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The Great Orion Nebula · **2 Likes**

I have been having a lot of fun lately with my astro setup. I promise to post some shots with my K1 and 645D later, but for now here is one more with some more specialized equipment.

I shot this over the weekend in my light polluted Colorado backyard.

This is M42, or The Great Orion Nebula, a stellar nursery. Hot dust and gasses are so dense here, that they eventually pull together. Once enough mass is gathered, a reaction begins to happen. Nuclear fusion is sparked and one more star starts to shine.

Taken with a Celestron RASA 11 and a dedicated cooled astro camera. This image was made from 500 separate 10 second images.

A larger version can be seen here: https://scontent-den4-1.xx.fbcdn.net/v/t39.30808-6/261420635_102210133531828...2d&oe=61AC5178

**angkymac** · 12-01-2021, 10:41 PM

Absolutely jaw-dropping to me!
And that image really is nature in its real existence?!
I marvel at the intricate veining in a macro shot of a leaf.
And this is at the opposite end of "intricate"!
Angky.

reynb · 12-02-2021, 01:27 AM

Wow! Brilliant!

**RobA_Oz** · 12-02-2021, 02:31 AM

Really good work, there. What was the angle of view for this photo?

tncasual · 12-02-2021, 06:57 AM

Wow. Just wow.

**MikeNArk** · 12-02-2021, 10:22 AM

Spectacular image. Great work.

Colorado CJ · 12-02-2021, 11:38 AM

Thanks everyone!

Originally posted by angkymac

Absolutely jaw-dropping to me!
And that image really is nature in its real existence?!
I marvel at the intricate veining in a macro shot of a leaf.
And this is at the opposite end of "intricate"!
Angky.

Yes. this is a true color image. No additional coloration or anything was applied.

If you have a large enough scope and a dark enough sky, you can see a similar (though not as detailed ) image, even the coloration.

Colorado CJ · 12-02-2021, 11:42 AM - **1 Like**

Originally posted by RobA_Oz

Really good work, there. What was the angle of view for this photo?

The Rasa 11 is the equivalent of a 620mm F2.2 lens. My astro camera has an M4/3 sized sensor.

So, the angle of view is 1.22 degrees x .81 degrees. You can have two full moons side by side in this image.

**RobA_Oz** · 12-02-2021, 01:44 PM

Originally posted by Colorado CJ

The Rasa 11 is the equivalent of a 620mm F2.2 lens. My astro camera has an M4/3 sized sensor.

So, the angle of view is 1.22 degrees x .81 degrees. You can have two full moons side by side in this image.

Thank you. It seems that M4/3 still has some advantage in this field.

Colorado CJ
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12-02-2021, 11:42 AM - 1 Like	#8
Colorado CJ Veteran Member Join Date: Sep 2010 Location: Colorado Photos: Gallery \| Albums Posts: 1,429 Original Poster	Originally posted by RobA_Oz Really good work, there. What was the angle of view for this photo? The Rasa 11 is the equivalent of a 620mm F2.2 lens. My astro camera has an M4/3 sized sensor. So, the angle of view is 1.22 degrees x .81 degrees. You can have two full moons side by side in this image. Attached Images

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12-01-2021, 10:41 PM	#2
angkymac Loyal Site Supporter Join Date: Nov 2019 Photos: Albums Posts: 9,032	Absolutely jaw-dropping to me! And that image really is nature in its real existence?! I marvel at the intricate veining in a macro shot of a leaf. And this is at the opposite end of "intricate"! Angky.

12-02-2021, 01:27 AM	#3
reynb Pentaxian Join Date: Dec 2007 Location: Bundaberg, Australia. Posts: 1,267	Wow! Brilliant!

12-02-2021, 02:31 AM	#4
RobA_Oz Site Supporter Join Date: Nov 2008 Location: Tasmania, Australia Photos: Gallery Posts: 8,209	Really good work, there. What was the angle of view for this photo?

12-02-2021, 06:57 AM	#5
tncasual Pentaxian Join Date: Oct 2020 Location: Tennessee Posts: 881	Wow. Just wow.

12-02-2021, 10:22 AM	#6
MikeNArk Loyal Site Supporter Join Date: Sep 2019 Location: Conway, Arkansas Posts: 15,261	Spectacular image. Great work.

12-02-2021, 11:38 AM	#7
Colorado CJ Veteran Member Join Date: Sep 2010 Location: Colorado Photos: Gallery \| Albums Posts: 1,429 Original Poster	Thanks everyone! Originally posted by angkymac Absolutely jaw-dropping to me! And that image really is nature in its real existence?! I marvel at the intricate veining in a macro shot of a leaf. And this is at the opposite end of "intricate"! Angky. Yes. this is a true color image. No additional coloration or anything was applied. If you have a large enough scope and a dark enough sky, you can see a similar (though not as detailed ) image, even the coloration.

12-02-2021, 01:44 PM	#9
RobA_Oz Site Supporter Join Date: Nov 2008 Location: Tasmania, Australia Photos: Gallery Posts: 8,209	Originally posted by Colorado CJ The Rasa 11 is the equivalent of a 620mm F2.2 lens. My astro camera has an M4/3 sized sensor. So, the angle of view is 1.22 degrees x .81 degrees. You can have two full moons side by side in this image. Thank you. It seems that M4/3 still has some advantage in this field.

Night The Great Orion Nebula

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