Quote:
Originally Posted by JA
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
|
How meaningful though are these 0.5 arc sec guiding accuracy. Surely that is a reflection of the focal length and pixel size of the guide camera.
If its measured using an OAG that gives it a bit more reference but if its using a guide scope then the units of measurement would be different or don't I have that right where arc secs is arc secs regardless of pixel size and focal length?
Greg.