Last updated: 30 April 2003
Subject: ETX 60 power supply Sent: Tuesday, April 29, 2003 16:07:25 From: email@example.com (Tom Gardner) I am sending you an attachment of my home made power supply for my ETX 60 which runs on 9 volts. Problem is, I get variable voltage from the 9 volt connector which is expected. So I set the potentiometer at 9 volts but when I connect it to the scope there is nothing. Afraid of the worst, I did hook up the battery pack and everything is ok and works fine. Polarity checked like 20 times before the hook up and besides, all plugs are a mated plug, sort of goof proof. Can you help me figure out what is wrong? I get the voltage but yet it acts as if it is dead? Thanks for any help Tom
Mike here: I'm no electrical engineer so can't comment on the circuit diagram. I would suggest you look at the power supply articles on the Telescope Tech Tips page; maybe something there will provide you a clue.
Subject: 495 and ETX 70AT Sent: Sunday, April 27, 2003 14:29:39 From: firstname.lastname@example.org (DH(Hotmail)) I hope it is alright to contact you directly. There is a #495 controller coming up shortly on ebay Would that work with an ETX 70AT, so that I can connect a #505 cable to scope and computer? The #506 cable comes with Software that I have already got, and the package is too expensive over here (UK). I understand I would have to re setup parameters, as per "Autostar #497 with ETX-70AT" in Other Information. tia David HendersonMike here: Yes, it will work. But with a #505 cable you'll be able to run the Autostar Updater Application (on Meade's site) and update the #495 to a real #497 by updating the Autostar with the current ROM (2.6Ed).
Subject: Train Drive problem Sent: Thursday, April 24, 2003 16:12:35 From: email@example.com (Jack Fox) I have had an ETX-70 for about 5 months and I am very satisfied with it. The GOTO's have been fairly accurate. I decided to do the Train Drive to improve the accuracy. I went through the check list of calibrating the motors, checking all settings in the Setup Telescope for location, model, Long & Lat., ALT/Az percentages, date, time (DST), mount and leveling the mount and scope. After I finished the Train Drive procedure, I put it in the Home position and initialized the telescope entering all the data. I did Easy two star alignment. Before I did the Train Drive, my alignment stars appeared almost dead centered. Now after the procedure, the alignment stars appear outside the FOV. I went through the check list again, recalibrated ( I use a 12 volt portable power source fully charged) ,and redid the Train Drive. The results were the same. I repeated this over several nights and still got the inaccurate results with the star alignments. What could I be doing wrong? Do I need to do a RESET and start from scratch? Also, what are the correct Az/Alt percentages for the ETX-70? They are both preset on my Autostar at 25%. Should they be 15% and 1%? Thank you for the great forum to share knowledge and experiences. Jack FoxMike here: I would suggest doing a RESET. Also check the telescope model before doing the CALIBRATE and TRAIN DRIVES. Select a terrestrial object some distance away and do the training; don't forget to do both axes. As to percentages, on my ETX-70AT, which still has the factory training after two years of use, I show 50% for both.
Subject: RE: ETX-60 Meade Telescope Sent: Tuesday, April 22, 2003 12:48:42 From: firstname.lastname@example.org (Cooper, Paula) I was just checking out your book "Using the Meade ETX" WOW and author. I really appreciated the answer to my question below about the camera. Now I would like to know if your book would be helpful with my husband's ETX 60? Thanking you, PaulaMike here: There is a lot that is applicable to any ETX model and other small telescopes as well.
Subject: Information on eyepiece Sent: Tuesday, April 22, 2003 06:09:09 From: email@example.com (Amanlal) My name is Amanlal and I am a South African,you supply very good information on your site,Thanks.I recently purchased a Meade ETX 70 AT and am new to the astronomy world,it is quite hard to get information here for amateurs there are very few clubs to join in fact I only found one.I wanted to know if you could please inform me as to what are the right eyepieces to use to view planets? I have the standard 20mm and 9mm eyepiece. Kind Regards AmanMike here: For the short focal length and small aperture ETX-70AT, you probably want to consider a 2X or 3X Barlow Lens. That effectively doubles the number of eyepieces you have. Be certain to get the model specified in the manual.
