World Explorer, Satellite Development, and all that...
LX850 & Astronomy blog: http://lx850.tumblr.com
Ok, equipment list…for reference purposes only!
…Missing my RV-6. Why oh why did I sell it?!?!?!?
Quote:My LX850 does not have a lock. It is a 12". Yes, I would expect some change as a result of temp change and hopefully my TCF focuser will take care of that. This new crayford type focuser was advertised as not needing a lock but it looks like it does. I know that the crayford that I have on a refractor does need to be locked.
Meade LX850 12" C 8SE Meade ETX 90
Quote: It does not help with mirror flop which is what you are experiencing it sounds like.
Quote:Apparently there has been a change in the design and depending on when the scope was made, you might get a lock and you might not! It is needed for imaging.
Quote:no mirror lock for the 10" and 12" models.
Quote:I bought my 12" to use it for photography. I planned on getting the camera next year. I am going to be really *BLEEP* if I cant us it for rock steady imaging as meade has claimed. I paid for a professional class instrument. It better work great.
Quote:Quote:I bought my 12" to use it for photography. I planned on getting the camera next year. I am going to be really *BLEEP* if I cant us it for rock steady imaging as meade has claimed. I paid for a professional class instrument. It better work great. Well, it may all depend. I am not familiar with the specs of the smaller mirror systems, but if you are looking at doing guided images longer than a couple of hours you might have some small mirror flop issues.My guess is you will be ok though.
I would suggest you take this up with Meade while it is still under warranty because it does cause a problem maintaining focus while imaging. If you will refer to my original post I attached some graphs of the effect I was seeing in changing focus positions at different points in the sky. When you get started imaging you will face enough other problems that if you can prevent this one by sending it back to Meade now I think you will be glad you did. Meade may or may not be willing to upgrade your scope but it's worth a try. I noticed your location is just "up river" from mine so good luck from a fellow mid westerner.
Quote: I noticed your location is just "up river" from mine so good luck from a fellow mid westerner.
Quote:I use Focusmax to focus and have noticed a huge difference in the focus position, depending on where I aim the scope.
12" LX200 Classic, TMB 80SS Atik 383L+ mono, 450D(Mod), SX Lodestar Mitsuboshi OAG5, Atik EFW2 filter wheel Starizona SCT corrector Astronomik LRGB and 12nm Ha, OIII and SII filters Mitty Evolution Wedge Explora Dome, Lesvedome Automation
Quote: I am very skeptical of this but want to give meade the benefit of a doubt.