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The M42 center shown in RGB=SII,Ha,OIII colors

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#1 nvcdk3061

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Posted 28 December 2015 - 03:14 AM

Hi,

I came out observing :) 23/24. Dec-2015, and once again I tried the M42 center part using narrowband filters,

M42-SII-Ha-OIII-800.jpg

The picture was taken with a LX200ACF 16" scope and a Atik 460ex mono camera. I used Baader NB filters, R=SII, G=Ha and B=OIII. Total exposure time was ~0.5hours. Sub-exposures from 2sec to 30sec.

Another color combination is here,

M42CenterHubblePalette-90pct.jpg

 

The SII master is here,

M42-CenterSIIMaster800.jpg

 

The Ha master is here,

M42-CenterHaMaster800.jpg

 

The OIII master is here,

M42-CenterOIIIMaster800.jpg

Thanks for looking.

Kind regards Niels


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#2 MistrBadgr

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Posted 30 December 2015 - 07:48 AM

Hi Niels,

 

Definitely different than what I have seen before, and very intriguing!  Looking at the Trapezium, I can definitely see six stars.  In some images, I think I can see some faint indications of some of the other 40-50 stars that are supposed to be in there.  I remember being told that there are something like 40 to 50 stars in a 4 light year space.

 

With your experience, do you see anything around the six Trapezium stars that looks like other stars to you?  I am thinking the Ha shot is the most likely to show them and seems to be the crispest image to me.

 

Thanks for sharing!  That is good stuff!

 

Bill


Bill Steen, Sky Hunters' Haven Observatory, Broken Arrow, Oklahoma

#3 nvcdk3061

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Posted 30 December 2015 - 10:37 PM

Hi Bill, thanks for your comments, I agree.

I have to combine the/a "lucky imaging" technique into my existing stacks to really improve the Trapezium view/to show more than six stars.

One way forward, I have to use a video camera (or a like) and take a film sequence as shown here,

http://www.cloudynig...si-224-and-ls8/

 

For now I have tried to put more Ha info. (as Lum) into the shown color picture and resize it to 180%.

The cropped and resized Ha stack(26*2sec) look like this,

M42-CenterHa-26-2secSize180pct-nvc.jpg

As far as I can see, it show more than six stars in the Trapezium.

and the color picture look like this, resized to 180%,

M42-SII-Ha-OIII-Size180pct-nvc.jpg

Your welcome.

Happy NewYear!

Kind regards Niels



#4 MistrBadgr

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Posted 31 December 2015 - 07:52 AM

Thanks, Niels!

 

That is great stuff!  I think that is the most of the dimmer stars in the immediate area of the four major ones that I have ever seen!

 

Bill


Bill Steen, Sky Hunters' Haven Observatory, Broken Arrow, Oklahoma

#5 nvcdk3061

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Posted 01 January 2016 - 03:27 AM

Your welcome Bill, hopefully later on, during 2016, I can improve.

Kind regards

Niels







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