Vela SNR Mosaic without Stars in 3nm NII

[avandonk]

When weather permits I am collecting what I can of the Vela SNR in NB and RGB.

Here is a two panel mosaic without stars. FoV 6.1 x 3.4 degrees. 3MB

http://d1355990.i49.quadrahosting.com.au/2013_12/VSNR_2P_NII_NS.jpg


Here are both stacks as compressed fits only corrected for darks and flats. 26MB

http://d1355990.i49.quadrahosting.com.au/2013_12/2P.zip



Bert

[Regulus]

The depth and detail in this is quite stunning.
Can't stop exploring it.
Excellent, and other superlatives.
Trevor

[gregbradley]

That's pretty amazing Bert. A lot of fine structure I haven't seen before (this is one of my favourite sky areas too).

Some of those filament areas are clearly bowing out away from our view in your image which I haven't seen in other images.

Nicely presented.

Greg.

[avandonk]

Thanks Trevor and Greg. I still have an awful lot to learn but we are getting there.

Is there some way to reconstruct a 3D image from 2D data? I have seen it done somewhere.

Here is a full res version with stars. 6MB

http://d1355990.i49.quadrahosting.com.au/2013_12/VSNR_2P_NII.jpg

As you can see the stars get in the way to see the dim stuff clearly.

With this detail the Vela Supernova Remnant looks eerily like the Crab Nebula.

Crab Nebula. Distance 6500 light-years and about 6 light-years across. 1000 years old. Hubble image is 6 arc seconds wide.

VSNR. Distance about 800 light-years and about 100 light-years across. 11000 years old. My image is 6.1 x 3.4 degrees and there is more of the SNR outside even this FoV.

Large image from Hubble here

http://hubblesite.org/newscenter/archive/releases/2005/37/image/a/warn/

Bert

[glenc]

Well done Bert and a very interesting image.

[nebulosity.]

Stunning image Bert :thumbsup: love it. Will enjoy testing out my processing skills with your data.

Jo

[avandonk]

Below is a small image with an arrow pointing to the position of the Pulsar that remained after the SN.

bert

[RickS]

You are probably thinking of the 3D animations by J-P Metsavainio:
http://www.astroanarchy.blogspot.fi/search/label/animations

They are very nice, but as J-P says they are: "a mixture of science and an artistic impression"

Cheers,
Rick.

[rat156]

Hi Bert,

Great image mate.

Your star rejection workflow still leaves artefacts, I haven't found one that I like, some work OK for some images, but not for others. But like you have said, some of the fine detail is hidden by the multitude of stars.

Cheers
Stuart

[nebulosity.]

G'day Bert,

I had a play with your data, hopefully it looks alright. To reduce the stars I used star tightening in Nebulosity, it seems to work well. Thanks for letting people use your data, it's great for trying out different processing techniques that I wouldn't otherwise be able to with my own.

Cheers
Jo

[avandonk]

Thanks for that Rick it was what I had seen but lost the link. Bert

[avandonk]

I have a not so secret weapon Stuart. It is an Astrodon 5nm Continuity Filter that collects NB near HA and NII and only records stars, as its wavelength is outside any nebular emissions. This data can then be used to subtract stars and haloes with surgical precision. I hope!

Bert

[avandonk]

My system has cost in excess of $70k. I would be a fool to keep it all to myself. The data it generates is not much good in a dark drawer or worse limited by my own abilities. It is a fundamental pillar of scientific endeavour for free and frank exchange of data or information. If someone can learn from playing with my data that is a very good thing. It is even better if they can do better than me, then I may learn something.

Before I retired my job was to maintain and improve and then collect data with three million dollars worth of x-ray crystallography equipment for CSIRO.

If ever anyone wants any data just ask.

regards to all

Bert

[Ross G]

As always Bert....... amazing detail!


Ross.

[avandonk]

I have managed to collect 16x16 min of OIII without the Moon. Detail looks very promising.

Large images 6MB

http://d1355990.i49.quadrahosting.com.au/2014_01/VSNR_P1_OIII.jpg


http://d1355990.i49.quadrahosting.com.au/2014_01/VSNR_P1_OIII_I.jpg


There is even a mini clone of the Pencil Nebula.


Bert

[Spookyer]

Great stuff!

This one is on my "to do" list but I might have to get a bit more experience before I can do it any justice.

Brett

[gregbradley]

Looking good. It looks like a giant spiders web. We are lucky this object is visible from the Southern Hemisphere.

Greg.