thomasv

A couple of pictures I've taken with the evoguide mounted on a fuji X-T1, both of course heavily cropped.

Just wonder if by 'reliably' you mean you don't have to discard any subs at 300mm 90sec? With the shape of PE being roughly sinusoidal, there will be some time periods with not much change for 90sec and some with a rapid change of error. I've only seen a couple of other measured reports of PE for the SA and if I remember correctly they were in the range of 30-50" peak to peak, so I may be unlucky with my mount. Another slightly amusing thing I've just found recently is that, since I use the polemaster to align, I used to leave the plastic polar scope cover on, but the setting circles on the polar scope can actually touch the plastic cover. With the RA clutch loose, rotating the axis by hand gives scratching noises as it rubs against the plastic cap. It might be in the manual which I've never read fully, that the cover is supposed to be left off for the whole session, not just during polar alignment.

I have to say I wouldn't be surprised if you get some trailing at 260mm focal length based on the periodic error I've measured for my SA, see towards the end of this post: Some people report good results for up to 300mm FL without guiding, I can't see how I could do that with my mount, I wonder if there is a fairly large spread in the extent of PE between individual SAs.

Is this a joke? Anyone willing to try, you'd be saving £1746, surely a no brainer

Hi, sure, will do, I need to get the mechanics a bit bore solid and sort out my USB issues, but then intend to get out and try it again weather permitting. There is already quite a lot out there though, have you seen this thread?

Hi, I've just posted some PHD2 plots of guiding the star adventurer in another post in this 'Mounts' group, and yes I also get the blinking lights when guiding, but I think I've established that it does not mean an error, it seems that every time the star adventurer receives a guiding pulse it will flash.

I'm wondering how your camera / lens assembly is supported mechanically? Both camera and the samyang are fairly heavy. I have a geoptik EOS adapter with a feet that can be used for support, but I think the ZWO one hasn't got one. At F2 the optical train will be very sensitive to any flexture due to weight.