Re: Encoder performance during recent sub-zero nights

Patrick Spencer

That’s great to hear, thanks. It sounds like the zero Celsius rating is very conservative.


Were both mounts in your observatory Mach 2s, and if so, would there be any reason to expect different performance from the encoders used in the 1100GTO-AE?


Patrick Spencer



From: <> On Behalf Of Roland Christen via
Sent: Sunday, February 21, 2021 10:29 AM
Subject: Re: [ap-gto] Encoder performance during recent sub-zero nights


The mounts in my observatory performed normally at -10F. I monitored the encoders during that time and they worked fine. I don't know what the lowest temperature might be where they would stop working. I have two mounts in the observatory and both of them worked normally. No issues with the encoders on either mount.






-----Original Message-----
From: Patrick Spencer <patrick.spencer2@...>
Sent: Sun, Feb 21, 2021 9:53 am
Subject: [ap-gto] Encoder performance during recent sub-zero nights

Hi Roland, 

Did you have any issues with the encoder performance during any of the recent very cold nights? I know you use the standard temperature encoders, and it seems the recent arctic blast would have provided a good acid test for their limits.


Patrick Spencer

Roland Christen

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