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This is my exact use case also. In fact, my east horizon is just 10-15 degrees off the meridian due to trees. I would love to have the option of the mount always on the 'flipped' side. So it's not "track past the meridian" but rather "go-to and start tracking before the meridian".
In other words, a user settable filp point.
On Tue, May 18, 2021, 4:03 PM Walter Vinci <wltvinci@...
Sorry, I should have explained better my use case. Sometimes I found myself ready to start imaging a subject that is about to pass the meridian (say in 30mins), but didn’t quite. Then I would be happy to start imaging pre-flipped, if you wish, so that I do not have to interrupt the imaging session in between.
In this case goto doesn’t work since ASCOM will tell the mount to orient the counterweight down, as it should. No biggie, as you said a manual slew will work. I was just thinking whether a manual flip commanded by APT is a functionality I misunderstood, if it is a bug in APT or there is a problem with the ASCOm driver.
Thanks anyway for the feedback!
On May 18, 2021, at 1:49 PM, Jerry Hubbell - Explore Scientific VP Engineering <jrh@...
On Tue, May 18, 2021 at 03:25 PM, Jerry Hubbell - Explore Scientific VP Engineering wrote:
If you want to do a Meridian flip "early" you can only do that manually
I forgot to state also that there is a better alternative to doing a Meridian Flip "on-time" The PMC-EIght and driver is fully capable of tracking up to an hour past the Meridian (depending on mount/scope configuration) and if you are in the middle of an imaging run, it is best to not schedule the Meridian flip until at least 5 minutes past the Meridian. I think that this should be possible if you are using an automation program like NINA or APT (I don't know). I use MaxIm dl and it allows me to delay the meridian flip. This is a better approach than trying to do the flip "early" and will not run into the issue when trying to do a plate solve immediately after the flip causing a pier-side miscalculation.
-- Jerry Hubbell
Vice President of EngineeringExplore Scientific, LLC.
jrh at explorescientific.com
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Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home
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