Round and Round in Circles.

[Earl]

Really fed up at present, I have two issues which I am really struggling with.

Even guided my subs have small trails, the RA is out on my EQ6 and I cant seem to tinker it out.

Then with my Televue Reducer / Flattener going from 50mm to 60mm spacing (its recommended is 50 +-4) I cannot for the life of me get a flat image.

Attached is a single 300s Luminance Sub which shows both issues very clearly.

[nmoushon]

Its wierd that your bottom corners aren't as bad as your top corners. So maybe your reducer isn't square? Just a first thought. Can't suggest anything on the mount as I got no experience with that.

[sologuitarist61]

I can see what you mean Earl, but a lot of us would give our eye teet for an image that good. Hope you find out your problem quickly 'cos I would love to see what you would come up with then !!

[Catanonia]

Is your chip square, mine wasn't and similar problems

[Earl]

nmushon and Cat, this is something im really going to look into, the TRF reducer and the Compression ring on the focuser dont appear to be a good match as I think the ring is sitting a touch over the lip of the safety cut-out on the barrel of the reducer. However im seriously looking at a different reducer anyway as I have never ever had joy with the TRF in any scope.

Sologuitarist61, its these little finishing touches that make the difference, getting them cracked is the mission

[Earl]

Is your chip square, mine wasn't and similar problems

Not looked into that yet.... hummz

[Earl]

Thinking about this my Guiding could be spot on and the squareness is the issue...

Next clear night and with a new mount ill know

[Ewan]

Hi Earl, is your flattner this : - Tele Vue 0.8x Reducer/Flattener TRF-2008 ? i don't know too much about these products but i internet window shop for gear i can't have yet :-(, i read somewhere (if it is that one) that the CCD chip must be 55mm +/- 2mm to the flange surface for best results, so i gather 53mm - 57mm to be ideal.

Just thought i'd try to give you some options as you helped me out earlier, hope that's ok.

All the best

[Earl]

Cheers Ewan, I have gone through the whole 50mm - 60mm spacing and none are flat, not sure why as I know Nadem have had success with exactly the same gear I have.

[Ewan]

Maybe just maybe you have a deffective piece of glass then , have to agree with the above though sounds simply like the thread is very slightly offset.