Could I just bump this thread as I've just bought a Fornax Lightrack II. I'm interested in how the Polemaster works with it. In the youtube videos I've seen of the Polemaster, they move and rotate the camera via the mount by remote control cables to a pc in order to nail the alignment I don't understand how this would work with a tripod and a lightrack on top? Thanks
I wonder that, too. Cyclops Optics also has an adapter for the iOptron SkyTracker and such but no description of how it would work. I posted in another forum here that same question and got no replies. On another site I saw someone had to do a modification to get the polemaster to really work with their AstroTrac. They custom mounted it on the RA axis where it connects to the wedge/ballhead. That makes sense to me although probably a pain.
I've thought about the Fornax, too. I wonder how it would compare against the new SkyTracker Pro. It looks like in the US your only choice is imported, though, and even then I don't see many places selling it. When you get the Fornax, would you write up a little bit about it? And where did you order it from?
I emailed Fornax who said you can use the Polemaster on your Lightrack alignment by adjusting the fine tuning controls on the wedge. They sell an adapter mount for that purpose. I guess that makes sense. I thought I'd seen something about rotating stars but will have to do more research. I've heard the Fornax has great accuracy so I'm tempted to get the Polemaster to make it as good as it can be.
I've bought the Lightrack II for myself for Christmas and now it's packed away but I'm probably not missing much because there seems to be total cloud forecast for the next 2 weeks! However I did test it to make sure I understood how to set it up and to check I had all the bits I would need. I use it with a video tripod, star adventurer wedge, Celestron polar scope, ball head and Celestron Lithium cell that attaches to the tripod leg. I bought the lot as a package from Tring Astronomy Centre who were very helpful in advising on the phone.
I'd be pleased to review it at some point but I am very much a beginner so someone with more experience will probably give a more enlightened view. I was very pleased after it's first light. I now realise I was aligning it wrong by using Sky Safari to find NCP position to Polaris, but forgot the alignment scope is upside down, so I aligned top left when it should have been bottom right.
With that said, I managed to get this 95 second shot at 400mm of the stars with Jupiter in shot...
And this one, 124 seconds at 100mm of Orion's Belt...
I don't think I had the camera focused properly, which I realise is going to take a bit of patience and skill at higher focal lengths, but I'm quite happy with the tracking bearing in mind the alignment wasn't quite right.
I'm really looking forward to getting some clear skies after Christmas and testing her properly. I think aiming the camera is also going to be tricky so I've ordered a hot shoe red dot finder.
PS, I was going to buy a sky tracker pro. It's a great package, even including a built in usb rechargeable battery pack. The ultimate dslr astro mount on the go. But I felt I would want the chance to photograph at greater than 100-200mm so after a bit of research it came down to the astrotrack or the fornax and I picked the fornax as it seems more portable and from the stats promises to be more accurate.
Edited by JohnWatty, 13 December 2016 - 05:57 PM.