An experimental Rosette with a 0.67x reducer and Atik 460

[Coco]

I cant understand how I missed this post but hey-ho...

Its a wonderful image in its own right and I understand your frustration

You have some tilt somewhere? I recon this combo could be a killer,

If it gets better I'll try one on my APM which will save me a small fortune

from buying a Riccardi 0.75 ..

try the 314 to rule out ccd tilt?

[swag72]

Cheers Guy - I reckon I know where the tilt comes from and that's easily fixed. I am in contact with Lee at Greenwitch about what adaptors I can get to try to get the reducer closer to the camera. I have got it as close as I could and the results were better than this, but not perfect. If the adaptors can be found, I can lose another 10mm and that may just be enough.

Another possibility is to put the reducer inbetween the camera and the filter wheel - Not a usual setup, but may work - Perhaps.

[FranckiM06]

Wow, it is splendid result and so nice image.

Congratulation about this great shot

Franck

[cloudbuster]

nice one sarah....your'e now consistantly very good at DSO's!

[swag72]

Thanks Franck and Bob - This is a bit of an experiment though, which didn't turn out as well as I would have hoped. I have an idea though to try to get this to work better!!

[badgers]

I'd say that's a great start to your 460 imaging Sara.

[swag72]

THanks Anton, the fov with that reducer is right up my street!!

[badgers]

I'm tempted to get a Ricardi reducer for my 80/480 refractor for that kind of FOV.

I swore to spend no more money this year though : )

[swag72]

My potential issues with all reducer / flatteners I suppose is that the Pentax has a flat field already and doesn't need any form of flattener. It's designed to work with a 6x7 MF camera. Trying to get it to work with a flattener is a little tricky!

[Coco]

The detail in the centre is sublime, I do hope you drop lucky on the spacer, I'm going to try one on the APM, at 700mm it might be more forgiving.. there is also the

Vixen 0.67x am going to try that too

http://www.astronomycentre.co.uk/Vixen_Focal_Reducer_0_67x_ED81S_ED103S_ED115S_p/v73666.htm

[swag72]

Th adaptor that I'm going to try to lose me another 10mm (then I really am down to minimum distance!!) should arrive tomorrow. I look forward to trying it. After that, my next option is to put it between the camera and filter wheel!!! I really do want a reducer to work, and that one you linked to Guy is for refractors, so I would imagine that should work better. The AP reducer really isn't ideal - Fingers crossed for the next installment!!

[swag72]

Well the adaptor arrived and it is no good - As I want to use it I can not get 0mm extra spacing with it. So I am trying to see if I can get a 5mm adaptor made. If I can not get that done in anything other than aluminium (that's what they can make it from in Spain) then I am going to have to go back to the drawing board.

Guy - Do you know what threads are on that Vixen reducer?