ASTRO: 12 Hours Helix in Ha/[OIII]/HeII

this was shot binned 2x2 over the past two evenings at the ranch under about
70% moon

The Helium II (468nm) is faint but there. five hours exposure binned 2x2
brought a blob out by the central star. that makes sense because it is a
very high ionization potential so it takes a hot central star like a white
dwarf in a PNe to light it up.


Palette (wavelength ordered) : Red - Ha, Green - [OIII], Blue - HeII

all subexposures were 2x2 binned and were 15 minutes long

it has a decidely different feel to it imaged this way

Equipment used: AP180EDT f/9 and FLI ML4022 operated at -26C

mount: AP1200GTO

http://www.narrowbandimaging.com/ngc...o3he2_page.htm

Richard Crisp wrote:
this was shot binned 2x2 over the past two evenings at the ranch under about
70% moon

The Helium II (468nm) is faint but there. five hours exposure binned 2x2
brought a blob out by the central star. that makes sense because it is a
very high ionization potential so it takes a hot central star like a white
dwarf in a PNe to light it up.


Palette (wavelength ordered) : Red - Ha, Green - [OIII], Blue - HeII

all subexposures were 2x2 binned and were 15 minutes long

it has a decidely different feel to it imaged this way

Equipment used: AP180EDT f/9 and FLI ML4022 operated at -26C

mount: AP1200GTO

http://www.narrowbandimaging.com/ngc...o3he2_page.htm




Boy, that sure does change the color scheme of it! Looked at it in PS
to see the blue channel. What blue channel? After 5 hours only the
core shows and weakly at that. Interesting. Really need a hot central
star to do much in that line!

Rick

I added the Helium II channel to my webpage Rick

have another look

http://www.narrowbandimaging.com/ngc...o3he2_page.htm




"Rick Johnson" wrote in message
. com...
Richard Crisp wrote:
this was shot binned 2x2 over the past two evenings at the ranch under
about
70% moon

The Helium II (468nm) is faint but there. five hours exposure binned 2x2
brought a blob out by the central star. that makes sense because it is a
very high ionization potential so it takes a hot central star like a
white
dwarf in a PNe to light it up.


Palette (wavelength ordered) : Red - Ha, Green - [OIII], Blue - HeII

all subexposures were 2x2 binned and were 15 minutes long

it has a decidely different feel to it imaged this way

Equipment used: AP180EDT f/9 and FLI ML4022 operated at -26C

mount: AP1200GTO

http://www.narrowbandimaging.com/ngc...o3he2_page.htm




Boy, that sure does change the color scheme of it! Looked at it in PS
to see the blue channel. What blue channel? After 5 hours only the
core shows and weakly at that. Interesting. Really need a hot central
star to do much in that line!

Rick

Great image Richard. The radial rays make it look a bit like travelling at
the speed of light.

Stefan

"Richard Crisp" schrieb im Newsbeitrag
m...
this was shot binned 2x2 over the past two evenings at the ranch under
about 70% moon

The Helium II (468nm) is faint but there. five hours exposure binned 2x2
brought a blob out by the central star. that makes sense because it is a
very high ionization potential so it takes a hot central star like a white
dwarf in a PNe to light it up.


Palette (wavelength ordered) : Red - Ha, Green - [OIII], Blue - HeII

all subexposures were 2x2 binned and were 15 minutes long

it has a decidely different feel to it imaged this way

Equipment used: AP180EDT f/9 and FLI ML4022 operated at -26C

mount: AP1200GTO

http://www.narrowbandimaging.com/ngc...o3he2_page.htm