After the preceding I suppose I should restate the bit about "having no material interests whatsoever in ZWOptical" - although you might say Sam "bribed" me with 2 free cameras back in early September 2012 when he sent them to me for testing..!
Yesterday morning (27th Jan local date) we targetted Zuben elgenubi.....well, I think it was! to collimate again even though it had been done a few hours earlier for Jupiter - because I find that mirror shift (possibly from primary baffle/sleeve tolerances) creates collimation shifts when slewing the C14 from one area of sky to somewhere quite different.
The plus was it was reasonably close to Saturn in the sky - the minus was that seeing wasn't fantastic and coupled with a fairly dim star it made accurate collimation hard to gauge...
Normally I would do a quick Registax processing of the diffraction rings avi "on the fly" when I thought I was "on the money" to be absolutely certain, but clouds looming in the West had me go without this task.....I can't say I regret it really because during the second avi just when we were halfway through the green channel (I shoot B-G-R for Saturn at present) clouds scuttled anymore imaging - and this second blue channel looked even better than the one in the first & only complete set..!
But regardless of all this I was pretty pleased with the image outcome where a wealth of detail is clearly evident on Saturn's disk including cloud details and spots etc.....the Encke cleanly "split" right around and various other ring details also clearly displayed - I'm now starting to get quite excited considering it is a full 3 months from opposition and it'll reach 70 degrees down here in Oz then.....seeing was "fair to good" but I've seen much better judging by DR fluctuations and scintillation!!!
As to the ASI120MM - I'm finding having 7000 frames captured in each channel a pretty hard act to discount.....and as I also said before, somehow 5000mm f/l images seem to take significant upsampling very well - although I still haven't been able to use my variable image scale fitting due to clouds etc..!
Also, I might have to retract some of what I said about the ASI120MM using the iR742nM filter.....the night before I grabbed some very respectable images using said filter with Jove at about 30 degrees - I'll post those later.