding
this issue would be much appreciated.

Best regards and Clear Skies - Kent Bouchard
Mike here: Yes, you need a USB-serial adapter. The Meade one will work (on most Windows based computers). Alternatively you can get a third party one such as Belkin or Keyspan. However, not all adapters will work with the AutoStar so see the article "AutoStar and USB" on the Helpful Information: AutoStar Info page. I use a Keyspan Twin Serial adapter on my Apple PowerBook (running Mac OS X) and it works OK.


Thank you for the reply. Just by luck I was able to get a MEADE USB to
RS232 from a vendor at an Astronomy show at Rockland County Comm.
College in NY State this week end. I hope to try it out soon. -Kent

Subject:	Re: Alt movement when Az slewing
Sent:	Thursday, April 26, 2007 12:41:33
From:	Alex Lam (
Where is this "axis lock" you are referring to?
Is that something I can fix myself, or do I need send it back?

Mike here: I was referring to locking the axis with the external lock controls. Just be certain to not overtighten. Nor should either one be too loose.
Subject:	Re: ETX repair
Sent:	Thursday, April 26, 2007 04:01:45
From:	P. Clay Sherrod (
The black collar is indeed very keeps the transfer gear
box aligned precisely with the worm assembly; if it is broken, the next
thing is for one of the many transfer gears to break a tooth or to
become disengaged from one-another.  One of those two scenarios is what
has happened in your telescope.  You will not be able to access nor
replace the gear yourself....and the black collar needs to be replaced
as well. This is all ONE assembly as supplied to Meade and they replace
and install a complete unit (motor, transfer gears, worm, encoder
assembly) when any part of that unit is damaged.

It is possible that Meade may supply this assembly to you if you will
tell them that the collar has snapped....they DID have a problem with a
defective part in some production periods.

Best of luck!!

Dr. Clay
Arkansas Sky Observatories
Harvard MPC/ H43 (Conway)
Harvard MPC/ H41 (Petit Jean Mountain)
Harvard MPC/ H45 (Petit Jean Mtn. South)

Subject:	ETX90 Dec scale adjustment
Sent:	Wednesday, April 25, 2007 21:59:26
From:	Eric West (
You kindly answered my question about an out of adjustment DEC scale on
my ETX 90 EC, by referring me to the FAQ page.

It tells me that I should loosen the knob and readjust the scale.

The knob is very smooth, so you can't really get a grip on it and it
seems very tight. I don't want to apply any level of force to it. Is
there a trick to it or does one have to give it a little "persuasion"

Eric West
Mike here: Use a rubber jar lid opener or a rubber glove.
Subject:	re: #1247 electric focuser and ETX 125 pe
Sent:	Wednesday, April 25, 2007 21:57:53
From:	richard seymour (
> "Getting time..."

When the Autostar is starting up, it sends messages
out on the AUX bus to see what's there.

Focusers reply to one message (and the Autostar will
offer the Focus menu if you tap the [zero] key),
and the LNT modules reply to another (and the Autostar
then asks for the time and date).

The fact that the focuser starts to run when the Autostar
is trying to get the time from the LNT module does
speak of something being mildly wrong with the
focuser electronics, or at least with its ability
to clearly understand the AUX messages.

The confusion -could- be caused by intermittent connections
in the scope base, or even difficult-to-isolate short
circuits (or noise production) on either of the motor cards.

The random (and long) time intervals between failures make
diagnosis difficult.  I'd be tempted to run without the
1247 focuser for up to a year.. if the Autostar and scope
survived without failure, then plug them in and see how
it goes (this may have the problem of moving to issue
to an "out of warranty" time frame).
The alternate approach is to continue as you have,
with everything connected.  If it starts dying -again-,
then DO include the focuser on its next trip to Meade.

good luck

Subject:	ETX repair
Sent:	Wednesday, April 25, 2007 04:28:40
From:	shaer ilan (
I was hoping you might be able to help me out.

