Ngc7009

[peter_4059]

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]

That's excellent Peter. Nice details. :thumbsup:

[RickS]

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

[Placidus]

That came out really well.

[strongmanmike]

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

Mike

[peter_4059]

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



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]

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

[peter_4059]

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.



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

[peter_4059]

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

[strongmanmike]

:scared2:.......

[RickS]

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

[troypiggo]

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

[peter_4059]

Thanks Troy. This was done at home.

[Atmos]

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]

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

russ

[ozstronomer]

Good one Peter, showing some nice detail :thumbsup:

Geoff

[Merlin66]

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]

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]

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]

Nice catch Peter :thumbsup:

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

[peter_4059]

Here's my Platesolve2 and Astrometry reports...

[Paul Haese]

The processed crop looks good Peter. I like the detail you have obtained.

[atalas]

Very cool :thumbsup:well done Peter.