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question about mount settings

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#1 donnie3

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Posted 02 April 2013 - 09:12 PM

I was out the other night with my new cg5 mount and when I did a 2 star alignment and put in m57 not realizing that it was below the horizon, the mount kept going below the horizon, I had to turn it off in order the keep the scope from hitting the base. what adjustments would I have to make in order to control this. thanks, donnie

#2 WadeH237

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Posted 02 April 2013 - 09:30 PM

It's possible to filter the named object lists to show only objects above the horizon, but if you tell the mount to go to an object by catalog number, it will go there.

You don't need to turn the mount off if this happens. Hitting any direction button on the hand controller will stop a slew. Also, it shouldn't actually hurt anything for the mount to point below the horizon, as long as the counterweights are lower than the scope (and normally, the mount will limit motion so that can't happen).

#3 donnie3

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Posted 02 April 2013 - 10:00 PM

wadeh237, how do you filter the named object lists. donnie

#4 donnie3

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Posted 02 April 2013 - 10:24 PM

I tried to set the ra limits +0 for the west and +180 for the east but cant seem to get the third digit to come up. the manual is not detailed enough to explain how to program this in. I set the filter limit to +20. not sure if all this is correct. need some help please. donnie

#5 WadeH237

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Posted 03 April 2013 - 12:09 AM

I don't remember off the top of my head exactly how to set the filter limits. I do know that straight up is only 90 degrees, so that's the largest value that makes sense.

-Wade

#6 donnie3

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Posted 03 April 2013 - 01:55 PM

is there anyone on this forum with a cg5 that can tell me how to set the filter limits and ra limits. thanks, donnie

#7 cn register 5

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Posted 03 April 2013 - 05:04 PM

The Ra limits should really be called hour angle limits. they don't control slewing but where the scope stops tracking when it approaches the meridian. The limits are the amount the scope can track past the meridian or slew to an object before the meridian. The maximum is +6 degrees, that's 6 degrees past the meridian. If you set it to negative values the scope will stop before it reaches the meridian.

The meridian mode is used to control how slews work to get to an object on either side of the meridian.

As for slew and filter limits, I think that limits of +90 to 0 will allow everything to be reached but not objects below the horizon.

This is complex because there are so many options and it's not easy to explain. I hope this helps but fear that it doesn't.

The best option is to set up the scope indoors, do a quick align and try things. As Wade says, pressing an arrow button will stop a slew. Running with no scope attached reduces the chance of running into things but keep an eye on where the mount is going. Leaving the clutches loose will prevent damage.

Chris

#8 donnie3

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Posted 03 April 2013 - 08:51 PM

thanks cn register 5 for that info, I will test it out as you explained. donnie






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