Quote:
Originally Posted by gregbradley
What exactly does < +/- 7 arc secs PE mean? Does it mean 14 arc secs accuracy? Or does it mean 7 arc secs peak to peak?
For example Software Bisque say their MYT mount is a maximum of 7 arc secs peak to peak which is clearer as it means the total PE not half of it.
Greg.
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Hi Greg,
I would take it to mean <7 arcseconds either side of some nominal point (possibly the mean), so that would make <14 arc seconds peak-to-peak. The specs that I saw for this mount, did however state it as <±10 arcseconds PE, making it <20 arcseconds PE peak-to-peak. The Cloudynights review above (thx Robert) shows guided tracking error results of ~0.5 Arcseconds for RA & DEC.
Best
JA