For a while we had put our ETX aside after enjoying it, and now when we
set it up again, while it was sluthing to the left, it suddenly started
to make 'cluck-cluck'ing noises and wouldn't move to the left anymore.

It works well going up and down and to the right. The black plastic that
holds the worm gear cog to the motor's cog snaped, but it doesn't seem
to be the real problem since it runs smoothly to the right. When you try
to move it to the left, the motor tries to work and starts jumping and
clucking, but the cog for the worm gear wouldn't move.

Do you have an idea of what it might be from and if we would be able to
fix it ourselves?

Mike here: Sounds like the gear has come loose from the mounting. You might be able to reattach it but you will need to use caution due to the wiring. You could contact Meade or Dr. Clay Sherrod (for his Supercharge tune-up service; link on the ETX Site Home Page).
Subject:	#1247 electric focuser and ETX 125 pe
Sent:	Tuesday, April 24, 2007 16:35:56
From:	Rolf Sannes (
Meade has replaced my scope after five trips to the factory.  Could the
#1247 focuser be the cause of my electrical problems?  I control it via
the #497 hand box.  Sometimes the hand box would power the focuser
during startup with the display showing "getting time".  I do not want
to risk damaging the replacement scope.
Rolf Sannes
Mike here: Unless the #1247 is defective, then no it should not be causing any electrical failure on the ETX. However, if there is a crossed wire or connector or some other electrical issue with the focuser then it is possible. When you shipped it back did you also send the focuser to Meade to check out the entire system following the repair? However, there are other possible causes of messing up the ETX electrically. The power source (assuming AC or external DC power). The AutoStar cable or the AutoStar itself. Static electricity. Etc.


The focuser has functioned with out any problems and was never sent to
Meade.  I began to worry, when production was stopped.

A Celestron Power Tank is used as the 12v dc source.

With all the repairs and replacements I have had 7 AutoStars. The
longest time one has operated is 9 months; the shortest 1 1/2 months.

Since I live near you at 33.76 deg N and 118.32 deg W, what LPR filter
would you recommend.

Your site is GREAT!

Rolf Sannes
Mike here: Definitely strange. I use the Celestron 7Ah tank. As to an LPR filter, you can read my comments on the Celestron LPR on the Accessory Reviews: Filters page; there are other filters discussed there as well.
Subject:	Airline Travel
Sent:	Monday, April 23, 2007 19:09:44
From:	Al Schepis (
I'm flying away in June and I need some suggestions on the best way to
take my EXT 125 PE..

I'm not comfortable checking it, even in Meade's hard case. I was
wondering if bubble wrapping it and taking it on board in a backpack
will work.

Has anyone have any experience with airline travel?

Mike here: You can read my report "Mighty ETX Visits Australia" on the Just for Fun! page. You can also search the Site for "airline" and you will get lots of hits.
Subject:	Fwd: Re: Replacing the ETX  RA Mechanical stop 
Sent:	Monday, April 23, 2007 17:54:20
From:	Al Mlinar (
Has anyone responded to my problem?

The manual for the ETX105EC, states that the stops are installed to
prevent the scope from rotating more than 360 degrees. To me, it means
that the stop ring has 2 prongs. I must remove the stop that I added to
be able to rotate 360 degrees. With the stop as is I get about 260

I would like to get the scope together again.

Thank you for putting up with me.

Mike here: Your manual must have a typo; the hard stops prevent the ETX from rotating almost but not quite two full rotations.
Subject:	Meade 825 vs 827
Sent:	Friday, April 20, 2007 13:50:14
From: (
Are they the same except for the bracket that holds the 827 to the
Mike here: Believe so but I don't have a 827 to confirm that.
Subject:	Link Exchange Consideration
Sent:	Friday, April 20, 2007 09:31:36
From:	THOS ASH (
My name is Tom, I am your consideration of exchanging links. My site is
basically on the construction of my roll-off-roof observatory. I also
have some pages on my equipment, equipment reviews, astrophotography,
tips and tricks and downloads. Here is the url to the Ash Observatory
Thank you for your consideration,
Clear Skies
Thomas Ash
Ash Observatory

