Neo-Classical Gas

[Peter Ward]

Bagged a little NB data prior to work comittments, and finally had a chance to put it together.

Very nearly didn't publish this, as frankly it needs 10x more data, but.... who knows when mother nature will co-operate on that :rolleyes:

I also came to the realisation there is a real dark art to NB processing...the learning curve was fun. The field is un-cropped and shows some field curvature with the 16803 sensor. The trap is nicely resolved in the original data, with e & f stars to boot :)

As time goes on I expect I will be able get some more exposure time, smooth the noise and extract some subtle SII information..... anyway enough with the excuses and waffle:

here is the link (http://www.atscope.com.au/BRO/gallery126.html)

[renormalised]

Nice piccie, Peter:)

Actually, it looks as though it was drawn with pastels on purple art paper!!:)

[Peter Ward]

Pastels and purple art paper ? Thanks..... ...I can work with that

(The reality is............. NB is mainly green :) )

[multiweb]

Details are outstanding but I'm not too keen on the colors that make it look a little flat. Very cool still. :thumbsup:

[Peter Ward]

Thanks for the feedback Marc.... I re-worked the data this morning and uploaded that version just now.

Without extra (SII) data, M42 in NB is decidedly green...due masses of H-alpha everywhere... I suspect several iterations are in the pipeline :)

[gregbradley]

Very nice.

I am always impressed with the tight star sizes you get with your RCOS.

Greg.

[TrevorW]

Lovely colours Pete

[Peter Ward]

Ta Greg. It's an amazing scope but the reality is: the seeing rarely does it justice.

That said, the thermal stability of the system is scary. It will hold the same focus for weeks, if not months.

More data however, would be good....

[Peter Ward]

Thanks trev. :)

[marki]

I like the colours and composition Peter but that big old chip is really pushing the scope judging by the star shapes on the outer edges. Be interesting to see how your new scope handles it.


Mark

[Peter Ward]

Agreed....there are all sorts of things going on at the edges that I never really noticed until I put the NB filter wheel in place. Part of the problem is the stars are so tight... showing up any tilt, curvature or less than optimal spacing...which all need fixing.

Attached is 100% crop of the SII core data.... given it is 40 minutes of exposure and not a stack of "planet cam" shots...the stars are as tight as a fishy's...well..... you get the drift :)

[Peter Ward]

Must have been a bit bored under the clouds....

At the same URL (http://www.atscope.com.au/BRO/gallery126.html) is a roll-over image of the Trapezium via Hubble and my somewhat smaller earth-bound Ritchey.

To be fair, there are decidedly higher resolution HST images of the trap, making my stars look like amateur-amoebic-blobs, but this I/R one shows more background stars.

I'd be interested to know: have any IIS members have imaged this region in NIR ?

[Stevec35]

Yes - I have. Not one of my best IR images but it does show a lot of stars.

Cheers

Steve

http://members.pcug.org.au/~stevec/M42_IR_STL11K_RC.htm

[Peter Ward]

Wow! Excellent Steve! :thumbsup:

[multiweb]

Very tight indeed. Really nice.


That's real cool Steve. What filters bandpass do you use for near IR imaging? ANy links?

[Stevec35]

Thanks Marc. The filters are by Astrodon. The link is:

http://www.astrodon.com/products/filters/near-infrared/

Basically you have infrared luminance which doesn't pass anything shorter than 700nm and R,G and B having responses centered at 850, 830 and 750nm. It's not narrow band though as the filter responses are quite broad. I've enjoyed playing around with the IR filters and of course they enabled me to image that recently discovered globular apparently before anyone else.

[Ross G]

I really like your photo Peter.

Great closeup with lots of detail and smooth colours.

Thanks.

Ross.

[Peter Ward]

To quote the King: thank you.... Thank you very much. :)

[Paul Haese]

The colour is not to my taste Peter, but the detail is excellent. Very sharp and the stars are not pink. Perhaps a larger resolution would be even more interesting to view.

[Peter Ward]

Colour? Not to taste? Too much Chilli?? :)

Thought about larger res file... but it needs more SII data...and being knobbled by the perpetually cruddy weather here...it will not happen soon it seems.

P.S.
AP Riccardi Honders due to lob in about 9 days :party::cool::party: