Ngc7009

[peter_4059 (Peter)]

Mike S recently inspired me to try something I've never tried before. Rather than image nothing because there wasn't a suitable target at the time I thought I'd have a go at something really small for my focal length - the Saturn nebula.

I ended up with about 2 hours of Ha and OIII subs. Very rusty with my processing but interested some of the surface detail was still visible.

I've attached the a single full frame sub and the processed crop.

[multiweb (Marc)]

That's excellent Peter. Nice details.

[RickS (Rick)]

Cool, Peter! I think I can see the little red tips as well.

[Placidus (Mike and Trish)]

That came out really well.

[strongmanmike (Michael)]

Good one Peter, yeah this is a good one to have a shot at when there is lots of Moon the main features are there...including Titan

Mike

[peter_4059 (Peter)]

Originally Posted by multiweb

That's excellent Peter. Nice details.

Cheers Marc. I found it difficult to process as some parts of it are quite bright compared to others. Ended up using masked stretch.

Originally Posted by RickS

Cool, Peter! I think I can see the little red tips as well.

Thanks for the feedback Rick. The colour combination of Ha and OIII probably wasn't ideal but I was more interested in seeing if I could resolve any surface detail with my focal length and pixel size. The red tips do show up better in the original uncompressed PI images.

[Slawomir (Suavi)]

Pretty cool image Peter. It's nice to sometimes try a different and difficult target

[peter_4059 (Peter)]

Originally Posted by Placidus;1338272object.

That came out really well.

Thanks M&T. I still find it amazing that despite the city light pollution it is possible to pick up detail in such a small object.

Originally Posted by strongmanmike

Good one Peter, yeah this is a good one to have a shot at when there is lots of Moon the main features are there...including Titan

Mike

Thanks Mike. Might spend some more time processing and give deconvolution a try

[peter_4059 (Peter)]

Originally Posted by Slawomir

Pretty cool image Peter. It's nice to sometimes try a different and difficult target

Thanks Suavi. It opens up a whole new set of opportunities and challenges.

[strongmanmike (Michael)]

Originally Posted by peter_4059

Thanks Mike. Might spend some more time processing and give deconvolution a try

.......

[RickS (Rick)]

Originally Posted by peter_4059

Might spend some more time processing and give deconvolution a try

The DeconvolveAndAddMultiscaleWorms process in PI is worth a go, Peter.

[troypiggo (Troy)]

That’s cool mate. WS this from AF or since you got back.

[peter_4059 (Peter)]

Thanks Troy. This was done at home.

[Atmos (Colin)]

That's pretty cool Peter, I've considered shooting it a few times but my focal length really wouldn't ever do it justice. It is a tiny little bugger but you're showing some nice detail

[rustigsmed (Russell)]

nice work peter, small and bright object! youve done well

russ

[ozstronomer (Geoff)]

Good one Peter, showing some nice detail

Geoff

[Merlin66 (Ken)]

Peter,
Just a question...
I had a need to set up a dummy image for plate solving, and used your full sized NGC 7009 image.
According to your sig, I assume the image was taken with a 1016mm fl and a camera with 5.4 micron pixel?
I found I could only get a successful plate solve if I used a pixel size of 10.4 micron.
Was the uploaded image a RAW image or was it reduced or modified?
Thanks for providing a great example to play with.

[peter_4059 (Peter)]

From memory it was a single 1×1 Ha sub. My sn10 is 10" f4 and the paracorr increases the fl by 1.15 factor. The qsi683 has 5.4 micron pixels. I did use irfanview to reduce the image size to get under the 200k IIS posting limit. My platesolve shows the image scale as 0.97 arcseconds per pixel.

[Merlin66 (Ken)]

Peter,
Thanks for that.
ASPS on your image gives 0.465 arc sec/ pixel.
No big deal, it did the job I needed to do.

[Camelopardalis (Dunk)]

Nice catch Peter

Maybe I should put my Edge 8 to good use one night