Subject:	Vendor help
Sent:	Friday, April 20, 2007 08:56:45
From:	brad kirby (
I tried to order something with Scopetronix online over two weeks ago
and have yet to hear a peep from them. I have sent multiple emails
requesting info. and still nothing. I hate to bother you, but was
wondering if you have any sort of contact info. with them. Nobody
answers the number I have (239-945-6763), and nobody answers any of the
emails on their site. Any help would be most appreciated.
Brad K.
Mike here: As frequently noted on the General Feedback pages over the past several months, Scopetronix has been going through a lengthy and apparently difficult change in management. I unfortunately have to recommend that Scopetronix not be used until such time, if ever, that they return to the former excellent service.


I guess I missed that. Thanks for the info. 

Subject:	ETX90-EC vs PE
Sent:	Friday, April 20, 2007 05:51:19
From:	Miklosz, Mark (
I am interested in purchasing my first real telescope. After some
research and time on your site the ETX90 is the one that seems like the
best choice for the money. Some of the comments regarding complexity of
the ETX 90 and reliability have me concerned. With the owner's manual I
can program most VCRs, so the complexity piece scares me less but the
reliability issues have me concerned. Tell me your thoughts and what
your choice would be between the EC series vs the newer PE.
Mike here: Keep in mind that people tend to report problems and not report praise for ANY product. Can there be problems with ANY product? Absolutely. But that does not mean there WILL BE problems. I suspect that the vast majority of users have no problems not of their own making. As to the EC (AT) vs PE model, some users prefer a magnifying finderscope and seem prefer the red-dot style. As to the LNT module with the PE series, whether or not you NEED it will depend on your location and usage plans. If you never observe from multiple locations and if you know (or can learn) where True North is located, then the need for the PE model is less than it might otherwise be.


Thanks for your insight and for putting together an outstanding support web page.
I will go ahead with the purchase.
Mark Miklosz

Subject:	ETX90RA
Sent:	Tuesday, April 17, 2007 06:44:40
From:	Kelvin Obbard (
Just a very quick THANK YOU!
I bought a second-hand ETX90RA (my first telescope - having wanted one
for years) based on the info on your excellent site.

I am utterly delighted with it & am in your debt for the help & advice
that your site offers.

To anyone who is thinking of taking up astronomy, please do take heed of
this valuable resource!

Once again
Kelvin Obbard (London - England)

Subject:	New Astro Website Geheniau
Sent:	Tuesday, April 17, 2007 02:49:01
From:	Job Geheniau (
My old website is going to be removed

Please can you inform on your ETX site that my new website will be:

Thanks in advance,

Regards Job Geheniau, The Netherlands

Subject:	Storing a telescope
Sent:	Monday, April 16, 2007 14:08:29
From:	Jan H Kolst (
I am planing to build a shed in my garden this summer. It is not
insulated,just made of wood.I plan to keep my telescope there throughout
the year. Is that a sensible solution? It will be moisty during autumn
and below cero during winter.Does this actually harm the scope?
Mike here: You might want to read the articles "Cold Weather Performance" and "High Temperature Warning" on the Helpful Information: Observational Guides/References page. They will have some relevance to your situation. Moisture could become a problem if things start to rust.
Subject:	Drifting
Sent:	Monday, April 16, 2007 13:58:33
From:	Jan H Kolst (
I've got a ETX 125 At which I've changed the AZ motor on. When I try to
center a star ,it starts drifting horizontally.What causes this? Any
suggestions? It was ok in the beginning when I had changed the motor.So
this suddenly started.

