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ASTRO: 29 hours of High QE imaging of M27



 
 
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  #1  
Old August 5th 07, 01:57 AM posted to alt.binaries.pictures.astro
Richard Crisp[_1_]
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Posts: 985
Default ASTRO: 29 hours of High QE imaging of M27

I began this over the July 4th holiday and took my most recent data last
night, Aug 3

This is 12 hours of [SII], 10 hours of [OIII] and 7 hours of Halpha

It was shot using the TK1024 powered FLI Dream Machine camera (1kx1k @24x24
micron pixels at about 85% QE) using 4.5nm Cust Sci emission line filters on
the Stinger 450 classical cassegrain using a Lumicon Giant Easy Guider with
focal reducer for a focal length of 3366mm (~f/7.1). You just can't beat
those TK1024 chips and other such similar chips for going really deep. The
combination of the high QE, the deep wells and the big pixels, it really
makes for a fast camera that is just wonderful for deep emission line
imaging with tight filters.

I am intrigued by the sulfur channel data (red in this palette). I am seeing
detail I've not seen previously in shallower exposures.

I may take some more exposures, but am getting a bit tired of this object
after shooting it for the past month.

http://www.narrowbandimaging.com/m27...2hao3_page.htm







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  #2  
Old August 5th 07, 02:28 AM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
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Posts: 3,085
Default ASTRO: 29 hours of High QE imaging of M27



Richard Crisp wrote:
I began this over the July 4th holiday and took my most recent data last
night, Aug 3

This is 12 hours of [SII], 10 hours of [OIII] and 7 hours of Halpha

It was shot using the TK1024 powered FLI Dream Machine camera (1kx1k @24x24
micron pixels at about 85% QE) using 4.5nm Cust Sci emission line filters on
the Stinger 450 classical cassegrain using a Lumicon Giant Easy Guider with
focal reducer for a focal length of 3366mm (~f/7.1). You just can't beat
those TK1024 chips and other such similar chips for going really deep. The
combination of the high QE, the deep wells and the big pixels, it really
makes for a fast camera that is just wonderful for deep emission line
imaging with tight filters.

I am intrigued by the sulfur channel data (red in this palette). I am seeing
detail I've not seen previously in shallower exposures.

I may take some more exposures, but am getting a bit tired of this object
after shooting it for the past month.

http://www.narrowbandimaging.com/m27...2hao3_page.htm


Looks like most of the outer shell is oxygen with a bit of helium and
not much sulfur. Interesting how it is somewhat segregated into areas
like that. You have had a lot more good nights than I have! I get an
hour here and there of sort of clear with horrid seeing. Not a summer
for imaging so far anyway.

Rick


--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

  #3  
Old August 5th 07, 02:45 AM posted to alt.binaries.pictures.astro
Richard Crisp[_1_]
external usenet poster
 
Posts: 985
Default ASTRO: 29 hours of High QE imaging of M27

No helium filter used for this image Rick

Sulfur, Hydrogen and Oxygen

it has been very difficult to get any nights the past month. Maybe two or
three hours on a good night, perhaps a single 20 minute on a not so good
night.

it takes a long time on the wallclock to log nearly 30 hour of exposure this
time of year

the really perverse thing is that the seeing has been excellent over the top
of the fog but the fog is between me and the skies....




"Rick Johnson" wrote in message
...


Richard Crisp wrote:
I began this over the July 4th holiday and took my most recent data last
night, Aug 3

This is 12 hours of [SII], 10 hours of [OIII] and 7 hours of Halpha

It was shot using the TK1024 powered FLI Dream Machine camera (1kx1k
@24x24 micron pixels at about 85% QE) using 4.5nm Cust Sci emission line
filters on the Stinger 450 classical cassegrain using a Lumicon Giant
Easy Guider with focal reducer for a focal length of 3366mm (~f/7.1). You
just can't beat those TK1024 chips and other such similar chips for going
really deep. The combination of the high QE, the deep wells and the big
pixels, it really makes for a fast camera that is just wonderful for deep
emission line imaging with tight filters.

I am intrigued by the sulfur channel data (red in this palette). I am
seeing detail I've not seen previously in shallower exposures.

I may take some more exposures, but am getting a bit tired of this object
after shooting it for the past month.

http://www.narrowbandimaging.com/m27...2hao3_page.htm


Looks like most of the outer shell is oxygen with a bit of helium and not
much sulfur. Interesting how it is somewhat segregated into areas like
that. You have had a lot more good nights than I have! I get an hour
here and there of sort of clear with horrid seeing. Not a summer for
imaging so far anyway.

Rick


--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".



  #4  
Old August 5th 07, 04:37 AM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
external usenet poster
 
Posts: 3,085
Default ASTRO: 29 hours of High QE imaging of M27

I meant hydrogen, I was talking to someone while typing. I can't do two
things at once any more.

No fog here so far but it is forecast for tomorrow.
I get my best seeing with hazy skies, ever with clear ones.
Rick

Richard Crisp wrote:

No helium filter used for this image Rick

Sulfur, Hydrogen and Oxygen

it has been very difficult to get any nights the past month. Maybe two or
three hours on a good night, perhaps a single 20 minute on a not so good
night.

it takes a long time on the wallclock to log nearly 30 hour of exposure this
time of year

the really perverse thing is that the seeing has been excellent over the top
of the fog but the fog is between me and the skies....




