advanced vx daylight savings question
Posted 03 July 2014 - 01:35 AM
Posted 03 July 2014 - 08:45 AM
If you are having goto problems, describe your problems and procedure and you can be helped.
Posted 03 July 2014 - 08:49 AM
In short, the sky charts use GMT. GMT doesn't observe DST. Setting DST changes the hour offset to GMT by one hour, or 15 degrees of sky.
Equally important is to set the longitute on your controller. Timezones are discreet (i.e. fixed increments) and the "sky clock" is continuous. The Florida panhandle and western Texas are in the same time zone, but because of the differences in longitute, they have different sky times (about 90 minutes in RA).
Posted 03 July 2014 - 08:29 PM
I did the following to possibly help: i reset the hand controller to factory settings, then downloaded latest drivers using celestron firmware manager and installed them. i also opened the plastic case and put in new battery for the real time clock. I turned the mount on, set the date and time, using eastern time zone for knoxville, TN and daylight savngs= yes, went to menu and enabled the RTC. I will try it out again this weekend, maybe that will help some.
Posted 03 July 2014 - 08:31 PM
Posted 03 July 2014 - 08:48 PM
Posted 03 July 2014 - 08:57 PM
Posted 03 July 2014 - 09:48 PM
Posted 03 July 2014 - 10:16 PM
My VX had a bit off too on initial star. That can be cone error of the mount. It can also be that the mount isn't level perfectly. But really not of that should matter if you get good go to after 2alignment stars and at least one calibration. Then do the ASPA. Then shut the mount off and see how far off the initial go to is. It should be acceptable.
Posted 03 July 2014 - 10:19 PM
Posted 04 July 2014 - 08:29 AM
i'm thinking of either getting a skysync for exact gps and time, maybe my coordinates are off, i did get them from someone else. Or maybe a starsense autoalign, but it seems reviews for starsense are less than favorable
Save you money. None of this will affect gotos to a deep sky object for an aligned mount. If your gotos to stars and DSOs ain't good, time and location ain't gonna help.
What WILL help you?
--Make sure you center the correct alignment stars. "Almost" don't get it.
--Add four calibration stars.
--Do final centering of alignment and calibration stars with the up and right keys only.
--Always run the mount with a fully charged battery.
Posted 05 July 2014 - 08:50 PM
Moral of the story seems to be the closer to perfect you get the alignment then the closer to polar you need to sit the mount back down the next time. So I took and marked the ground where the tripod feet go and now it just takes a few seconds to get it all done!
Posted 06 July 2014 - 02:50 AM
Posted 08 July 2014 - 06:59 AM
I may have to investigate the RTC battery and firmware update also.
Posted 08 July 2014 - 01:10 PM