Last updated: 23 July 2002
Subject: THANKS! And a question.... Sent: Tuesday, July 23, 2002 8:55:39 From: email@example.com (James Roskell) great site that I stumbled on while looking for info on Meade's telescope. Im a complete newbie observer, but my better half and myself have both done the reading & the research and are keen to get involved. We love the idea of the GOTO functions of the astrostar. Clear skies here in northern UK are rare and we love the idea of just being able to go out the door, setup, push, point, look. But I have a dilemma. Which to buy?? Both ETX-70AT and DS2-130ATS are very similarly priced. Obviously the DS2 should be a better scope optically, but has anything been knocked out of it to keep the price as low as that? Id appreciate the thoughts of both yourself and your readers before I spend my money. Thanks :-) James
Subject: re: DS motors and their encoder wheels Sent: Tuesday, July 9, 2002 1:35:06 From: firstname.lastname@example.org (Richard Seymour) To: email@example.com > can somebody ( expert ) tell me if the encoders on the end of the DS > motor shafts are part of the motor feedback system ,or , are they purely > a positional devise . Er, both? The motors and encoders do not directly talk to each other. The Autostar commands the motors to go at a specific speed, and the Autostar commands the encoder circuits to return the number of vanes which passed through the light/detector system. The Autostar is the device which "closes the loop" to create a feedback system. Thinking about your probable mind-set, the encoders probably do fit your definition of "purely positional". > I want to modify the system to run steppers but am wary thay the motors > may react badly ( speed up / slow down if I use a different pulse train > say from an encoder elsewhere ) Since the Autostar talks/listens to the motor/encoder systems by I2C bus commands, i'd be fascinated to learn how you plan to interface a stepper system. (Pulse width at DS- motors converted to steps per second?) Read the patent description about the system at: http://patft.uspto.gov/netahtml/PTO/search-bool.html and ask for patent 6,304,376 that might help your effort... good luck --dick
Subject: DS motors and their encoder wheels . Sent: Sunday, July 7, 2002 12:30:40 From: firstname.lastname@example.org (Duncan Radbourne) Have brought the wonderfull autostar system and a pair of DS motors , can somebody ( expert ) tell me if the encoders on the end of the DS motor shafts are part of the motor feedback system ,or , are they purely a positional devise . I want to modify the system to run steppers but am wary thay the motors may react badly ( speed up / slow down if I use a different pulse train , say from an encoder elsewhere ) regards Duncan Radbourne London England
Subject: eyepiece focusing Sent: Thursday, July 4, 2002 19:19:11 From: email@example.com (duy d du) Hey. Question. I have the 114EQ-DH4 4.5" telescope. Can I get an eyepiece which allows micro-focusing. The turn knob is not very practical for use with barlow lens and such. Any ideas? -Doug Bergman
Subject: Meade Model 4504 need information Sent: Monday, July 1, 2002 19:47:50 From: PMolfino@aol.com I just bought a Mead Model 4504 Digital Telescope for $80 and it like new. The only problem it ad no manual on how to put it together or operate. Can you tell me where I can order one or get someone to cell me a photo copy of there's' Thanks Paul in Calif.Mike here: Contact Meade and they will send you one.
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