"Rick Johnson" wrote in message
...


Richard Crisp wrote:

I began this over the July 4th holiday and took my most recent data last
night, Aug 3

This is 12 hours of [SII], 10 hours of [OIII] and 7 hours of Halpha

It was shot using the TK1024 powered FLI Dream Machine camera (1kx1k
@24x24 micron pixels at about 85% QE) using 4.5nm Cust Sci emission line
filters on the Stinger 450 classical cassegrain using a Lumicon Giant
Easy Guider with focal reducer for a focal length of 3366mm (~f/7.1). You
just can't beat those TK1024 chips and other such similar chips for going
really deep. The combination of the high QE, the deep wells and the big
pixels, it really makes for a fast camera that is just wonderful for deep
emission line imaging with tight filters.

I am intrigued by the sulfur channel data (red in this palette). I am
seeing detail I've not seen previously in shallower exposures.

I may take some more exposures, but am getting a bit tired of this object
after shooting it for the past month.

http://www.narrowbandimaging.com/m27...2hao3_page.htm


Looks like most of the outer shell is oxygen with a bit of helium and not
much sulfur. Interesting how it is somewhat segregated into areas like
that. You have had a lot more good nights than I have! I get an hour
here and there of sort of clear with horrid seeing. Not a summer for
imaging so far anyway.

Rick


--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".






  #5  
Old August 6th 07, 04:40 PM posted to alt.binaries.pictures.astro
Stefan Lilge
external usenet poster
 
Posts: 2,269
Default ASTRO: 29 hours of High QE imaging of M27

Great image Richard.
The long exposure time certainly paid off. As you mention the sulfur
channel, do you have that channel as a separate image somewhere? I know how
M27 looks in Halpha and OIII, but I don't have a clue about SII.

Stefan

"Richard Crisp" schrieb im Newsbeitrag
...
I began this over the July 4th holiday and took my most recent data last
night, Aug 3

This is 12 hours of [SII], 10 hours of [OIII] and 7 hours of Halpha

It was shot using the TK1024 powered FLI Dream Machine camera (1kx1k
@24x24 micron pixels at about 85% QE) using 4.5nm Cust Sci emission line
filters on the Stinger 450 classical cassegrain using a Lumicon Giant Easy
Guider with focal reducer for a focal length of 3366mm (~f/7.1). You just
can't beat those TK1024 chips and other such similar chips for going
really deep. The combination of the high QE, the deep wells and the big
pixels, it really makes for a fast camera that is just wonderful for deep
emission line imaging with tight filters.

I am intrigued by the sulfur channel data (red in this palette). I am
seeing detail I've not seen previously in shallower exposures.

I may take some more exposures, but am getting a bit tired of this object
after shooting it for the past month.

http://www.narrowbandimaging.com/m27...2hao3_page.htm







  #6  
Old August 6th 07, 08:11 PM posted to alt.binaries.pictures.astro
Kev[_2_]
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Posts: 40
Default ASTRO: 29 hours of High QE imaging of M27


"Stefan Lilge" wrote in message
...
Great image Richard.
The long exposure time certainly paid off. As you mention the sulfur
channel, do you have that channel as a separate image somewhere? I know
how M27 looks in Halpha and OIII, but I don't have a clue about SII.


Actually I would love to see all 3 separate to see how it composes.

Anyway

Great work Richard

Kev


  #7  
Old August 8th 07, 06:53 AM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
external usenet poster
 
Posts: 3,085
Default ASTRO: 29 hours of High QE imaging of M27



Kev wrote:
"Stefan Lilge" wrote in message
...

Great image Richard.
The long exposure time certainly paid off. As you mention the sulfur
channel, do you have that channel as a separate image somewhere? I know
how M27 looks in Halpha and OIII, but I don't have a clue about SII.



Actually I would love to see all 3 separate to see how it composes.

Anyway

Great work Richard

Kev


If you have Photoshop or another image processing program that allows
you to see the RGB color planes of a color image then you already have
the separate images. Richard doesn't make a synthetic Luminosity image
so the data you want is there in his photos. The red plane is Sulfur,
the green hydrogen and blue oxygen in this photo. He used a different
palette for the Veil shot he posted. I've been told the free GIMP will
do this. I don't have it so can't verify that.

Rick

--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

  #8  
Old August 8th 07, 10:30 AM posted to alt.binaries.pictures.astro
Stefan Lilge
external usenet poster
 
Posts: 2,269
Default ASTRO: 29 hours of High QE imaging of M27

Thanks for the hint Rick. I did a "copy and paste" to AstroArt and split it
into RGB there. The SII is really cool, quite different to Ha and OIII.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
...


Kev wrote:
"Stefan Lilge" wrote in message
...

Great image Richard.
The long exposure time certainly paid off. As you mention the sulfur
channel, do you have that channel as a separate image somewhere? I know
how M27 looks in Halpha and OIII, but I don't have a clue about SII.



Actually I would love to see all 3 separate to see how it composes.

Anyway

Great work Richard

Kev


If you have Photoshop or another image processing program that allows you
to see the RGB color planes of a color image then you already have the
separate images. Richard doesn't make a synthetic Luminosity image so the
data you want is there in his photos. The red plane is Sulfur, the green
hydrogen and blue oxygen in this photo. He used a different palette for
the Veil shot he posted. I've been told the free GIMP will do this. I
don't have it so can't verify that.

Rick

--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".


 




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