The Elephant Trunk by Kevin Morefield
50
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Kevin Morefield's picture

The Elephant Trunk

September 8, 2020

A star forming nebula about the size in the sky of a silver dollar at arms length. The baby stars are the equivalent of 4 days old in a human lifetime.

Captured in my backyard in Portland Oregon over many nights this last month. About a 150 ten minute exposures were stacked. 530mm focal length with a monochromatic camera using the Sony full frame 61 mpix sensor. Specific narrowband color filters were used to allow color to be captured.

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14 Comments

Philip Young's picture

I want this printed billboard size and on my wall. I can look at this for hours. The color tones and highlights make this fine art. 5 stars.

Kevin Morefield's picture

Thank you Phillip. I have a big 4K TV I like to look at it on!

Michele Civelli's picture

Love your astro stuff, I just started and it's so technically challenging! Your post production seems flawless to me

Kevin Morefield's picture

Thank you! I’m 5 years in now and starting to feel like I know what I’m doing. It would have been much easier if Ia.read t was expert at Photoshop but I had to learn that too. Adam Block’s video tutorial series was the basis for my learning.

Robert Huerbsch's picture

very nice work and perfectly framed. Is it HOO or SHO color palette?

Kevin Morefield's picture

Neither really. The reds are S+H, the Greens are O, and the Blues are O - S/2. The luminance channel is all H.

Robert Huerbsch's picture

Looks great. I’ve had good results with just bicolor doing:
R - Ha
G - 15-20% Ha 80-85% Oiii
B - Oiii

David Stephen Kalonick's picture

Dude, you need to make a YouTube video of this process. 👏🏼

Kevin Morefield's picture

Curious what people use to screen capture for these instructional videos?

Chris Rogers's picture

There is a free software called "Open Broadcast Software" or "OBS" for short. People use it not only for recording themselves but also for streaming themselves live too. There are loads of tutorials on youtube that will teach you how to set it up as well.

Chris Rogers's picture

Very nice. This is one of the sharpest cosmic images I have ever seen. nice job!

Kevin Morefield's picture

Thanks Chris! It’s somewhat deceiving because of the large field of view. This is with a new full frame 61 mood camera that has only recently camera out for astronomy.

Because stars are all just points of light with differing brightness, the size of the object being big (allowed by the large field of view) makes the stars look relatively small and thus sharp. I have a large telescope in an observatory that shoots technically much sharper/higher resolution images but the stars end up looking big compared to the other stuff in the frame.

Roger Hølmen's picture

Impressive work, well done!