When I loaded the latest Autostar update I got problem with the added
LNT.By auto alignment the scope levels and moves FINDING NORTH until it
nearly hits hardstop.I stop it before that happens. Easy align works
ok.Time and date is ok.But it doesn't find tilt and the rest of the
procedure.I've tried reloading the lates version of autostar several
times.Hope for an answer and I DO appreciate your informative site.
Jan H Kolstoe
Mike here: "Rubberbanding" (as it is called) is normally cured by doing a TRAIN DRIVES (don't forget to do both axes). I recommend doing a CALIBRATE MOTOR and TRAIN DRIVES after any AutoStar update. But in fact, anything that would affect the motor, gearing, or encoders could benefit from doing both steps. As to the LNT, have you done a CALIBRATE SENSOR?


Well.I've CALIBRATE MOTOR and TRAIN DRIVES in both axes which I always
do after an update,but no luck.I cannot Calibrate Sensors because then I
go through the LNT home position and the scope just slews towards the
hardstop.But it levels and gives the right time and date.Thanks a lot
Mike here: Dirty encoder?


Hi and thanks for responding,
I found some dirt on the encoder so drifting is no problem any more. As
to the extra LNT module which I bought, I am sad to tell you that I had
mounted it the wrong way. Sorry to have bothered you about that.
Everything is now working nicely.


Subject:	problems
Sent:	Sunday, April 15, 2007 14:03:34
I have problems with my telescope the model is telestar by meade DS-60
model and my problems are that the small thing on the side when you look
through it it makes everything look upside down and when you look
through the big one its all blurry PLEASE HELP ME!
Mike here: First, PLEASE read the Email Etiquette item on my ETX Site Home Page; your message was originally DELETED UNREAD as SPAM due to the ambiguous subject line. Thanks for understanding.
Second, it is normal for astronomical telescopes, including a "finderscope" (which is what I assume you mean by "small thing") to invert and/or mirror image objects being viewed. For astronomical objects this is not a problem. As to "big one" you need to rotate the focus knob until the image is in focus.
Subject:	Re: Replacing the ETX  RA Mechanical stop 
Sent:	Saturday, April 14, 2007 08:20:48
From:	Al Mlinar (
This is AL the 92 year old guy.

About the ring stop for the EXT. Does anyone know if the ring stop has 2
or 4 prongs.

When I took the scope apart, the ring stop had only 2 prongs, the other
2 must have been broken off intentionally by Meade. There were no broken
pieces inside.

Richard Seymour's E-mail about rotation, got me thinking that the ring
must have only 2 prongs to be able to get 470 to 490 degrees of

The picture of the ring and stops that I installed only give me about
260 degrees of rotation. That is what a 4 pronged ring stop would give


What good is a telescope that only rotates 260 degrees?

Hope someone can give me some advice before I solder the cut wires and
give up. I think that I will have to remove the stops that I put in.
Al Mlinar
Little Falls, NY

Subject:	MEADE drops support for call in purchases of right tube adapter
Sent:	Thursday, April 12, 2007 17:12:46
From:	Dennis Steinerd (
Not sure if this was made official on the Mighty ETX site but I was
advised today by MEADE Support that they will no longer provide, for
purchase, the ETX right tube adapter to callers who wish to affect the
fix on their own. They will however continue to support the telescope if
it is sent to them for repair. The Support Specialist quoted me a fixed
rate for the right tube replacement at 75.00 not including shipping.
That being said, I ordered the aluminum kit from AstroHut.
Regards, Dennis

Subject:	Meade ETX125 focusing backlash
Sent:	Thursday, April 12, 2007 16:36:47
From:	  (
Could you direct me to a fix for focusing backlash. I have the
flexi-focus on the scope and when I focus an object and let go it slowly
goes out of focus all on it own, causing me to constantly refocus?

Any ideas

Randy B. Maurer
Ephrata, PA 17522
Mike here: I don't recall any similar reports. Lets try a test; replace the cable with the standard focusing knob. Does the problem still occur? If not, I wonder if the weight of the cable is causing the shaft to rotate or move inward/outward. I've not seen that problem with my Scopetronix FlexiFocus.


