Search the Community
Showing results for tags 'altitude'.
Found 3 results
I've had the skywatcher 12" dob goto for a few years and I've dabbled with tuning up the bearings. I found the first year pointing was nice and accurate but the second year it went south. Adjusting the bearings fixed that up (they were slipping in both axis). I've been dabbling with photography using a DSLR and the results are often quite good with 20-30 second exposures but I keep getting an annoying jump in the altitude axis. What I can't figure out is the exact cause. This mount has two encoders on each axis - one on the motor and one on the scope. When the clutch slips the scope axis and motor encoders mismatch so the controller kicks the motor to try and get them closer together. I figure this is what is causing the jumping. What I'm not certain about is the cause. Do you think it more likely that the bearing is loose, letting the clutch slip or that the bearing is too tight, causing the clutch to slip until the controller gives the motor an extra shot, breaking free of the sticktion?
Hi, I'm trying to figure out what is the difference between RA, DEC vs Azimuth, Altitude difference. I watched dozens of videos and read a lot of material and I think I got it all mixed now.:) From what I understand, if I want to find a star using let's say a telescope than I would need to know RA and DEC which I can get from an app or a chart. (Is there a professional way?) But if I want to point at a star as an observer than I would use an Azimuth and Altitude?
Having ordered an altitude mod plate from Gunnar, I took the opportunity to do the work today. You can read my write-up at http://darrenjehan.me.uk/blog/skywatcher-eq6-altitude-mod/ Nice and simple and worked a treat. Need a clear night now to re-align and see how it well it works in practice, but have high hopes!