by Ann » Sat Jun 08, 2024 5:56 pm
prabhuastrophotography wrote: ↑Sat Jun 08, 2024 2:23 pm
Ann wrote: ↑Fri Jun 07, 2024 6:33 pm
I am acutely aware that 9,999 people out of 10,000 will stare in amazement at today's picture of the Dolphin Nebula and not give a hoot about the appearance of the ionizing star. Or maybe we are talking about 99,999,999 out of 100,000,000 people. Just one of all these people will be unhappy.
Well, I am the one dissenting voice. To me it is incredibly important that EZ Canis Majoris, the Wolf Rayet star ionizing the Dolphin Nebula, is not only intrinsically blue (like all WR stars), but that the light that reaches us from this star, after traversing 5,000 light-years and encountering innumerable dust particles, is still blue, or at least bluish, or at least bluer than the light from Vega that has come to us from 25 light-years.
Vega over Milky Way Marcin Rosadziński.png
Blue Vega over Milky Way. EZ CMa is bluer. Credit: Marcin Rosadziński
So I tried to find another picture that did justice to the colors of the two important stars in and near the Dolphin Ndebula, and I really recommend this one by David Viaene:
EZ Canis Majoris and Sharpless 308 Davy Viaene.png
True-color EZ CMa and true-color omi1 CMa and the Dolphin Nebula
by David Viaene.
So, yeah. I want blue EZ CMa and yellow omicron 1 CMa of the Dolphin Nebula to look like they do in David Viaene's image.
But take heart, Prabhu Kutti! Remember all the people applauding your image of this most remarkable dolphin in the sky.
Ann
I usually take RGB stars separately and replace the narrowband stars which are mostly red/magenta, but for this I did not capture RGB stars, this image is a combination of only two narrowband emission, Ha and Oiii because of this the colors are not accurate.
I take it you are the photographer behind the Dolphin Head Nebula APOD? Thank you so much for weighing in here.
When it comes to my criticism of your picture, I said that 99,999 people out of 100,000 will like it. I mean it. I have never met anyone who cares about color the way I do, so I am, frankly, not representative of the people who will look at your image.
Your image isn't about color, but about structure. I do understand that, so I should have kept my mouth shut. The thing is that color is so incredibly important to me that I can't stop talking about it, and in particular, I can't stop talking about the color blue.
So let me say to you now that your picture brings out the structure of the Dolphin Head Nebula beautifully well, and clearly better than the photographer whose image I praised (and still love) because of his accurate star colors.
Thank you for your contribution to the Astronomy Picture of the Day site, and good luck in the future!
Ann
[quote=prabhuastrophotography post_id=339551 time=1717856591 user_id=147979]
[quote=Ann post_id=339525 time=1717785208 user_id=129702]
I am acutely aware that 9,999 people out of 10,000 will stare in amazement at today's picture of the Dolphin Nebula and not give a hoot about the appearance of the ionizing star. Or maybe we are talking about 99,999,999 out of 100,000,000 people. Just one of all these people will be unhappy.
[float=left][img2]https://media.wired.com/photos/65e8810cb8b2544099643c72/1:1/w_1888,h_1888,c_limit/dsadas.jpg[/img2][/float][float=right][img2]https://static2.bigstockphoto.com/7/3/2/large2/237938317.jpg[/img2][/float]
[clear][/clear]
Well, I am the one dissenting voice. To me it is incredibly important that EZ Canis Majoris, the Wolf Rayet star ionizing the Dolphin Nebula, is not only intrinsically blue (like all WR stars), but that the light that reaches us from this star, after traversing 5,000 light-years and encountering innumerable dust particles, is still blue, or at least bluish, or at least bluer than the light from Vega that has come to us from 25 light-years.
[float=left]Vega over Milky Way Marcin Rosadziński.png[c][size=85][color=#0040FF]Blue Vega over Milky Way. EZ CMa is bluer. Credit: Marcin Rosadziński[/color][/size][/c][/float][float=right][img3="Red-looking EZ CMa (center of the Dolphin Nebula) makes Ann a dull girl. Credit: Prabhu Kutti"]https://apod.nasa.gov/apod/image/2406/DolphinNebulaHOO_1024.jpg[/img3][/float]
[clear][/clear]
So I tried to find another picture that did justice to the colors of the two important stars in and near the Dolphin Ndebula, and I really recommend this one by David Viaene:
[float=left]EZ Canis Majoris and Sharpless 308 Davy Viaene.png[c][size=85][color=#0040FF]True-color EZ CMa and true-color omi1 CMa and the Dolphin Nebula
by David Viaene.[/color][/size][/c][/float]
[clear][/clear]
So, yeah. I want blue EZ CMa and yellow omicron 1 CMa of the Dolphin Nebula to look like they do in David Viaene's image.
But take heart, Prabhu Kutti! Remember all the people applauding your image of this most remarkable dolphin in the sky.
Ann
[/quote]
I usually take RGB stars separately and replace the narrowband stars which are mostly red/magenta, but for this I did not capture RGB stars, this image is a combination of only two narrowband emission, Ha and Oiii because of this the colors are not accurate.
[/quote]
I take it you are the photographer behind the Dolphin Head Nebula APOD? Thank you so much for weighing in here.
When it comes to my criticism of your picture, I said that 99,999 people out of 100,000 will like it. I mean it. I have never met anyone who cares about color the way I do, so I am, frankly, not representative of the people who will look at your image.
Your image isn't about color, but about structure. I do understand that, so I should have kept my mouth shut. The thing is that color is so incredibly important to me that I can't stop talking about it, and in particular, I can't stop talking about the color blue.
So let me say to you now that your picture brings out the structure of the Dolphin Head Nebula beautifully well, and clearly better than the photographer whose image I praised (and still love) because of his accurate star colors.
Thank you for your contribution to the Astronomy Picture of the Day site, and good luck in the future!
Ann