Two Deep NII Images

[avandonk]

Got rid of more flexure.

I have just fixed this last little bit of flexure by bolting a stabilizing bar between the two dovetails of my side by side.

It seems the camera and CFW just put too much torsion on the image train dovetail due to gravity at slowly changing orientations with changing lateral forces that cause flexure.

The RH200 meanwhile is sitting very stable and not moving while the dovetail it is bolted to is twisting at its rear due to a too heavy image train.

I measured this flexure before and after and it is almost gone.

Here is a bigger image where you can see the dial indicator and the rest in better detail.

http://d1355990.i49.quadrahosting.co...013_01/IMG.jpg

Test Images

LMC 3nm NII, 5x32 minutes exposure, PL16803 at -30C, all fits images are upsized before stacking by a factor of X1.5. 11MB

http://d1355990.i49.quadrahosting.co.../LMC_NII_M.jpg

NGC3576 and surrounds, 6x32 minutes. All other conditions same as LMC image. 10MB

http://d1355990.i49.quadrahosting.co.../NGC3576_M.jpg

Bolting down the tail of the dovetail worked!

Now I am off to fix the next smaller problem. Weather!

Bert

[Poita (Peter)]

Side by side is extremely challenging with regards to flex. I solved it by giving up.

When you get the weather problem solved, let me know how you did it.

[strongmanmike (Michael)]

...where's that beautiful red Italian Optic under all that

That's not rust I see on your fan grates is it ...or is it just the lighting?

Awesome fields there

Mike

[Ross G]

Again, great detail Bert.

Good luck with the flexure.

Ross.