Oh my God another Narrow Band image

[strongmanmike]

Here's another one :D the jolly green yellow and blue nebulae

NGC 3603 & NGC 3576

Again it is in the hubble colours (sort of) SII Ha OIII

Full Frame
http://www.pbase.com/strongmanmike2002/image/113509839/original

Slight crop
http://www.pbase.com/strongmanmike2002/image/113509188/original

NGC 3603 & NGC 3576
http://www.pbase.com/strongmanmike2002/image/113509220/original

NGC 3576 only
http://www.pbase.com/strongmanmike2002/image/113509241/original

It was fun :thumbsup:

Mike

[h0ughy]

it take a bit of getting used to, but it grows on you eventually. just popping some more pills now...... Ok i like it. was that taken this week Mike?

[strongmanmike]

:lol: I dunno...I think it is growing on me, my eyes are not too subjective now, probably becasue I am the one processing it so I see it develop thus the end product seems to look ok :shrug:

I am concentrating on getting the basic quality and subtle details in there and then the colouring is pretty subjective after that....

No I've actually had this data for a little while actually...just been waiting for the right time to be bothered processing it :P

Mike

[multiweb]

Looks great. Nice details and contrast. :thumbsup:

[dpastern]

I bet lots of people are Green with envy ;-) Good shot, I'm not familiar with this DSO though.

Dave

[strongmanmike]

Cheers Marc...green huh? :whistle:




Thanks Dave, I'm pretty "green" at this narrow band stuff too :D

These nebulae are between the Southern Cross and the Eta Carina Nebula, worth a look under dark skies with a big scope.

Mike

[avandonk]

Here you go Mike another animated gif 4MB
http://d1355990.i49.quadrahosting.com.au/2009_06/msid2.gif

My image from this thread

http://www.iceinspace.com.au/forum/showthread.php?t=39005&highlight=3576

The nova still seems to be present in your HA data.

Bert

[gregbradley]

I like it. Wonderful shot, nice and sharp and a great FOV.

I've also seen this area done with an FSQ (I did a Ha only of this area with an FSQ once)
and NGC3576 is actually in a giant sea of gas there. I have seen it presented as heavily red and
it looked pretty stunning.

Greg.

[ejcruz]

Very very nice lots of details great capture.

Cheers
Eddie

[strongmanmike]

Yes Bert, the Nova is very prominent and quite blue/green in my image, indicating strong Halpha.

Mike



Cheers Eddie, one of the advatages of a medium FL (1140mm in this case) as it means enough FL to provide plenty of detail and still provide a wide FOV :thumbsup:

Mike

[strongmanmike]

Thnaks Greg

Seems there are a number of ways to present these colours, Don Goldman used salmon pinks and grey blue and got a good result too.

Having such a nice size field with sufficient FL is pretty handy as it allows the object/s to be presented in a number of framings at different magnifications and stuill maintain high levels of detail, I think my favourite framing is this one:

http://www.pbase.com/strongmanmike2002/image/113509220/original

Cheers

Mike

[Ric]

Lovely image Mike you've captured some great depth in this one.

Glad to see your enjoying your NB filters.

Cheers

[gregbradley]

Having such a nice size field with sufficient FL is pretty handy as it allows the object/s to be presented in a number of framings at different magnifications and stuill maintain high levels of detail, I think my favourite framing is this one:

http://www.pbase.com/strongmanmike2002/image/113509220/original

Cheers

Mike[/QUOTE]

Yes that framing is best.

If you want more of the mustard colours you would have to push curves up on the red channel hard if you are assigning each narrowband to a channel in Photoshop or use a higher combine ratio for the O111 and S11 if doing a colour combine otherwise Ha as green will dominate. A ratio of 4 or 6 for red might even be needed.

Greg.

[strongmanmike]

Yes that framing is best.

If you want more of the mustard colours you would have to push curves up on the red channel hard if you are assigning each narrowband to a channel in Photoshop or use a higher combine ratio for the O111 and S11 if doing a colour combine otherwise Ha as green will dominate. A ratio of 4 or 6 for red might even be needed.

Greg.[/QUOTE]

In a nut shell I think narrow band images should in fact generally be dominant in what ever colour you asign Ha to (in this case green) becasue Ha is far more abundant just like LRGB images of nebulae are Red dominant. Of course NB imaging is a dark art so anything goes and it comes down to your interpretation of aesthetics.

