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Mount stops tracking around 23 degrees altitude 10Micron GM1000 HPS · Jerry Gerber · ... · 2 · 119 · 2

jsg 9.55
Jerry Gerber
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Hello,

The 10MicronGM1000 mount was tracking (unguided) flawlessly until the target, M20, reached around 23 degrees in altitude in the southern sky.  The first 75 subs looked fine, the last two looked like this:2024-07-14_02-12-32_Ha-Oiii_0.10_180.00s_0076_1.jpg2024-07-14_02-15-41_Ha-Oiii_0.00_180.00s_0077_1.jpg

My model altitude limits were set  to 80 degrees through to 30 degrees.  Could that be why the tracking failure occurred? 

Or is there a tracking limit in the mount's settings somewhere I can set?  23 degrees wasn't that low on the horizon, yet NINA's error message said the object is too close to the horizon to track.  

Anyone have similar experience?

Thanks!
Jerry
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andreatax 9.89
andrea tasselli
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First, 23 deg is considered very low, more so at your image scale and yes, programs and mounts can be set to stop tracking once they reached a given altitude, generally 30deg but it could be lower. Mine have none so they can track at any altitude (and correct for refraction).
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jsg 9.55
Jerry Gerber
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The mount is set to stop tracking below 25 degrees altitude.  Problem solved.
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