Re: Backlash


thefamily90 Phillips
 

Fantastic! No imaging planned.
Thank you!

JimP


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Sunday, March 14, 2021 3:41:46 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Backlash
 
Backlash will be on the order of arc second, so it realistically won't have any effect on pointing. It can also be mitigated on that mount with careful adjustment, however it is really only important if you want to image and guide during imaging.

Roland



-----Original Message-----
From: thefamily90 Phillips <thefamily90@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Sun, Mar 14, 2021 2:10 pm
Subject: [ap-gto] Backlash

Thinking about purchasing an AP 600 E GOTO for visual observations of double stars with my AP 155 F/7. Everything about the Mount sounds good except the seller says it has significant declination backlash. As I will be using the GOTO function and searching for doubles using the RA/DEC coordinates on the keypad I am concerned about being able to align properly using 2-3 stars. Here’s what I found. Any thoughts 

JimP
Image.jpeg



--
Roland Christen
Astro-Physics

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