The Milky Way around 11 hours now with 4 hours of infrared added

[Stevec35 (Steve)]

What's not to like? Pinpoint stars and vivid colour. I must admit I'm slightly bothered by the red finding it hard to relate to what it's actually showing me. Obviously Ha and SII puts a whole new perspective on things. In any event it's a spectacular image Greg.

Cheers

Steve

[gregbradley]

Originally Posted by Ross G

Great looking wide photo Greg.

I love the colours.

Ross.

Thanks Ross. Its a different look to a familiar object.

Originally Posted by Stevec35

What's not to like? Pinpoint stars and vivid colour. I must admit I'm slightly bothered by the red finding it hard to relate to what it's actually showing me. Obviously Ha and SII puts a whole new perspective on things. In any event it's a spectacular image Greg.

Cheers

Steve

The Ha and S11 are precisely registered to the image but at that image scale it really is only showing the broad strokes which I personally like as it shows the broad extent of Ha and S11 in the Milky Way. But I understand the red may look unusual after all its narrowband and the rest is broadband.

Greg.

[Phil Hart]

Great piece of work Greg. Nicely done.

One thing you haven't made obvious in your description is the mosaic nature of the image.. how many frames with your 50mm have you used to achieve that field of view?



Phil

[multiweb (Marc)]

Love the colors Greg. The deep red in the dark dust lanes are very obvious. The high-res is very tidy indeed.

[gregbradley]

Originally Posted by philiphart

Great piece of work Greg. Nicely done.

One thing you haven't made obvious in your description is the mosaic nature of the image.. how many frames with your 50mm have you used to achieve that field of view?

The Ha and S11 are 3 panel mosaics (Ha was 20 minute subs, S11 15 minute) the DSLR is not a mosaic its a single frame (2 x 60 minutes F5.6 ISO400).

Thanks for the push in the direction of longer subs and lower ISO. It paid handsomely here.

Greg.



Phil

Originally Posted by multiweb

Love the colors Greg. The deep red in the dark dust lanes are very obvious. The high-res is very tidy indeed.

Thanks Marc. I liked how the dust turned out.

Greg.

[White Rabbit]

Wow, nice work. You could get lost in there.

[gregbradley]

Originally Posted by White Rabbit

Wow, nice work. You could get lost in there.

Thanks for that. It is quite immersing.

Greg.

[Joshua Bunn (Joshua)]

Stunning Greg and quite unique.

Josh

[strongmanmike (Michael)]

Jesus, how good is that Greg! very in your face galaxy...and to think Voyager 1 is heading into that....

Mike

[Bassnut (Fred)]

Originally Posted by jase

What a stunner Greg. I think you've found your calling. Time to sell off your long focal length gear. Top shelf image.

Wha... . Anyway, spectacular Greg excellent work .

[strongmanmike (Michael)]

Originally Posted by Bassnut

Wha... . Anyway, spectacular Greg excellent work .

Awe come'on Fred, it's 50mm man!!...how long do you need to go

[Bassnut (Fred)]

Originally Posted by strongmanmike

Awe come'on Fred, it's 50mm man!!...how long do you need to go

55 or even 60mm I would've thought . Mind you, it gets a bit hard after that, you wouldnt want that, too hard.

[gregbradley]

Originally Posted by Joshua Bunn

Stunning Greg and quite unique.

Josh

Thanks Josh.

Originally Posted by strongmanmike

Jesus, how good is that Greg! very in your face galaxy...and to think Voyager 1 is heading into that....

Mike

Thanks Mike. Yes it is an eyeopener

Originally Posted by Bassnut

Wha... . Anyway, spectacular Greg excellent work .

Cheers Fred.

Originally Posted by strongmanmike

Awe come'on Fred, it's 50mm man!!...how long do you need to go

Actually its 14mm!!

Greg.

[IanP]

Yeah, 14mm makes sense, 50 – hasn’t.
Awesome image, Greg!!!
Thanks for sharing …

[gregbradley]

Thanks Ian.

The 50mm is referring to the Ha and S11 data accumulated on my Proline. I used a Nikon 50mm F1.8g lens on it and its a 3 panel mosaic which has been registered with the DSLR image and blended.

Greg.

[astronobob (Bob)]

Wow, This is Insane Greg, & your technique in capturing is mind boggeling, Much Credits to you

[madbadgalaxyman (Robert)]

Originally Posted by gregbradley

I like the dust areas, they extend upwards and below a long way and very little around the centre. It reminds me of the Sculptor Galaxy image by R Jay Gabany that shows the dust jets that rise vertically from that galaxy.

Greg.

Indeed, Greg, the vertical extensions of the dust clouds in your image look very intriguing and interesting.