I'll try that as soon as this Nor-Easter pulls out and I can find the
knob :)

Subject:	GPS addition for ETX
Sent:	Thursday, April 12, 2007 03:27:56
From:	henrik.van.holthoon (
Just as an addition to what Mike wrote to you concerning GPS update for

GPS does 2 things for you; it is providing geographical site coordinates
(lat/lon) and time.

1)Time for a ETX PE is already provided by the LNT module.

2)Left are the site coordinates, if you observing in a lot of different
locations you site coordinates are then provided automatic. However if
you always observing from the same location GPS addition is not so
usefull. You input only ones the coordinates yourself or country/city
etc. and that's is it.
Have fun


Subject:	Re:GPS on the ETX
Sent:	Sunday, April 15, 2007 07:17:32
From: (
A GPS will add accurate time and position, but since the PE series
already provides time (to the level of accuracy you use to initialize it)
the only gain is position. If you frequently move the scope to different
locations, this would be useful, but if you're at the same place most
of the time, you don't really need it. If you already have a GPS, use it
to manually set your LNT clock and position one time and forget it.
If you move to another location in the same time zone, you can
easily add a new location in Autostar, using the GPS to enter position.

If you don't have a GPS, keep in mind that the "add-on" units available
for the scope are pretty much single purpose devices. They have to 
be attached to a scope or computer to use their outputs. As an
alternative, you could buy any one of the commercial handheld units
used by campers, hikers etc. and adapt it to the scope when needed
with cables and software from the folks at StarGPS. That provides
multi-use capability.

Personally, I've had a GPS for many years and a 125ETX PE for a 
couple of years and never found the need to connect the two.

Mike Hogan

Subject:	Resolution: ETX125 total power failure after using new mains power supply
Sent:	Thursday, April 12, 2007 01:20:17
From: (
issue now resolved as follows:

I sent the scope to Telescope House (Kent, UK), who we'd bought  the
Uniross power supply unit from. They fixed the problem at no charge and
sent the scope back to me, total turnaround was nine days. I'd like to
thank then for an excellent piece of customer service.

Engineers comment was: 'Fault traced to dead front panel. No evidence of
misuse or incorrect power supply, possibly faulty reed switch. Front
panel replaced and instrument tested. Uniross power supply also tested
and no fault found. Repair at no charge - goodwill.'

The scope now powers up instantly from the power supply or internal
batteries, so the slow power-ups I'd had were obviously a sign of the
fault before it (the reed switch?) failed completely. Successful
alignment and GOTO on Saturn last night, so the scope hasn't suffered
from transport. I'm once again free to battle the cloud and light-
pollution of Merseyside!

Jon Crowe

Subject:	re: piece for meade etx 90
Sent:	Wednesday, April 11, 2007 20:45:33
From:	richard seymour (
If you are going to return to London, you might call
The Telescope House, who are the authorized Meade telescope
people near London.   +44 01892 550100

Telescope House
   UNIT 12
Spa Industrial Park
Longfield Road
Tunbridge Wells
Kent TN2 3EN

