View Full Version here: : Quickie Cat's Paw QSI683
21-07-2012, 07:37 PM
Finally managed to get out last night with the new QSI. Unfortunately the skies clouded over early on in the session however I did manage 7x5mins on the Cats Paw. For only a handful of subs I'm pretty happy with the new camera.
I've also been trying out the new version of Sequence Generator and I'm very impressed. It has all the functionality I need and seems to be a lot more robust than the earlier versions. I managed to get the plate solving working today. If this continues to work it will make imaging over multiple nights a lot easier.
21-07-2012, 08:12 PM
Looks good Peter. What temp were you using? I generally use -25C and that produces very low noise subs.
21-07-2012, 08:32 PM
Cheers Paul. I've been using -20C. I think the cooler has been operating around 50% so probably room to go lower.
21-07-2012, 08:48 PM
Peter, a really nice image for only 35min exposure. One question though - the diffraction spikes on your bright stars are double to the right but appear single on the other three. Any suggestions?
21-07-2012, 08:53 PM
Thanks Allan. The double spikes are probably misalignment of the spider vanes. Not sure how to diagnose or rectify at this stage though.
21-07-2012, 10:16 PM
Looking good Peter, some good detail there and glad the new camera is making you happy :thumbsup:
22-07-2012, 05:44 AM
22-07-2012, 07:46 AM
Nice mate! Glad you're happy with that Seq Gen and getting the plate solving working!
22-07-2012, 07:29 PM
Peter during winter you can go to -30 on a lot of nights, but I mainly use -25. This means I can run darks during the morning if I need to replace my master dark. Flats can also be run at that too.
22-07-2012, 07:59 PM
Very promising image, and it's a great camera isn't it? The noise is exceptionally low I think. I use -30C and cooler is operating around 75%.
The one-sided double spikes could be caused by being slightly out of focus. Your image doesn't looks like it's out of focus though, but I have seen that effect on occasion with my own gear if focus is not spot on so maybe it's worth checking.
22-07-2012, 08:42 PM
Great start Peter!
My 583 was running at -20 at 50-70% over the last two nights. I should push it lower during the winter months. The better cooling on the 683 should help even more.
22-07-2012, 08:54 PM
Lovely image Peter, that camera should produce some nice results
22-07-2012, 09:01 PM
Thanks for all the feedback. I realised today that I was running the camera at -15C (must have got distracted during the set up). I will definately be trying lower temperatures during astrofest. I was also thinking a few more subs would improve the noise.
22-07-2012, 09:34 PM
Very good for 35 mins of Ha, Peter! I do single Ha subs nearly that long :lol:
23-07-2012, 10:54 PM
Nice capture Peter.
Some great detail.
24-07-2012, 09:52 PM
Cheers Rick & Ross. This was actually Lum - not Ha.
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