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Stevec35
25-05-2019, 10:47 AM
This is a Hubble palette version of the bipolar nebula NGC 6164-65. Just about everyone images this thing in RGB colours so I thought I would see how it looked in SHO. The total imaging time was about 16 hours.

Cheers

Steve

http://members.pcug.org.au/~stevec/ngc6165_STXL6303_RC14.htm

Peter Ward
25-05-2019, 11:05 AM
Wow. Very impressive resolution. Very pleasing to the eye colour palette.
Nice one steve :thumbsup:

Stevec35
25-05-2019, 01:29 PM
Thanks Peter. I wondered about the palette but it looked okay in the end.

Andy01
25-05-2019, 02:53 PM
Loving the colour palatte - reckon you could go even deeper on the outer shell though! :D

Stevec35
25-05-2019, 04:35 PM
Thanks Andy. I'm still experimenting with it so maybe I'll come up with something better.

atalas
25-05-2019, 04:39 PM
Looks fantastic Steve:thumbsup:whats all the brown in the backround?is that dust?

Stevec35
25-05-2019, 05:11 PM
Thanks Louie. I'm not sure - probably a mixture of gas and dust.

strongmanmike
25-05-2019, 05:48 PM
Nice looking shot of a perennial favourite Steve :thumbsup:...no dust in a narrowband emission line filter image BTW ;)

Mike

Stevec35
25-05-2019, 07:22 PM
Of course - a stupid mistake on my part. I'm having a bad week.

traveller
25-05-2019, 08:55 PM
Wow, great details. Well done!

Stevec35
25-05-2019, 09:49 PM
Thanks

Placidus
26-05-2019, 07:08 AM
The outer ring looks wonderful. The impression of many overlapping and three-dimensional blow-outs, where the shock front encounters places where it can escape freely. Reminiscent of brain coral, perhaps.

gregbradley
26-05-2019, 09:01 AM
Beautiful. The blues and yellows are fabulous. An elegant image.

Greg.

Stevec35
26-05-2019, 10:57 AM
Thanks guys. Always appreciate your comments.

atalas
26-05-2019, 09:02 PM
What about all the dust that shows up in Ha....might It not be that?

multiweb
26-05-2019, 10:02 PM
Nice close up Steve. :thumbsup:

strongmanmike
26-05-2019, 10:40 PM
H-alpha is a specific deep red light with a wavelength of 656.28 nm and emitted when a hydrogen electron falls from the third to second lowest energy level. Interstellar dust is mostly carbon, silicon and oxygen and not made of isolated Hydrogen atoms, so does not emit any Ha. Sometimes Hydrogen can be mixed in with dust but it is the Hydrogen that is emitting the light if excited and not the dust, so a Ha image is showing the distribution of the free Hydrogen in the image and not the dust.

We do sometimes hear people describing H-alpha images as showing "lots of dust"... but they don't :thumbsup:

Mike

Stevec35
26-05-2019, 10:44 PM
Thanks Marc

Atmos
26-05-2019, 10:53 PM
Very nice Steve, you’ve managed to capture the full OIII ring which has some pretty faint parts. Nicely captured :thumbsup:

atalas
26-05-2019, 10:55 PM
Yes thank you....understood Mike:thumbsup:

Stevec35
27-05-2019, 10:32 AM
Thanks Colin