Hi. Does making this upgrade have any possible negative side-effect on additional load to focuser when using a camera? My camera weighs some 800 grams.
@redfivemansell No, it fact it improves it. Think about the logic, it works on friction, the round bar rubbing on the flat surface, so, the more of the bar in contact with that surface, the more efficient and positive the focuser actually is.
@redfivemansell This is the thing, you'll find the flattened surface isn't flat, a result of it just being cast. As in the beginning of the video, a used focuser will show the contact points and it isn't across the whole, (supposedly) flat surface.
Hey, I'm the first to comment. This is a great tutorial. I'm having problems with a brand new telescope with a 2.7 inch crayford. I cannot believe I spent 3000.00 on a telescope and the focuser doesn't function properly. I've only had the scope for 4 days and already the focuser has given me problems. I should have gone with a rack in pinion system. I'm very disappointed. On the other hand, you've done a great job with this tutorial.
Hi. Does making this upgrade have any possible negative side-effect on additional load to focuser when using a camera? My camera weighs some 800 grams.
redfivemansell 8 months ago
@redfivemansell No, it fact it improves it. Think about the logic, it works on friction, the round bar rubbing on the flat surface, so, the more of the bar in contact with that surface, the more efficient and positive the focuser actually is.
astronomyshed 8 months ago
@astronomyshed You're probably right. Ideally, a cylinder-shaped focuser and flattened surface of the tube touch only at one point - tangent.
redfivemansell 8 months ago
@redfivemansell This is the thing, you'll find the flattened surface isn't flat, a result of it just being cast. As in the beginning of the video, a used focuser will show the contact points and it isn't across the whole, (supposedly) flat surface.
astronomyshed 8 months ago
my crayford is making a sound like a squeak sometimes,it is normal?
AndyFlash0f 10 months ago
Hey, I'm the first to comment. This is a great tutorial. I'm having problems with a brand new telescope with a 2.7 inch crayford. I cannot believe I spent 3000.00 on a telescope and the focuser doesn't function properly. I've only had the scope for 4 days and already the focuser has given me problems. I should have gone with a rack in pinion system. I'm very disappointed. On the other hand, you've done a great job with this tutorial.
helsfury 1 year ago
@helsfury The crayford system is WAY better than rack & pinion, crayfords just take a little tuning
astronomyshed 1 year ago