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Orion M78 and a MISSING nebula ?!?!

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#1 Daniel Dance

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Posted 11 February 2019 - 03:20 PM

Finally finished my M78 project I started this past December.  During processing, the color data I captured this past weekend wasn't very good - too little exposure - so I decided to use some older color data captured with my QSI-683 camera that never had matching luminance.

 

Not as  much blue in this as I wanted, as I had very limited color data and I always have trouble capturing enough blue.  But I think the color palette looks pretty cool.

 

But what is really cool  . . . .

 

I noticed a major difference between the two sets of data.

McNeil's nebula is missing from my latest luminance data.  Where did it go ? ? ? ? ? ?

 

Luminance 4 hours - Takahashi TOA-130 / reducer (f5.5) and ASI183

Color - Takahashi TOA-130 / no reducer (f8.0) and QSI-683

 

 

32122502017_ab89e891cd_b.jpgM78 Nebula in Orion by Daniel McCauley, on Flickr


Edited by Daniel Dance, 11 February 2019 - 03:32 PM.

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#2 premk19

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Posted 11 February 2019 - 04:06 PM

Very cool! Found this astrobin IOTD that's shows the nebula fading: https://www.astrobin...388185/?nc=iotd



#3 44maurer

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Posted 11 February 2019 - 07:41 PM

Really nice image, where did you shoot this from, can’t imagine in Philadelphia? What was your exposure times?

#4 dmcarlsn

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Posted 11 February 2019 - 08:08 PM

https://www.skyandte...nishing-nebula/


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