Last updated: 19 February 2005
Subject: Re: ETX90 RA Adhesive Secondary baffle / Focus Sent: Saturday, February 19, 2005 00:34:23 From: RonRDudeck@netscape.com UPDATE Rev'd ETX90 from Meade. Fine focus seems to have returned, a 48 power view of Jupiter and moons has pin point sharp moon images. Saturn with rings also sharp. Used 4mm to push scope to 312power resulting in a tad fuzzy Jupiter with moons, but viewable. Scott Roberts, True to his word to make things right, called today to follow up on their repairs. You just can't ask for better customer contact for a 1997 product. Repeated the star test and this time the dark disk is perfectly centered through in/out of focus range. I found the best power range for the ETX is 48-100 and overall the 15mm/83power the most useful, what is your opinion? Thanks again for you comments. RonMike here: Glad things are good now. Certainly that magnification is a "sweet spot" for the ETX-90 but I've easily gone to 200X on good nights and even higher on bright objects.
Subject: ETX90EC Base Sent: Sunday, February 13, 2005 13:52:50 From: Allen Sellick (firstname.lastname@example.org) I need your expertise agin, I have a ETX-90AR OTA that I got as a spotting scope but it came off of a RA base. Well I was wondering if It will fit on to the EC base. Here is what the OTA looks like. I don't want to get it if it will not fit like it should.Mike here: yes, the OTA will fit
Thank you for your time Allen Sellick
Subject: meade etx-90at Sent: Thursday, February 3, 2005 15:25:10 From: Martin Ersted DR UNG (MKES@dr.dk) my name is martin, and im from denmark, copenhagen. found your site, which was great ;-) Im thinking about buying a meade etx-90at telescope, but im in doubt, and have some questions you might can answer? It is my first telescope... Is it a good telescope? Is it difficult to set up? How big is the memory? what possibilities do i have to connect it to my Mac? I hope that you can help me, Many reguards MartinMike here: As you can tell from the Site, yes, it is a good telescope. Read the Helpful Information: User Observations for some example reports.
Subject: ETX90 RA Adhesive Secondary baffle / Focus Sent: Tuesday, February 1, 2005 23:13:40 From: RonRDudeck@netscape.com First visit, great site Mike; Question: Could a repair and misaligned secondary baffle affect focus and brightness? Meade was kind enough to repair my 1997 ETX90RA in January under warranty due to known adhesive problems. When returned this week the focus and brightness are not what was experienced when new or prior to repair. Sunday night, a cool 40 at 11pm, observation of Saturn, Jupiter with moons just wasn't' bright and sharp.. Frankly, the image was far clearer on my grand child's Bushnell NorthStar 73mm reflector! Both scopes were viewed at 48 power. At higher power I could not obtain a sharp focused image on the ETX. Any ideas? Thanks in advance, Ron PS: I sent an email to Scott Roberts to see if he can check the repairs that were recorded on the unit and perhaps help.Mike here: Normally, the repair shouldn't affect those but if it was misaligned it could. Let me know what you hear. You might want to do a "star test"; see the Helpful Information: Telescope Tech Tips page if you need help with that.
tnx Mike, will check it tonight, RonAnd an update:
With 26mm on Polaris, overall rings were round through focus and out of focus range, inner dark circle was slightly off center toward 10 or 11 o'clock. At higher 12mm on brighter star going in and out of focus range produced light rays spreading from star toward 5 o'clock that would settle into same ring variance of the 26mm as focus range was performed. Not sure what this means but perhaps alignment is not a problem. RonMike here: Assuming the telescope hadn't quite reached "thermal equilibrium" (2-3 hours, depending upon the temperature with it was stored vs the outside air temperature), then you could be OK.
The scope had been outside for 8 hours prior to testing and the temp was in low 60's. The good news; Scott Roberts called today and will have UPS pick up scope and have factory inspection performed under warranty. You just can't ask more of a company with the 1997 product. tnx again for your prompt replies, Ron
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