Actually you have a more guide stars with the typical 50 mm f/5 because of the wider field of view. I have tried guiding with larger apertures and longer focal length and found this generally be the case. -----Original Message----- From: utah-astronomy-bounces+djcolton=piol.com@mailman.xmission.com [mailto:utah-astronomy-bounces+djcolton=piol.com@mailman.xmission.com] On Behalf Of Chuck Hards Sent: Monday, March 28, 2011 6:42 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] Celestron NexGuide If you need to travel light, that's a good option. On the other hand, with only 50mm of guiding aperture, you lose a LOT of candidate guide stars. On 3/26/11, Don J. Colton <djcolton@piol.com> wrote:
The current guide programs PhD and Maxim DL can detect an error of 1/10 pixel that is why you can use short focal length guide scopes. I assume that the Celestron NexGuide can too.
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