-----Original Message----- From: Les Niles <les@...> To: Losmandy_users <[email protected]> Sent: Mon, Aug 10, 2020 09:47 PM Subject: Re: [Losmandy_users_io] Side by side saddle or piggy back scope alignment
There¡¯s no need for them to be perfectly parallel. ?If it weren¡¯t for atmospheric refraction, flexure, and polar mis-alignment, you could simultaneously image two completely different parts of the sky. ?Given that those things do happen, you probably want the guide scope to be tightly coupled to the long-FL scope, and keep the short-FL scope pointed in roughly the same direction. ?Also, the go-to controller is only going to be aligned for one scope if they don¡¯t point in the same direction.?
? -Les
On 10 Aug 2020, at 21:02, crocco1250 via <crocco1250@...> wrote:
This may not be the right place for this question but a recent post talked about side by side saddles and it raised a question. If you had a side by side or piggy back, say a c11 and 80 mm refractor, do you want them perfectly parallel or have the views more or less concentric? What are the pros and cons? If someone has a site I would appreciate more info.