You could also try contacting Meade Europe

Meade Instruments Europe
GmbH & Co. KG
Gutenbergstrae 2
D-46414 Rhede/Westfalen

Telefon: (0 28 72) 80 74-0
Telefax: (0 28 72) 80 74-444

good luck
From:	Alberto de Sapio (
Many thanks

It has been kindest 

Alberto de Sapio

Subject:	ETX 125
Sent:	Wednesday, April 11, 2007 13:16:32
From:	Gerald Jenny (
is there any way to remove the power panel mine is fried I think no
voltage across any pins, or is this something to be sent to Meade 
thanks Jerry
Mike here: Meade hasn't made that replacement part available. You could call them and if it is available, they will send you one OR they will tell you to send the whole scope to them.
Subject:	projection of images on to laptop screen
Sent:	Wednesday, April 11, 2007 11:58:33
From: (
I own a 125pe and wish to project the image from the scope on to a 19
inch laptop screen (real-time) with a view to saving individual images
and printing of same.  Enjoy your break.
Mike here: You can use a webcam or one of the dedicated astro imagers. Alternatively, many digital cameras come with software that will let you display its live image on the computer. However, digital cameras will only typically work with the brighter objects for live viewing. Lastly, there are "electronic eyepieces" that can display on a "TV"; you would just need an analog "in" capability on your computer.
Subject:	GPS on the ETX
Sent:	Wednesday, April 11, 2007 06:40:03
From: (
I was wondering what the advantage would be to put a GPS on the
ETX125PE?  I notice that Meade is going to be offering the "mySKY" 
soon.  It says will add GPS to non-GPS scopes.  I am curious if this is
worth it.
Mike here: See the "StarGPS-LX Review" on the Accessory Reviews: Showcase Products page. As noted on Announcements: Meade page, I will be reviewing the mySKY after I get one.
Subject:	i think you have a good website
Sent:	Monday, April 9, 2007 12:08:28
From:	keith thompson (
your website is great i have an etx 125 of my own.
keith thompson
hopatcong nj

Subject:	piece for meade etx 90
Sent:	Monday, April 9, 2007 09:18:41
From:	Alberto de Sapio (
I call Aberto de Sapio and I make excuses myself for my English.

I have found its site one on Internet.

I would have need of a piece of reciprocation for mine meade etx 90. The
shipment the photo.

The indicated piece is that one from the red arrow.

The piece serves in order to couple the telescope to the Mount.

In case it had the piece or if it knows someone that sells it, make to
know how much coast and how much coast me the shipment in Italy.

From April 10th to 14th I will be in London without pc. I will be able
to read my emails and to write you back from next Saturday.

Many Thanks 

Alberto de Sapio 


Mike here: As I mentioned in response to a similar question from another user on the 8 April General Feedback page, there are some articles on this on the Helpful Information: Telescope Tech Tips page. I don't believe Meade is selling a replacement but Astro Hut has a Right Tube Adapter Replacement available (link on the Astronomy Links page).
Subject:	Slow panning camera mount
Sent:	Sunday, April 8, 2007 05:50:37
From:	Jim Jenner (
I'm a filmmaker interested in using a telescope mount to create
extremely slow pans of outdoor scenes [18 degrees a minute].  It looks
like the computerized heads you use for tracking scopes could work for
this with slight modifications.  My cameras weight from three to seven
pounds.  Can anyone give me advice on what to use, or if they have heard
of an adaptation like this?

Jim Jenner
Mike here: Yes, you could use a DS or ETX mount for this. For the heavier cameras an ETX mount would be better. You would have to write your own software to control the AutoStar #497, which controls the mount movement. There is information on AutoStar Commands on the Helpful Information: AutoStar Info page. Also, the AutoStar is a RS-232 serial device. So if your computer, Mac OS X, Windows, or Linux has only USB, see the article "AutoStar and USB" on the AutoStar Info page for more on using USB with the AutoStar.


Thank you so much for the prompt reply.  I shoot scenic images here in
Montana and this could be a wonderful tool.

Best wishes,  Jim Jenner

Subject:	telescope ETX125
Sent:	Sunday, April 8, 2007 03:22:21
From:	hameed haji (
shortly when iam using the telescope,every time iam swicht the power on
and off iam loosing the time and date.

iam interested on watching the new Crescent Moon Sighting ,pleas advise
the best way to do so.
with regards
Mike here: That is normal behavior of a non-GPS and non-PE model of the AutoStar. As to the Moon, use a low power eyepiece after a GOTO from the AutoStar or binoculars to locate it.
Subject:	Broken Declination Mount Shaft ETX90EC
Sent:	Friday, April 6, 2007 16:35:56
From:	Dennis Steinerd (
I aquired a clean 90EC but it was 'limp' in the box. I found the
declination lock, of course, didn't work and by removing the tube from
the mount found that the plastic shaft had sheared off right at the
brass gear. Is there a parts number reference somewhere with a blowup
diagram and some simple instructions on how to replace this obviously
notorious piece. I am new to your site and very impressed. Thanx, Dennis
Steinerd, Dumont, NJ.
Mike here: There are some articles on this on the Helpful Information: Telescope Tech Tips page. I don't believe Meade is selling a replacement but Astro Hut has a Right Tube Adapter Replacement available (link on the Astronomy Links page).


