Last updated: 17 May 2005
This page is for user comments and information specific to the Meade ETX-90RA (originally known as the "ETX Astro"), the ETX-90EC, and the ETX-90AT. 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-90EC
Sent:	Monday, May 16, 2005 13:48:33
From:	Stuart Shanker (
I've enjoyed reading the ETX site info.  I have an RA model from 1996. 
It doesn't have any upgrades to a GOTO or Autostar capability.  I have
an opportunity to purchase an ETX-90EC new at a "reasonable" price of
under $300.  Are the features of the older EC upgradable to the current
autostar version or would I be better off buying a new 90AT?  Does
anyone do an upgrade of the 90RA to an Autostar capability?  Keep up the
good work on the site.  Thanks, Stuart
Mike here: There is no upgrade from the original ETX model (now known as the ETX-90RA) to an Autostar compatible one. Yes, you could buy a base and forks from an EC (or AT) model and use the OTA from the ETX-90RA. If you purchase the EC model, all you need to purchase is an Autostar #497 (or a #495 which you can upgrade via software to a #497 via a #505 serial cable to your computer).

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