Last updated: 31 December 2003
Subject: #128 3x barlow From: Kernow1972@aol.com Date: Mon, 29 Dec 2003 12:46:56 EST i would appreciate it if you could help me with a question.... I have a ETX 105EC and would like to purchase a 3x barlow, and would like to know whether the #128 3x barlow lens (typically for the 60 and 70 models) would work. I appologise if this is not the email to use for such things.. thank you anyway.Mike here: Yes, it will work. HOWEVER, if this is a new telescope you might consider the Meade $99 eyepiece deal instead.
thanks for the advice, my eye piece offer will take approx 10 weeks and i would like to have a decent look at saturn on the 31st.so on the budget side of things i thought i would try the 3x barlow .thanks again
Subject: re: ETX 105 free Play Date: Sun, 28 Dec 2003 19:07:34 -0800 From: Richard Seymour (firstname.lastname@example.org) To: Omdurman2@aol.com First, my ETX90 has over 3 degrees of slop in Altitdue, and about a half-degree in Azimuth... the Training procedure measures that and corrects for it. You wrote (twice): > 1. What is the right way to "zero" the position of the instrument before > trying the autostar initialization? It is described one way on the Meade > website, another way in the instruction manual. Please write back describing the "two methods". By seeing how you are interpreting the two references, perhaps we can find the real answer. have fun --dickAnd:
> Lastly - what is the difference between adjusting the > autostar percentages and calibrating the drives > or is that the same thing? Quite different. Please read: http://www.weasner.com/etx/autostar/as_info.html for the full story. have fun --dick
Subject: ETX 105 free Play From: Omdurman2@aol.com Date: Sat, 27 Dec 2003 15:22:51 EST Just got an ETX 105 with Autostar for XMas. I guess I like the scope but havn't had much chance to use it yet. Let me say though that the documentation manual for the scope and for autostar are absolutely horrendous - forget about getting through to the Meade help line, of course it was the day after XMas. I have several questions that hopefully you can answer: 1. What is the right way to "zero" the position of the instrument before trying the autostar initialization? It is described one way on the Meade website, another way in the instruction manual. 2. I notice that there is considerable slack in the ETX motor drives. This problem seem worse with the up and down, but is there in the horizontal as well. During drive training and during just general manual moving around from object to object the motor will start as soon as the button is pressed but there is a variable lag before the scope starts to move. This can't be a good thing I wouldn't think. Not sure what to do, is this normal (pretty sloppy design if it is), should I return to the manufacturer? I have tried a variety of tensionings on both the vertical and horizontal axis, but it doesn't seem to make much difference except when the tension is very loose the scope doesn't move at all. The problem starts as soon as light tension is applied and then persists at about the same level with progressively higher tensions. Any thoughts? Thanks. Great site. TFortuneMike here: Not certain what you mean by "zero the position". If you mean the HOME position, see the Autostar Information page for lots of info on alignments. As to the slack in the drives, some "backlash" is normal. You can adjust this with the Autostar "percentages" settings; see the Autostar Information page for more info. BUT be certain you have CALIBRATED before you do the TRAIN DRIVES. If you didn't do that then your settings could be off.
Appreciate the fast response, WOW! Yes, I meant HOME when I said "zero the position", problem is there are two different ways to do this - one in the autostar documentation and a different way on their website - maybe it doesn't make a difference - i don't know. So you mean I have to calibrate drives BEFORE training them ? - that is not in the autostar documentation - ugh! Do you think this calibration will remove the slack in the drives? I can't imagine there should be even the least little bit of slack in the instrument. Lastly - what is the difference between adjusting the autostar percentages and calibrating the drives or is that the same thing? Sorry for picking your brain but the Meade documentation stinks! Thanks TFortuneMike here: See those items I mentioned earlier on the Autostar Information page.
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