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The Outer Limits Galaxy
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Sep 30, 2023 00:46:54   #
Ballard Loc: Grass Valley, California
 
Retired CPO wrote:
Thanks very much, Ballard. I'll check out the video!


You are quite welcome. If you have any questions feel free to ask.

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Sep 30, 2023 01:17:19   #
Retired CPO Loc: Travel full time in an RV
 
Ballard wrote:
You are quite welcome. If you have any questions feel free to ask.


Will do, thank you!!

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Sep 30, 2023 02:38:27   #
Fly cessna Loc: Hemet ,Ca
 
I remember looking at the milky way in the summer evenings in Colfax

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Sep 30, 2023 06:37:18   #
ELNikkor
 
Excellent photos! (Wonder if "they" have similar photos of our galaxy? : )

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Sep 30, 2023 07:21:47   #
raymondh Loc: Walker, MI
 

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Sep 30, 2023 07:28:51   #
nimbushopper Loc: Tampa, FL
 
Well done!

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Sep 30, 2023 07:40:53   #
Kevin.M Loc: Forked River, NJ
 
Ballard wrote:
The images below are of NGC 891 nicknamed the Outer Limits Galaxy since it was one of the Galaxies that was shown in the end credits of the 1960's show called "The Outer Limits" (It was one of my favorite shows back then).
NGC 891 is just over 27 million light years away and can be found in the constellation of Andromeda and shines at magnitude 10.84. This edge on spiral galaxy is thought to look like our galaxy from an edge on perspective and is approximately the same size as the Milky Way. On close inspection you can find several much more distant galaxies in the images. However only PGC 9042 at magnitude 16.23 shows up in my charts and can be found towards the top of the image about 1/2 way between the left edge and center of the image. The other many more faint galaxies can be spotted as elongated blobs of light and or are more fuzzy than the images of the stars.

The first image was taken using Luminance, Red Green and Blue filters. The second image added in an Image taken using a 5 nm Narrow band Hydrogren Alpha filter using the NBRGBCombination routine, which rebalances the color after adding in the Ha data (The NB stands for Narrow band, the RGB stands for Red, Green and Blue). Note: In the second image the little red areas along the dust line in galaxy that are brought out with the Hydrogen Alpha data (You will probably need to use double down to zoom in enough to see these red areas). These red dots reveal locations of active star formation. In both images the background star brightness was reduced to not distract from the image of the Galaxy.

All questions comments and suggestions are welcome.

For those interested
All images were taken using a 16" Schmidt Cassegrain telescope at a 4064mm focal length (F10). The camera used was a monochromatic ASI 6200MM pro cooled camera. The camera images were taken a -12 C with a gain of 100, with binning set to 1x1.

Luminance 91 subframes each 180 seconds long
Red 37 subframes each 240 seconds long
Green 42 subframes each 240 seconds long
Blue 37 subframes each 240 seconds long
Ha 66 subframes each 500 seconds long
The images below are of NGC 891 nicknamed the Oute... (show quote)


Wow! That’s amazing! Thanks for sharing the technique you used.

Reply
 
 
Sep 30, 2023 08:31:59   #
JR69 Loc: Wolverine Michigan
 
Ballard wrote:
The images below are of NGC 891 nicknamed the Outer Limits Galaxy since it was one of the Galaxies that was shown in the end credits of the 1960's show called "The Outer Limits" (It was one of my favorite shows back then).
NGC 891 is just over 27 million light years away and can be found in the constellation of Andromeda and shines at magnitude 10.84. This edge on spiral galaxy is thought to look like our galaxy from an edge on perspective and is approximately the same size as the Milky Way. On close inspection you can find several much more distant galaxies in the images. However only PGC 9042 at magnitude 16.23 shows up in my charts and can be found towards the top of the image about 1/2 way between the left edge and center of the image. The other many more faint galaxies can be spotted as elongated blobs of light and or are more fuzzy than the images of the stars.

The first image was taken using Luminance, Red Green and Blue filters. The second image added in an Image taken using a 5 nm Narrow band Hydrogren Alpha filter using the NBRGBCombination routine, which rebalances the color after adding in the Ha data (The NB stands for Narrow band, the RGB stands for Red, Green and Blue). Note: In the second image the little red areas along the dust line in galaxy that are brought out with the Hydrogen Alpha data (You will probably need to use double down to zoom in enough to see these red areas). These red dots reveal locations of active star formation. In both images the background star brightness was reduced to not distract from the image of the Galaxy.

All questions comments and suggestions are welcome.

For those interested
All images were taken using a 16" Schmidt Cassegrain telescope at a 4064mm focal length (F10). The camera used was a monochromatic ASI 6200MM pro cooled camera. The camera images were taken a -12 C with a gain of 100, with binning set to 1x1.