Mike

[Peter Ward]

Nicely done. Cool Shrek colours. :)

[marc4darkskies]

Hey Mike, looks like the person who spit on your CCD chip had a sinus infection. :P:D.

In any case, very nice image mate (naturally) :thumbsup:. Have you thought about a barlow? Definitely prefer the cropped version (your favoured framing) - very nice! I must try this target again one day to get both objects in the field. Interesting to compare my WB version (shot at 1760mm) with your 3576 only crop: http://www.pbase.com/gailmarc/image/94206350/large


Cheers, Marcus

[Paul Haese]

Nice work mate, but time to get back to RGB. Stars are perfect as per usual.

[Bassnut]

Nice work Mike, I like the crop. Colour balance is pleasing. Try Ha:SII:Ha:OIII one day too.

[tornado33]

Again, I like the subtle changes in colour indicating varying emissions of the three elements. A cyan (http://en.wikipedia.org/wiki/Category:Shades_of_blue) colour in the centres of the 2 nebulas, grading to a Chartreuse (http://en.wikipedia.org/wiki/Category:Shades_of_green) in the outer parts :)
Scott

[strongmanmike]

Yes actually my thoughts exactly :) . Funnily enough when I am dressed in my fluro yellow/green work cloths in the warehouse I get called Shrek :P



Ah yes...Aaaaaaaaachooooooooooo!

sniffle sniffle :)

Yes considered a barlow but to date I have been so jealous of my time at the scope (no perm obs) I like the fact that I can kinda take several images in one by cropping :P. The extra FL doesn't really provide much more detail really but reduces the FOV. Your narrow+wide band combo has been pushed far harder than mine with nearly twice the exposure time so it shows some pretty good detail in the bright bits but it is hard to compare as I was trying hard for a natural look (is that possible with NB????) plus the seeing on the night I took mine was pretty crap too (actually my new site seems to make a habit of this so I may have to move?) so pushing any harder would have just been a bad approach. Getting detail and maintaining a natural appearence is actually pretty hard, the more exposure you have and aperture of course, the better.



Hey mate when you get into the real World and collect yourself a nice new FLI CCD and colour filterwheel instead of that pretend camera :rofl:you will be able to partake in this dark art of wacko colours too :P

Yes the NJP mount is incredible, it chases the seeing very well even the witch head nebula image I did at Wiruna last year was taken in amazing ly bad conditions of high wind and bad seeing but mate watching the star centroid plot was incredible it just wouldn't let the star get away :eyepop:I feel pretty lucky really



Glad you like it Fred :thumbsup: pssst!... this actually was a Ha SII Ha OIII blend just didn't say so becasue it really makes little difference IMO :shrug:...might just be the way I do things though....:shrug:



Ah yes the dark art of wacko NB :rofl:Looks like OIII is strong in the centres and Ha dominates in the fainter regions..?

[Paul Haese]

Hehehe, I knew that get a reaction. BTW, what's wrong with my pretend camera, seems to be keeping up ok with you big boys. :P (well maybe not that well, but pretty reasonable ;))

As it turns out I have a KAF8300 coming my way soon. If I win the lotto I will look at getting either the FLI or STL, but for now it will have to be the QSI. I like being an early adopter of new technology. Once I get the new camera I can do the shrek colours too. What colours was Martin doing with his entry from last years DM awards? Looks like his filters were different??

Yeah I love the EM's performance too. Bullet proof guiding, once you get rid of that nasty differential flexure. Still got some of that from time to time, but that will disappear once I get the new camera.

[strongmanmike]

Oh yeh you are doing great mate, was only playin witch ya :thumbsup:



Good on ya, knew were looking toward this have fun



Yeh??:eyepop: man I thought like that before the ASA Astrograph debarcle :doh:...I'm sure you will be luckier :thumbsup:



Mate there is no limit to the mix of colours you just have to experiment, I haven't taken enough exposure in the SII and OIII yet so the Ha is dominant, but then again it is anyway so if you asign it to green then the nebula will be greenish for sure :P



Yep watching a guide star stay well within a 1 pixel radius circle all night is almost better than the imaging....it's orgasmic even :D

[Paul Haese]

Yep I knew that buddy. Nothing taken personally, in fact I had a good giggle.