Subject: Advice on older scope. Sent: Monday, April 14, 2003 05:03:29 From: firstname.lastname@example.org (Vampire Le Stat) I've been offered an older MEADE QUARTZ LX DRIVE scope which is a Schmidt Cassegrain F10, and D=102mm, F=1000mm. (Aperture fever strikes!) I'm having problems identifying it and am wondering if you think it would be a good investment? It has a DIN socket on the side, so I'm wondering if there's any way my #497 could control it? As an aside, I've been having a few good nights with my ETX70, but I seem to be having problems with some deep sky. I have only managed to 'see' one galaxy so far, and that was a pale smudge. I live in an urban area, so would travelling a few miles out of town help with my observing? What eyepiece would be best for these objects, or does the wizard known as #497 help me out there too? I have been able to view the recent conjunction of Jupiter and the Beehive cluster really well and have been impressed with my ETX. The tracking is spot on now, especially after a couple of 'synchs'. The spiral out function is really useful too. Thanks for your help, VampMike here: I doubt that the Autostar would drive that older telescope, without modifications. Bright sky conditions will obscure all but the brightest nebulae and galaxies. So going to a dark site will help. Keep in mind that many Deep Sky Objects are very small so don't expect to see any real details in your ETX-70. Increasing magnification can help but also reduces the object's surface brightness, making it more difficult to see.
Subject: Re: ETX60At: problem with Meade 3x#127barlow.:IT NOT WORK,conclusion Sent: Friday, April 11, 2003 16:00:46 From: email@example.com (jorge santillan) Good night Dear MIKEI sent it email in past week.About my MEADE #127 varible barlow 2x to 3x.I have a ETX60:::::::::THE BARLOW NOT WORK .Im sure 100%.I read that somebody wrote: yes,work.And i read in the details of the item(is a shame..i read late it),that Only is for Telecopes with f/6 or longer!!.The ETX has f5/8 i cant foind a solution for my Big barlow.1/it email is for help to other about it Not ETX barlowandmaybe,there are a way of change the barrel or something for do it to f 5/8? like the etx. Thanks!averyry for my english.
Subject: ETX 60 conversion Sent: Tuesday, April 8, 2003 08:40:38 From: firstname.lastname@example.org (Keri) Has anyone out there attempted to mount ETX 90 OTA on to an ETX 60 base? I am considering removing the 60 from the base to piggyback onto my 10" sct, but I would still like to use the base for something, and an ETX 90 OTA comes to mind... Great site! Thanks, AndreeMike here: See the Telescope Tech Tips page.
Subject: I lost my battery case. In need of serious help. Sent: Monday, April 7, 2003 19:38:16 From: email@example.com (brocra) Great Site! I need some help. I have an etx 60, and I lost the case that the batteries go in. Does meade sell a replacement? I have not been able to find one yet. Any suggestions you have would really help. Thanks. Brian.Mike here: Call them; they will send you a replacement.
Subject: re: etx-60at Sent: Saturday, April 5, 2003 15:32:24 From: firstname.lastname@example.org (Richard Seymour) To: email@example.com Mike gave the right answer, i'm just going to reword it. SELECT (or ADD) Armarillo as your site. Then, in Setup > Site > [enter], scroll up to Setup > Site > Edit [enter] by pressing [enter] four times, you are offered the NAme, LAtitude, Longitude and Time Zone for editing, but they will now have Armarillo's numbers shown. So there's your Time Zone. EST=-5, CST=-6, MST=-7, PST=-8 The Time Zone is **not** changed for Daylight Savings. The Daylight Savings answer adjusts based upon the Standard Time Zone. have fun --dick
Subject: ETX60At: problem with Meade 3x#127 Barlow?? Sent: Saturday, April 5, 2003 11:51:35 From: firstname.lastname@example.org (jorge santillan) Good night,and thanks for your very valuable site!. I have a ETX60AT. i have a MEADE #127 varable barlox 2X 3X.Large tube. The tube is large.It model of barlow is NOT for the ETX? or it can work if im adding a erecting prism in the 'Photo port' ? Thanks! MarioMike here: The ETX models tend to work better with either a "shorty" Barlow Lens (like the #126). There are two Barlow Lens models recommended for the ETX-70AT: 2X = #124 and 3X = #128. Don't know if the erecting prism would help or hurt the situation with the #127.
