ETX-90EC USER FEEDBACK
This page is for user comments and information specific to the Meade ETX-90EC. Comments on accessories and feedback items appropriate to other ETX 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-90 EC Overtightened DEC Lock Sent: Friday, October 27, 2000 21:04:44 From: email@example.com (Jeff Pedicini) I'm pretty sure this is my fault - I think I over tightened the DEC lock on my ETX-90 EC, but the problem is that it won't loosen. The knob can turn counter-clockwise with resistance, but it doesn't back off or get any easier to turn. Any advice on what I should try to free it up ? Thanks, JeffMike here: Does the DEC lock appear to be locked? That is, can you move the tube easily in declination? If so, can you lock it so that it doesn't move easily? If the tube moves no matter whether you lock or unlock the DEC lock, then the Right Tube Adapter has failed. It is easy to replace but you need to contact Meade for a free replacement part. You can read more about this failure and some photos of the replacement process near the bottom of my first ETX-90EC comments page. You can search the site for "Right Tube Adapter" (set the pop-up menu to "exact match" to see other comments.
Thanks. The DEC lock seems to be locked. I mean, I can move the entire OTA but only with firm pressure - it doesn't slip around. If I do move the OTA the DEC lock knob turns. The problem is that as I turn the DEC lock knob - which is fairly difficult to turn, the OTA doesn't move at all - but the DEC lock knob also doesn't loosen at all. Actually I had it aligned like this last night and it worked fine. Anyhow, I decided to try to disassemble it as describe on your page. I removed the OTA but the next step is to unscrew the DEC Lock knob - and I can't do that - it will turn with firm pressure but it doesn't loosen at all. So far, I can't figure out how to loosen it. I'll call Meade Monday morning - but if you've got any other ideas, I'd sure appreciate it. I hate to have to send it to Meade.Mike here: When you try to turn the DEC knob does the OTA try to move? If so, try holding the OTA in position while turning the DEC knob.
I think what has happened is that the brass screw with the star pattern that is embedded in the DEC knob has stripped, so the knob itself is slipping over the inset brass screw. I can't seem to figure out a way out of this one. I tend to be very handy mechanically, but short of prying off the DEC knob I'm not sure what to do and I really don't want to do that as I'm afraid to scratch up the disk or other surfaces.And:
Finally got it by pressing hard outward (toward the fork) while turning the tube arm and holding the DEC knob. Other than the disk being a little bent toward the center, all appears to be well. Indeed I can't think of how else it could have gotten "stuck", so either the brass screw or the brass threads must have been slipping and I'm pretty sure it was the brass screw in the DEC knob. It appears to still work fine now that I reassembled it. I guess I could extract the brass screw and put a drop of epoxy in there if it causes me any trouble again. Thanks for the great site.Mike here: Glad you got it moving. Check out the Scopetronix DEC tip: home.att.net/~jblessin/etxdec.htm
And still more:
That must be the old ETX-90 - is it the RA ?, that Jordan is showing here - I don't believe my ETX-90 EC has that little DEC lock knob that he shows - mine just tightens with the logo bolt. I'm very new to all this, just got this ETX a few weeks ago and it is my very first telescope. Your site has been a tremendous help. I've had some trouble with the AutoStar software update - it doesn't seem to run on Windows 2000 and Meade doesn't seem to return e-mails sent to firstname.lastname@example.org. Oh well, I'll find another PC to use to do the update. I should mention that I do have the Starry Nights software which came with the serial adapter and while I haven't been outside with the scope hooked up to the PC yet - the program is still very useful, at least for a beginner, just to get an idea on where the basic things should be - like at least on which side of the house. I've had great luck with the moon, Jupiter and Saturn I got myself a T-adapter and a 37mm ring so I could attempt to hook my Sony TRV-20 digital camcorder up to the scope. This hasn't worked too well so far - I don't think the camcorder has enough range in the focus. I did a little better after slipping the 26mm lens inside the T-adapter, but I only get a small field of view in the center of the camcorder viewfinder. The first night I tried it without this I tried to get the moon, but it was just a blurry bright spot with a dark spot in the middle. Is the basic idea to just screw a camera to the T-adapter and be able to snap photo's or am I really supposed to have to insert some kind of lens inside this contraption ? My guess is that what I really need is a different camera better suited for this purpose. Any suggestions ?Mike here: Sorry about the link. I meant to use: etxtu.htm As to photography, in normal prime focus work there are no lens used in the camera (the ETX acts like a telephoto). What you attempted with the 26mm was afocal photography. This can be done; if you get lots of vignetting (which it sounds like you did), try zooming the camera lens to magnify the image from the eyepiece.
Thanks for all the help - I also found lots of info on the site about the SACIVc now, so I might give that a go - what fun! Jeff
Subject: Can you please help a newbie.? Sent: Thursday, October 12, 2000 00:59:46 From: email@example.com (Robby Haggins) I own an etx90ec. I am on the mailing list , but didnt know how to post to it so I wrote you. I am having a few problems with my scope. Maybe (Im sure) you can help. First off, I love to quality of my etx. The images I see in it are superb compared to my old 60mm... Anyway, I bought the right angle viewfinder for it, but when I slew the scopeclose to the zenith, it knocks my viewfinder out of allignment. The corner of it seems to hit the sidearm. Have you experienced this? Also, I have tried I dont know how many times to get my autostar to align. I know once I get the hang of it , it will be a cinch, but Ive had it since July, and no luck yet. I am getting really frustrated with it and am about to just give up and stick with my maunal search.I bought the connector cable and have tried upgrading it, but I can only get the autostar to accept 2.0-(H?) when I tried to load new satalite db for it, it said it ran out of memory. What else can I do?? Clear skies Robby...Mike here: Since you are member of the ETX Mailing List (assuming that's the list you mean), you send messages to it by just addressing your message to "firstname.lastname@example.org". As the finderscope hitting the fork arm, you can probably cure that by sliding the finder tube further forward in its mounting bracket. As to aligning the Autostar, check out all the tips on the Autostar Information page. As to running out of memory when attempting to load satellite data, perhaps the data is not in the correct format or that there really isn't room. Of course, that is assuming you have the #497 Autostar for the ETX-90EC, not one of the other model Autostars.
Subject: ETX-90EC; comments Sent: Wednesday, October 11, 2000 10:40:23 From: email@example.com (Calvin Martini) I really love your site! It helped close the deal on which scope I was going to end up with. It is my first scope and all I can say is that I love it! I had been using binoculars for a couple years and getting my feet wet, but sooner or later that old bug bites and you want a REAL telescope. I guess that after hearing me whine enough my husband decided now would be a good time to get me one! He thought a DOB would be a good starter, but after I spent hours drooling at telescope ads and researching etc. I decided that the ETX-90 EC was the one for me. I live in Canada so the package didnt come cheap, but I think it is more than worth the money I shelled out for it. I added the #497 Autostar, Celestron 2x Barlow, Rigel quickfinder(love that thing! soooo easy), Scopetronix base plate and flexifocus(very neat!), and a homemade dewsheild(just foam and velcro). I am still playing around with my Autostar, have not quite got it working bang on...but LOVE it anyway! All I can say is that this little beauty has surpassed my hopes and I still have to get it working 100%(the weather has been pitiful here and am just starting to get the chance to take it out a lot). Jupiter & moons and Satrun leave my mouth hanging open! I really appreciate all the hard work you and your contributors do. I come looking for updates every couple days and would probably be lost without this great site. I know that if I am stumped or have a question about something I can probably find the answer right here. I am looking forward to many nights with my little scope and I have your great site to thank for that :). Keep up the great work Mike! PS. That Dick Seymour is a wealth of great information!! I always look forward to seeing a new tidbit from him. Thanks again all! Vernita M.
Subject: Advise for ETX-90EC Sent: Wednesday, October 11, 2000 09:14:09 From: firstname.lastname@example.org (Howard H. Chung) I enjoyed reading your web pages on ETX-90EC. Please provide me some help: 1. Where can I get the best price on ETX-90EC? 2. I recently bought Meade Model 4504 (4.5" f8.0 Equatorial Reflecting Telescope) from Costco at $250 that I think I should return and buy ETX-90EC. Please advise. Sincerely, Howard Chung, PhDMike here: Outside of sales at some dealers, discounting on the (non mass market) ETX models is rare due to their popularity. But watch the various dealer web sites for short notice specials. Certainly the ETX-90EC is a capable and portable telescope that can give you years of enjoyment. But it will cost you more than what you paid.
Subject: ETX Sent: Thursday, October 5, 2000 13:22:14 From: email@example.com (Jim Cheshire) Brian, the guy on your ETX-90EC User Feedback page is having this problem, I think, because he hasn't aligned the scope. He needs to either manually align by choosing stars or auto-align. Jim
Subject: Pictor Autoguider/Imager and the ETX 90EC Sent: Saturday, September 30, 2000 14:53:28 From: firstname.lastname@example.org (Mike Thompson) I'm trying to find out if the Pictor 208XT Autoguider/Imager can be used with an ETX 90 EC both for imaging and autoguiding. I see that this sort of question has come up on your site before, but no aswer seems to be available. I have tried to ask the question of Meade (by snail mail) but have received no response as yet. If anyone out there does know.... Can the ETX be autoguided by the Pictor? If so, how does the Pictor attach to the ETX for autoguidance (Via the Autostar, or instead of the autostar, or to the Aux port on the ETX base)? How does the Autostar 'know' about the Pictor Autoguidance signals? ie What stops a 'fight' betwwen the Autostar and the Autoguider for control of the scope motors? (For reference) How does all this work on the LX200 with autostar (Which clearly can be autoguided)? The Pictor 208XT seems to give me a cheap dorway to astrophotography, when I take into account the fact that I'd still need an autoguider to perform traditional photography using the ETX and a regular camera. Any assistance that you can give me will be greatly appreciated Thanks in advance MikeT :)
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