[PRejto (Peter)]

Originally Posted by Eden

G'day Peter,



Thanks a lot for your feedback. Your comments in another thread were what prompted me to get the ONAG in the first place and I'm very glad that I did.

Most welcome!

I pondered the idea of a motorized stage myself, but I can think of several reasons why it could potentially cause more problems than it would solve. Your ICX825-based camera is an excellent solution, since it offers basically twice the effective resolution than the cameras I mentioned and has a good pixel size and high sensitivity in the NIR. What is the readout speed like for a full frame? For what it offers I think it's quite reasonably priced but wished that ATIK had used the smaller-form factor for it.

This is all very new! Download speeds seem quite fast so I hope there is no issue here. I'm sure there won't be because I don't use an AO unit and with my MEII I don't need or use rapid corrections.I have to say that ATIK-414EX looks very cool.

http://www.pbase.com/prejto/image/159103690

My only regret is that I gave up the incredibly nifty KISS Focuser that I could use with the ST-i.

I don't do unattended pier flips at this stage but I can see why it could be a problem on some targets, especially at longer focal lengths. I can't however see how it would be any less of a problem on -- for example -- a single-head OAG setup. A dual-head OAG could get the same star after a pier flip, but for the price it goes for plus the cost of two guiding cameras, an ONAG with larger guiding sensor and if necessary, a focal reducer, would be better IMHO.

Isn't that the job of a rotator with OAG and a single guide camera?

Peter