If Meade doesn't offer the kit, there are a lot of limp ETX's out there.
That's not good news. I was about to call them tomorrow. Not a good
posture on such a wide ranging problem. The one offered by Astro is
89.00 bucks. Pricey but if I may have to eat it. Your site is wonderful.

Subject:	ETX 105 EC eyepiece set screw
Sent:	Thursday, April 5, 2007 00:01:03
From:	thebostons (
Sorry. I've looked everywhere (on your site and others) to find the
exact size of the thumb screw that secures the eyepieces in the eyepiece
holder on the ETX 105 EC, all to no avail. Please, if you have it, tell
me the exact diameter/thread information I need to purchase the proper
size screw. Your help will be sincerely appreciated.
Mike here: Hum, "everywhere"? Including the FAQ page? ("Q. What is the size of the eyepiece holder screw?") You could also contact Meade; they will likely send you one free.
Subject:	re: Replacing the ETX  RA Mechanical stop 
Sent:	Wednesday, April 4, 2007 20:59:50
From:	richard seymour (
You asked:
> The stops take away about 30 degrees of rotation. Am I correct?

The stops take away about 100 degrees of motion.

The stop-to-stop rotation is from about Az=260 (a bit south
of west) clockwise to north, continue clockwise a full turn
to north again, then finally hit the second stop about
10 degrees south of east.  Az=100, but on the 2nd turn.

So total motion is about 470 to 490 degrees.

From the photo, it sure looks like a matching
pair of "teeth" is missing at the 4 o'clock position
(as posted on Mike's site)

good luck
--dick (only 61)

Subject:	ETX Hand Controller wiring diagram
Sent:	Wednesday, April 4, 2007 14:00:29
From:	Ralph Goldsmith (
Where can I find a wiring diagram for the basic hand controller?  Four
wires have become disconnected from the PC board in my controller and I
can find no guide to which wire gets reconnected to where.

Subject:	about my  site
Sent:	Monday, April 2, 2007 22:11:09
From:	BALCEREK Rginald (
Hi, my name is Reginald Balcerek and i'm from Dunkerque in france. one
year ago i decided to buy an etx 125pe and i'm quite satisfied of this
telescope. so i decided to built a website which is here -->   

I'd like to know if you can speek about my site on yours ? Your etx site
is a reference for me everyday ans i learnerd a lot reading all those
thank U
(sorry for my bad english).

Subject:	Re: Replacing the ETX  RA Mechanical stop 
Sent:	Monday, April 2, 2007 08:45:58
From:	Al Mlinar (
Here's that old guy again.

I would like to know if in the picture, the plastic Mechanical stop is
in the correct position.

I thought that I broke the stop but it looks to me as if the broken off
parts were removed intentionally.

I ordered the Stop Ring but the order is pending. If I don't receive the
stop ring, I'm all set to put in my own stop.

The stops take away about 30 degrees of rotation. Am I correct?

Thanks for being so helpful.

Al Mlinar
Little Falls NY


From:	P. Clay Sherrod (
Actually the stop appears to be okay.  The only way to know if it is
operating is to "assemble" the fork back on top and position the
reassembly over and over again until you get the scope to stop rotating
CCW just past the control panel.

Dr. Clay
Arkansas Sky Observatories
Harvard MPC/ H43 (Conway)
Harvard MPC/ H41 (Petit Jean Mountain)
Harvard MPC/ H45 (Petit Jean Mtn. South)

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