Not sure what I am doing wrong. I got the JPL data as instructed below....
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Select your Target Body and edit: (Example) "C/2022 E3" (without quotes) and 'search only small bodies', then click search.
Edit your location
edit your time
Tabel Settings:  2,3,4,7,9
Then click Generate Ephemeris
Then download the results.
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I positioned to mount to the current comet's RA & DEC coordinates.
Connected the mount in Horizons
Loaded the JPL file created above.
Pressed Track Target, Second Horizon screen appears.
Pressed Start Tracking Now and ERROR Msg appears indicating the target is not above the horizon, which it clearly is SEE attached screen shot.

Your help is most appreciated!!
Steve

On Sat, Jan 14, 2023 at 06:36 AM, steven ho wrote:

target is not above the horizon

Stand-By I might have figured it out by watching Ray's video - https://www.youtube.com/watch?v=A2awxEMZK_0

I had the wrong STEP increment selected (Days=wrong  MINUTES=correct)

Steve

Bingo that was it. I had the wrong STEP INCREMENT selected.

I'm in business, on a cloudy day. Best time to test!!

clear skies
Steve