brenski

thanks, will give that a try

thanks. which is the tension screw?

hi, Focus Locking Screw is underneath on my Dob - and yes, it's definitely loosened

300p Flextube with sysncan/freedom find. anyone know how to fix a focuser? the focusing knob doesn't engage properly - sometimes it works as it should, but sometimes it doesn't - when it doesn't, moving the focusing knob in either direction doesn't move the barrel at all.

even with a barlow?

tube extended another 3" or so - from its first click position. should this now focus correctly? how much of the extra extn tubing can i now remove?

thanks, will check

Sky-Watcher Flextube 300P 12" SynScan GoTo Collapsible Dobsonian Telescope With Freedom Find Having trouble with focusing. I can focus with a 15mm 2" eyepiece, but 8mm is a struggle - and only (just about) doable. As you can see from the 2nd image - i've around ½mile of extension tubing attached to the tube just to be able to focus at 8mm! Ideally, I'd like to add a 2x barlow so that I can see some nice detail of Jupiter and Saturn. Currently the bands on Jupiter are (just about) visible, but my understanding is that the view should be bigger/clearer. How do i achieve this? Which 2" extn tube is the one to use to be able to focus my 8mm with a 2x barlow?

cheers

thanks, I'm not really confident enough to "not break things". I may have to find someone in the UK who can do this for me - happy to pay to get it done correctly.

that's brilliant ^ , thanks

thanks. what is a variable adjuster? is that the depth of the 0.75 to 1.0?

thanks

Hi Just wondering if I can link my Takumar lens to the Altair 183c for image capture ♦ Altair 183c > Takumar SMC 300mm F/4 [M42] 1. Can it be done? what adapter is required? 2. What about backfocus? thanks

thanks