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15 second Orion Nebula

davefrance

By davefrance
in Imaging - Deep Sky

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davefrance

davefrance

Posted
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Seemed rude not to have a quick peek at M42 whilst the moon was playing hide and seek. I had not done any alignment for my mount/tripod to take the moon so 15 seconds was the best I could get without oblong stars. Not brilliant but an added bonus for staying awake all night.

It's good to get the first glimpse but I promise Orion will get more attention next time. :smiley:  

This is 29 x 15 secs stacked in DSS

post-34685-0-25418400-1443446542_thumb.j

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pipnina

pipnina

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I, too, made use of the eclipse to take a look at M42. Unfortunately I'd have needed to go to my dark site to see what you captured (i only saw the brightest of the bright parts from my house)

Well, done. The colour balance seems to be excellent.

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davefrance

davefrance

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All my images of DSOs come out grey with hints of green :(

Colour sensors aren't too good at picking out dark colour, are they?

I have always found you have to really prise the colour out of M42 having stacked in DSS. I am not sure whether it is the sensor or DSS that tends to make everything a shade of grey. I had a D3200 before it got nicked and I think that was slightly better then my current Canon 600D. Green is the one shade I haven't had yet, I am extremely jealous  :Envy: Saying that there is some greenish tinge in my photo above, I hadn't noticed. :smiley:

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pipnina

pipnina

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I have always found you have to really prise the colour out of M42 having stacked in DSS. I am not sure whether it is the sensor or DSS that tends to make everything a shade of grey. I had a D3200 before it got nicked and I think that was slightly better then my current Canon 600D. Green is the one shade I haven't had yet, I am extremely jealous  :Envy: Saying that there is some greenish tinge in my photo above, I hadn't noticed. :smiley:

You don't want the green! I got fairly natural colours when i had a go at M42, not dissimilar you your photo (just a lot blurryer since I was unmotorised and on a 55mm lens) when i took images of M31 everything was grey apart from the outer parts of andromeda and those had a disgusting greeny tinge (not even the OIII turquoise that M42 gives off).

But then, I've seen it before where people ask for colour help in images, where they've had hours of data and I downloaded their images, opened them in GIMP and the LAB colour channels were just noise and not much else... Perhaps this is a strong argument for Mono+ filters?

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davefrance

davefrance

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You don't want the green! I got fairly natural colours when i had a go at M42, not dissimilar you your photo (just a lot blurryer since I was unmotorised and on a 55mm lens) when i took images of M31 everything was grey apart from the outer parts of andromeda and those had a disgusting greeny tinge (not even the OIII turquoise that M42 gives off).

But then, I've seen it before where people ask for colour help in images, where they've had hours of data and I downloaded their images, opened them in GIMP and the LAB colour channels were just noise and not much else... Perhaps this is a strong argument for Mono+ filters?

What's natural, I go from this to that. No change in equipment or processing methods.

post-34685-0-83844100-1443459022_thumb.j

post-34685-0-46546700-1443459031_thumb.j

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RSM

RSM

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Thanks for sharing this great image Dave. I'm new to the forum and would love to know what ISO / aperture (f/#) you run on your DSLR to capture images like this?

Sent from my iPhone using Tapatalk

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davefrance

davefrance

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Thanks for sharing this great image Dave. I'm new to the forum and would love to know what ISO / aperture (f/#) you run on your DSLR to capture images like this?

Sent from my iPhone using Tapatalk

Hi, these were taken RAW with my Canon 600D attached to SW Equinox ED80. The aperture is therefore fixed at f6.3. I cannot be specific about each of these images as the original RAW images have been deleted. They will have been taken at ISO800 or ISO1600 with shutter speeds from 30 secs to 90 secs. The result will be a stack of perhaps 30 frames, post processed in Paintshop Pro. I look to keep as much detail in the core as possible with some short exposures then try and grab more detail from the surrounding area with some longer subs.

Hope that helps. 

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gorann

gorann

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Friends,

here is my first try on the Orion nebula from 14 March this year - one of my very first astrophotos. Equipment were an Explore Scientific 80 mm triplet apo with Canon EOS 60Da on a NEQ6, 3 min single exposure without guiding at ISO 2500. When I got guiding going and started stacking a few weeks later the Orion had disappeared below the horizon. Yet slightly different colours from the other examples here, which makes me wonder if colours in astrophoto are not rather arbitrary and up to personal taste or where Photoshop happens to take you (certainly arbitrary if you include narrowband in your pictures). I will have another try soon since it is on its way back up on the sky here at 60 °N, and then I will do a range of exposures to blend together so the core does not get blown out. I know I read an instruction on how to do that somewhere on the net - just have to find it again.

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