Re: AP1200 TDM absolute Encoders for AP1200 vs AP upgrade

Yves Laroche

I would too. Thanks.



De : [] De la part de
Steve Reilly
Envoyé : 19 mai 2012 15:44
À :
Objet : RE: [ap-gto] Re: AP1200 TDM absolute Encoders for AP1200 vs AP

It would interesting to see a picture of this along with the information on
the inclinometer.



From: <>
[ <> ] On Behalf
Sent: Saturday, May 19, 2012 2:42 PM
To: <>
Subject: [ap-gto] Re: AP1200 TDM absolute Encoders for AP1200 vs AP upgrade

Hi John,

I have a Mach1GTO sitting in a remote observatory with the need for positive
confirmation of the scope in park position 1 before any automated roof

What has been working well for me is a two-axis inclinometer mounted on the
OTA. Even after the mount driver confirms park, the software only closes the
roof if the inclinometer gives the "green light".



--- In <>
<> , "John
Jennings" <jennings0002@...> wrote:


Yes I agree about the video cameras and I have 4 at my observatory that
covers everything from my climate controlled equipment room, observatory
area for 2 piers and outside. It works well. But I have everything automated
with multiple failover systems. If I loose my internet and grid power, I
have automation systems that do an automated shutdown without visual like
many do.

I'm a pretty paranoid person because I was responsible for several high
volume 24x7 online brokerage trading data centers as the VP of Engineering
and Quality Assurance for the last 10 years before I just retired. I have to
have something to worry about! I probably spent more on my IT infrastructure
than a new mount as I'm used to a lights out data center approach. Even if
all my computers go dead, I can still get in and control all the observatory
infrastructure including the mounts.

Even though I have At Park sensors and multiple roof opening and closing
safety systems, I get the hebe jebes at an automated weather shutdown with 2
piers and an observatory full of expensive equipment sitting in the open
unattended with scopes just clearing the roof. I know this will pass with

Weather events happen in the desert where I'm at due to some interesting
topography and sudden storms do come up. If a mount were to loose position
due to some extreme event my roof will not close and probably everything
will get drenched before I could respond with an override. I've even clocked
some 70 mph winds recently during frontal movements. The monsoon season is
coming as well although I don't planning on imaging in the rain.

So anything I can do to help cross confirm all safety systems allows me to
sleep at night.

Having said that, I was inspired by the photos of the AP equipment in the
Antarctica. And after leaving my 1200 on the patio for 1.5 years with a
scope cover and 40 watt light bulb for humidity control, I don't worry at
all about the AP mounts! They took snow, freezes, rainstorms and 109 degrees
heat with no issues. They are bullet proof!

But I'm sure you know that.


--- In <>
<> ,
chris1011@ wrote:

In a message dated 5/17/2012 8:58:18 PM Central Daylight Time,
jennings0002@ writes:

However, when I left my scope in the desert 1200 miles away and locked
the doors, I felt a little insecure. I have a dynamite IT
infrastructure with
redundancy but any responders are 30 miles away. Anything I can do to
me another way to fix issues is important to me. With the
possibilities of
power events (yes I have UPS systems) and the software getting a
glitch in
the time routines or something, having absolute encoders would
be a plus.
You might want to install a video camera so that you can check where the
scope is pointing before applying power. That's almost like being there.
the scope ever gets lost due to some enntry or sync mistake on your
part, you
can then move the scope manually to a known park position, turn off
turn power back on and start from known park (for instance, in the
keypad we
use Park1 as reference park).


[Non-text portions of this message have been removed]

Join to automatically receive all group messages.