I recall gabany's image of NGC 253; while NGC 253 does have plenty of dust streamers and elongated dust clouds exiting at right angles to the plane of its disk, I remember thinking that gabany's image had a very bad case of artefacts ( = things seen in the processed image that do not exist in the real NGC 253). The dust features in gabany's image are much more continuous and much better defined than they are in the actual galaxy itself. However, there is strong evidence for ejection of gas and dust from near the centre of NGC 253 and there is moderate (tentative) evidence that the spiral region of NGC 253 is so active that it is ejecting gas and dust at right angles.

I had been under the impression that the dust clouds seen high above the galactic plane, in Milky Way images, are just ordinary giant molecular clouds (star forming regions containing quiet formation of low mass stars), but the large vertical extent of the dust clouds above the Milky Way plane does make me wonder if there is not some kind of ejection mechanism pushing the gas and dust outwards.

Best regards,
Robert

[madbadgalaxyman (Robert)]

Originally Posted by gregbradley

Thanks for that.
Yes you definitely get a sense of the shape of our Milky Way here. Also the top right part looks a little bit flat in shape so I wonder if we are looking at the top part of an arm with the side as well.

The textbooks tend to say that a lot of the "very high up" material seen in images of the Milky Way is not actually very far from the plane, in physical distance, and that much of it only looks like it extends a long way out at right angles to the plane.... because it is nearby in space.
(e.g. the Ophiuchus and Lupus clouds)
However, it is pretty easy for spiral arms and even for the overall thin disk structure of a galaxy to be bent out of and away from its plane, by gravitational forces; remarkable numbers of galaxies have bends and warps and tilts in their plane.
So one cannot exclude the idea that the material far above the plane has got there through tidal forces.

As for the gas and dust complexes, I am sure that a few supernovae could blow them "sky high" above the principal plane.

[gregbradley]

Originally Posted by astronobob

Wow, This is Insane Greg, & your technique in capturing is mind boggeling, Much Credits to you

Wow, thanks Bob, that's quite a compliment!

Originally Posted by madbadgalaxyman

Indeed, Greg, the vertical extensions of the dust clouds in your image look very intriguing and interesting.

I recall gabany's image of NGC 253; while NGC 253 does have plenty of dust streamers and elongated dust clouds exiting at right angles to the plane of its disk, I remember thinking that gabany's image had a very bad case of artefacts ( = things seen in the processed image that do not exist in the real NGC 253). The dust features in gabany's image are much more continuous and much better defined than they are in the actual galaxy itself. However, there is strong evidence for ejection of gas and dust from near the centre of NGC 253 and there is moderate (tentative) evidence that the spiral region of NGC 253 is so active that it is ejecting gas and dust at right angles.

I had been under the impression that the dust clouds seen high above the galactic plane, in Milky Way images, are just ordinary giant molecular clouds (star forming regions containing quiet formation of low mass stars), but the large vertical extent of the dust clouds above the Milky Way plane does make me wonder if there is not some kind of ejection mechanism pushing the gas and dust outwards.

Best regards,
Robert

Originally Posted by madbadgalaxyman

The textbooks tend to say that a lot of the "very high up" material seen in images of the Milky Way is not actually very far from the plane, in physical distance, and that much of it only looks like it extends a long way out at right angles to the plane.... because it is nearby in space.
(e.g. the Ophiuchus and Lupus clouds)
However, it is pretty easy for spiral arms and even for the overall thin disk structure of a galaxy to be bent out of and away from its plane, by gravitational forces; remarkable numbers of galaxies have bends and warps and tilts in their plane.
So one cannot exclude the idea that the material far above the plane has got there through tidal forces.

As for the gas and dust complexes, I am sure that a few supernovae could blow them "sky high" above the principal plane.

Thanks Robert. In my image I certainly get the idea that the dust is being kicked high up by something. It almost seems to be being blown away and up from the centre bulge. Perhaps the output of all those stars close together makes for a strong combined solar wind.

Its possible its closer to us than it appears but looking at many galaxy images dust that is irregular isn't that uncommon so I tend to believe what we are seeing there is the sideways view of the Milky Way and the dust is being kicked up and away by some stream of radiation.

Greg.

[madbadgalaxyman (Robert)]

This one seems to me to be the best candidate for a genuine Vertical Dust Chimney on Greg's exposure:



If that is the NGC 6231 / Scorpius OB1 complex in the mid-plane of the Milky Way beneath the dust chimney, then this would be a plausible candidate for the source of one or more energetic events that could project dust and gas far above the plane of the Milky Way; this is a very large concentration of supermassive stars, and it could well have hosted one or more supernovae.