CCD vs Film? Lots of time vs no patience? Alright, this is your place to discuss all the astrophotography what's and what's not. You can discuss about techniques, accessories, cameras, whatever....just make sure you also post some nice photos here too!
I intend to mount a 400mm telephoto as a piggyback on an equatorial mount for astrophotography. Question is, does the lens need to be pointed exactly or very close to where the guide scope is pointing? If not, would it result in arcing stars? Hope to get some advice from u guys out there. Thanks for reading
"does the lens need to be pointed exactly or very close to where the guide scope is pointing? "
If possible, yes. But usually, we point the lens to the object we plan to take then point the guidescope to a star as near to target as possible.
If not, your alignment must be very accurate to avoid any errors that might occur.
