DS MODELS USER FEEDBACK
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Last updated: 23 July 2002
This page is for user comments and information specific to the Meade DS telescope models. Accessories and Feedback items appropriate to the ETX models are posted on other pages as appropriate. 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:	THANKS! And a question....
Sent:	Tuesday, July 23, 2002 8:55:39
From:	jroskell@vianetworks.co.uk (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:	rseymour@wolfenet.com (Richard Seymour)
To:	duncan.radbourne@btinternet.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:	duncan.radbourne@btinternet.com (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:	fugu@juno.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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Copyright © 2002 Michael L. Weasner / etx@me.com
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