Thanks for your fast reply!. Today in the night or tomrrow ,i will be let know it. The tube of it large Barlow of Meade,only can fit between x2.7 to 3x of this lines inside.Only the extreme. Thanks! The site is THE SITE! for EXT Mario
Subject: Re: Confused Sent: Saturday, April 5, 2003 8:15:09 From: email@example.com (Al Massaro) Thanks, I have looked at all of the P.S. entries on the page and am still not sure which way to go. I think I am going to try the radio shack setup or something similar to it, the unit I have ready access to has a pot for voltage output adjustment, which raises another question, of max voltage allowable to the unit. I have read that it can accept up to 15 v. safely, true? I won't start that high but am concerned about not getting the pot down to an allowable level to start.Mike here: 12 VDC is best. Don't push it. Amperage is more important to avoid slewing problems.
Subject: Confused Sent: Saturday, April 5, 2003 7:55:01 From: firstname.lastname@example.org (Al Massaro) Thanks for the web page first off, it is a great source for info! I am still somewhat confused as to which power supply setup to use for my little ETX 60, any suggestions or favorites you would recommend? I am off to town to find the book (yours) today, small town USA can be difficult to find things in. Thanks again Al MassaroMIke here: Amazon.com and OPT should have the book. Thanks. As to power supplies, you could get the Meade one; alternatively, see the Telescope Tech Tips page, lots of info on Power Supplies there.
Subject: etx-60at Sent: Friday, April 4, 2003 22:38:04 From: email@example.com (pokey) on custom setup how do you find the time zone now its at -000.0 i live in a remote area and there are no large towns around amarillo texas is the closest to the south. and liberal ks is the closest to the north. any time you do the setup its way off of your stars.Mike here: You can EDIT either the entry to the North or one to South of your location. If you don't know your exact latitude and longitude you can look it up using the web page "Latitude/Longitude Lookup" on the Astronomy Links page (there are many sites on the Web where you can determine your lat/long). Just edit the entry and put in your correct city name and lat/long. Don't forget the DST change Sunday morning.
Subject: ETX 70 Sent: Thursday, April 3, 2003 12:52:35 From: firstname.lastname@example.org (De Ruddere Peter) I getting more and more impressed by my ETX 70. I have tested now several times, and if it is ok for you i will send you soon my experiences, and....am almost afraid to ask...my questions. But your site is for me verry usseful ! Thanks again Peter
Subject: Alignment Problems in North Wales Sent: Wednesday, April 2, 2003 6:36:29 From: J.Thompsonhill@btinternet.com (Julian Thompson-Hill) Great site! Now to problems. I have just bought an ETX-70AT as my first scope and am a total novice. I am finding it impossible to get the Autostar aligned on any stars. on the Easy align the scope slews all over the place often 30-70 degrees from where I think the correct alignment stars are located. I have set the correct longitude and latitude for my location - 53.33 N, 3.40W, the time is right. I am getting conflicting advice as to how to get the initial Home alignment. If I understand the general instructions I should face the scope to North as per a compass but Meade UK have told me ignore compasses and face the scope to Polaris which very often is nowhere near to my compass heading of North. I should be very grateful if you would let me have the idiots guide to alignment as this appears to fit my situation!! Do RA and Dec scales both have to be set to 0? Should the RA scale 0 arrow be facing North and the Scope then turne to Polaris. I look forward to hearing from you as I am getting very frustrated at not being able to even start using this wonderful piece of equipment. I am sorry if this is so basic a question. I have tried the FAQ and this does not help me very much. Julian Thompson-HillMike here: Ignore the setting circles for now (see the FAQ page for info on setting the DEC scale if you want to). Also, you do need to use True North, not Magnetic North. I haven't checked the difference in the UK but if you can see Polaris, point towards its direction (but not AT it). For more info on alignments, see the Autostar Information page.
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