Luminance 91 subframes each 180 seconds long
Red 37 subframes each 240 seconds long
Green 42 subframes each 240 seconds long
Blue 37 subframes each 240 seconds long
Ha 66 subframes each 500 seconds long
The images below are of NGC 891 nicknamed the Oute... (show quote)


Ballard
To be honest I did not understand much of your explanation of the images. However they are IMPRESSIVE !!~

Reply
Sep 30, 2023 11:20:13   #
lamiaceae Loc: San Luis Obispo County, CA
 
Ballard wrote:
The images below are of NGC 891 nicknamed the Outer Limits Galaxy since it was one of the Galaxies that was shown in the end credits of the 1960's show called "The Outer Limits" (It was one of my favorite shows back then).
NGC 891 is just over 27 million light years away and can be found in the constellation of Andromeda and shines at magnitude 10.84. This edge on spiral galaxy is thought to look like our galaxy from an edge on perspective and is approximately the same size as the Milky Way. On close inspection you can find several much more distant galaxies in the images. However only PGC 9042 at magnitude 16.23 shows up in my charts and can be found towards the top of the image about 1/2 way between the left edge and center of the image. The other many more faint galaxies can be spotted as elongated blobs of light and or are more fuzzy than the images of the stars.

The first image was taken using Luminance, Red Green and Blue filters. The second image added in an Image taken using a 5 nm Narrow band Hydrogren Alpha filter using the NBRGBCombination routine, which rebalances the color after adding in the Ha data (The NB stands for Narrow band, the RGB stands for Red, Green and Blue). Note: In the second image the little red areas along the dust line in galaxy that are brought out with the Hydrogen Alpha data (You will probably need to use double down to zoom in enough to see these red areas). These red dots reveal locations of active star formation. In both images the background star brightness was reduced to not distract from the image of the Galaxy.

All questions comments and suggestions are welcome.

For those interested
All images were taken using a 16" Schmidt Cassegrain telescope at a 4064mm focal length (F10). The camera used was a monochromatic ASI 6200MM pro cooled camera. The camera images were taken a -12 C with a gain of 100, with binning set to 1x1.

Luminance 91 subframes each 180 seconds long
Red 37 subframes each 240 seconds long
Green 42 subframes each 240 seconds long
Blue 37 subframes each 240 seconds long
Ha 66 subframes each 500 seconds long
The images below are of NGC 891 nicknamed the Oute... (show quote)


Ballard, those two images are just beautiful. You are so skilled and patient at capturing and processing such images. NGC891 looks like a UFO. I guess all similar spiral galaxies do. The most I have done with astrophotography minus the telescope or automated tracking is photographing a few comets with just a (film) camera. For Hale-Bopp I made a rig to manually track the comet from the Joshua Tree NP. I went out there twice and took images both after sunset and before sunrise weeks apart. Or and more recently I did with a photo class I was taking do a circular Star Trail photo. That was done with a digital camera and composite of many short exposures over the period of say 50 minutes. I should have gone to a few hours but there was a huge wind storm that night and I was afraid my tripod and camera might move. I had the tripod weighted down, but... As it was a friend's set-up did blow over and her Canon 5D was damaged. She later replaced it with a Canon 5D mk III.

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Sep 30, 2023 12:49:09   #
Ballard Loc: Grass Valley, California
 
Fly cessna wrote:
I remember looking at the milky way in the summer evenings in Colfax


Yep you can still see the summer milky way from Grass Valley also. However the sky brightness has slowly been increasing over the years.

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Sep 30, 2023 12:52:13   #
Ballard Loc: Grass Valley, California
 
ELNikkor wrote:
Excellent photos! (Wonder if "they" have similar photos of our galaxy? : )


Hi ELNikkor
Thanks for checking out the photos of "The Outer Limits" Galaxy and for the comment. I wouldn't be surprised if someone there has taken pictures of our galaxy. Of course their images would be what our galaxy looked like almost 30 million years ago.

Reply
 
 
Sep 30, 2023 12:53:03   #
Ballard Loc: Grass Valley, California
 
raymondh wrote:


Hi raymondh
Thanks for viewing the photos of NGC 891 and for the Thumbs up.

Reply
Sep 30, 2023 12:53:42   #
Ballard Loc: Grass Valley, California
 
nimbushopper wrote:
Well done!


Hi nimbushopper
Thanks for checking out the shots of NGC 891 and for the comment.

Reply
Sep 30, 2023 12:59:26   #
Ballard Loc: Grass Valley, California
 
Kevin.M wrote:
Wow! That’s amazing! Thanks for sharing the technique you used.


Hi Kevin.M
Thank you for viewing the images of NGC 891 and for the comment. I mentioned to Retired CPO that I gave a talk to my astronomy club on using a monochromatic camera for astrophotography and that talk was put onto youtube.
If you are interested that video can be seen at.

https://www.youtube.com/watch?v=Q3dQhwbVjEQ

Reply
Sep 30, 2023 13:08:38   #
Ballard Loc: Grass Valley, California
 
JR69 wrote:
Ballard
To be honest I did not understand much of your explanation of the images. However they are IMPRESSIVE !!~


Hi JR69
Thanks for viewing the images of NGC 891 and for the comment. If you have any questions that I can clarify feel free to ask. Recently I gave a talk to my astronomy club on using a monochromatic camera and it was later put onto youtube. If you are interested it can be seen at

https://www.youtube.com/watch?v=Q3dQhwbVjEQ

Reply
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