Cooled Eta Car Neb excellent seeing

[kinetic]

Seeing is very good tonight.
A few results in the bag.
This one is not my my best Eta Car result with the
DSI II but my best for quite a while.
Resampled up 2x, processed , then back down
75%.
Several iterations of sharpening survive when the data
is this good. Gotta love these slow moving Highs :)

Steve

[Paul Haese]

Nice going Steve. Guiding looks superb and detail is really good. Fickle finger is there too.

[CoolhandJo]

Great detail and crystal clear!

[kinetic]

Thanks Paul and Dr Paul :)

Only guiding Paul was handpad corrections
occasionally.
Seeing has dropped off a bit, I hope you did better up the
hill mate :)

Steve

[jjjnettie]

I was eyeballing this region tonight as well.
You've done a spicko job on it Steve.

[kinetic]

Thanks Jeanette,

I used the MPCC and QHY-8 on it a bit later but it hasn't
gone as well as this one.

Steve

[peter_4059]

Nice job Steve. I was wondering if you were persevering with the cooled DSI. Did you get the Jaycar temperature controller to work or have you found another solution?

[multiweb]

:eyepop: That's a beauty. The details are very nice. :thumbsup:

[kinetic]

Thanks Marc and Peter,

Peter, nothing has changed since the last update on the DSI II
cooled thread. I'm still using the Jaycar kit and just set the
setpoint to a temp I know will hover above dew point safely.
Hysteresis is about 1 degree but it's been no real problem
in the dark frames. There are no dark holes or hot pixels left
after the pre-processing so that must mean it's tolerable.
10°C is a good place to start on these 27-30 nights and is
easily reached and maintained by the 40mm pelt and Kit.
Given time I was going to add a meaningful temp readout by
feeding the setpoint voltage into a comparator so it read out
degrees directly. In the meantime I have the almost live readout
in Nebulosity and as a comparison, the DMM probe reading live from
the cold finger.
It works, it's rough, but does the job.:)

Steve

[pmrid]

Hi Stave. Nice work. Could you please post details of the Jaycar kit you mentioned.
Peter.

[kinetic]

Sure,

http://www.iceinspace.com.au/forum/showthread.php?t=52855
post #11 in this thread, Peter4059 kindly writes up some details.
I went and got one and added it to my modifications.
Works a treat, all credit to Peter:thumbsup:

Steve

[AlexN]

Nice work Steve! I was just looking through the pics in that thread you linked, your ATM work amazes me... The CFW, motor focus etc are all beautifully done, but the mount... :) Thats something else mate.. :)

[kinetic]

Ahhh Alex...maaate...you sound like you want something built again?:)

[AlexN]

Not just yet mate.. But I've spent some time today looking at ATM GEM's and EQ Fork mounts etc... There are some pretty darn good ones kicking about.. I was looking at one from the USA earlier today, the guy is a fitter & turner by trade, He's got a home built 12" F/4 newt with a reducer/corrector setup (running at approx F/2.95) on a rather large home built GEM able to run 15min exposures all night long with great results. I don't know how he implemented autoguiding into the setup, Nor do I know how you would go about adding autoguiding to your setup, however I think if yours can run 10 sec subs, then adding autoguiding should be high on the "to-do" list...

Seeing what you do with 10~15sec subs, if you were able to guide it out to 1 ~ 5 minute subs, your setup would be a real light sucker!

Will be in touch Steve.. Projects always on the go, and I might need some mechanical know how :)

[kinetic]

I resampled this data set using a few types of algorithms and then
followed ,as close as possible, by the stack, final sharpening and
noise reduction routine that works for me the best.
I can almost not tell any difference between these crops
of the Fickle Finger. I take this to mean most resample routines
are almost interchangeable?:shrug:
More frames would smooth the detail out and allow more aggressive
sharpening, but unfortunately this set was only 75 crisp frames.

Steve

[multiweb]

#3 would be my pick. Kinds of sticks out. :)