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Astro: The Fly, NGC 1931
In late July I ran IC 417 the "Spider Nebula" which had sat unprocessed
on my drive for months due to nasty gradients from a nearby star I didn't know how to deal with at the time. It is part of the Spider and the Fly nebula complex. I finally got a chance to image the Fly part. They are too far apart for me to mosaic the two. I'd need several in the middle. For those that didn't keep the Spider image it is at: http://www.spacebanter.com/attachmen...tid=2093&stc=1. Note the Spider image has 90 minutes of H alpha data blended in. None was used for the fly below. Both are part of the same huge molecular cloud. Each is lit by the intense radiation of the star clusters forming in their respective parts of the cloud. NGC 1931 is the Fly. The spider was an emission nebula but the Fly is both emission (red) and reflective (blue). Some parts are lit by stars now quite hot enough or whose light isn't strong enough to cause the hydrogen to ionize so we see the blue of a reflection nebula. The entire complex, imaged with a wide angle telescope is at: http://apod.nasa.gov/apod/ap061027.html 14" LX200R, L=4x10' binned 2x2, RGB=2x10' binned 3x3, STL-11000XM, Paramount ME 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". |
#2
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Astro: The Fly, NGC 1931
On of the best images I have seen of this object close up.
Joe "Rick Johnson" wrote in message ster.com... In late July I ran IC 417 the "Spider Nebula" which had sat unprocessed on my drive for months due to nasty gradients from a nearby star I didn't know how to deal with at the time. It is part of the Spider and the Fly nebula complex. I finally got a chance to image the Fly part. They are too far apart for me to mosaic the two. I'd need several in the middle. For those that didn't keep the Spider image it is at: http://www.spacebanter.com/attachmen...tid=2093&stc=1. Note the Spider image has 90 minutes of H alpha data blended in. None was used for the fly below. Both are part of the same huge molecular cloud. Each is lit by the intense radiation of the star clusters forming in their respective parts of the cloud. NGC 1931 is the Fly. The spider was an emission nebula but the Fly is both emission (red) and reflective (blue). Some parts are lit by stars now quite hot enough or whose light isn't strong enough to cause the hydrogen to ionize so we see the blue of a reflection nebula. The entire complex, imaged with a wide angle telescope is at: http://apod.nasa.gov/apod/ap061027.html 14" LX200R, L=4x10' binned 2x2, RGB=2x10' binned 3x3, STL-11000XM, Paramount ME 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
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Astro: The Fly, NGC 1931
Amazing result Rick. Very deep with beautiful colours. I have attached my
own version just to show how much better your image is than a "standard" image. Stefan "Rick Johnson" schrieb im Newsbeitrag ster.com... In late July I ran IC 417 the "Spider Nebula" which had sat unprocessed on my drive for months due to nasty gradients from a nearby star I didn't know how to deal with at the time. It is part of the Spider and the Fly nebula complex. I finally got a chance to image the Fly part. They are too far apart for me to mosaic the two. I'd need several in the middle. For those that didn't keep the Spider image it is at: http://www.spacebanter.com/attachmen...tid=2093&stc=1. Note the Spider image has 90 minutes of H alpha data blended in. None was used for the fly below. Both are part of the same huge molecular cloud. Each is lit by the intense radiation of the star clusters forming in their respective parts of the cloud. NGC 1931 is the Fly. The spider was an emission nebula but the Fly is both emission (red) and reflective (blue). Some parts are lit by stars now quite hot enough or whose light isn't strong enough to cause the hydrogen to ionize so we see the blue of a reflection nebula. The entire complex, imaged with a wide angle telescope is at: http://apod.nasa.gov/apod/ap061027.html 14" LX200R, L=4x10' binned 2x2, RGB=2x10' binned 3x3, STL-11000XM, Paramount ME 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
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Astro: The Fly, NGC 1931
Wide band from in Berlin I'm amazed you got what you did. This guy
isn't as bright as I expected. The spider only has an IC number yet seems brighter to me than this guy with its "upscale" NGC number. I was thinking I should have added some H-alpha to it but think that would unbalance the reflective part so didn't take any. Rick Stefan Lilge wrote: Amazing result Rick. Very deep with beautiful colours. I have attached my own version just to show how much better your image is than a "standard" image. Stefan "Rick Johnson" schrieb im Newsbeitrag ster.com... In late July I ran IC 417 the "Spider Nebula" which had sat unprocessed on my drive for months due to nasty gradients from a nearby star I didn't know how to deal with at the time. It is part of the Spider and the Fly nebula complex. I finally got a chance to image the Fly part. They are too far apart for me to mosaic the two. I'd need several in the middle. For those that didn't keep the Spider image it is at: http://www.spacebanter.com/attachmen...tid=2093&stc=1. Note the Spider image has 90 minutes of H alpha data blended in. None was used for the fly below. Both are part of the same huge molecular cloud. Each is lit by the intense radiation of the star clusters forming in their respective parts of the cloud. NGC 1931 is the Fly. The spider was an emission nebula but the Fly is both emission (red) and reflective (blue). Some parts are lit by stars now quite hot enough or whose light isn't strong enough to cause the hydrogen to ionize so we see the blue of a reflection nebula. The entire complex, imaged with a wide angle telescope is at: http://apod.nasa.gov/apod/ap061027.html 14" LX200R, L=4x10' binned 2x2, RGB=2x10' binned 3x3, STL-11000XM, Paramount ME 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
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Astro: The Fly, NGC 1931
Wide band from in Berlin I'm amazed you got what you did. This guy
isn't as bright as I expected. The spider only has an IC number yet seems brighter to me than this guy with its "upscale" NGC number. I was thinking I should have added some H-alpha to it but think that would unbalance the reflective part so didn't take any. Rick Stefan Lilge wrote: Amazing result Rick. Very deep with beautiful colours. I have attached my own version just to show how much better your image is than a "standard" image. Stefan "Rick Johnson" schrieb im Newsbeitrag ster.com... In late July I ran IC 417 the "Spider Nebula" which had sat unprocessed on my drive for months due to nasty gradients from a nearby star I didn't know how to deal with at the time. It is part of the Spider and the Fly nebula complex. I finally got a chance to image the Fly part. They are too far apart for me to mosaic the two. I'd need several in the middle. For those that didn't keep the Spider image it is at: http://www.spacebanter.com/attachmen...tid=2093&stc=1. Note the Spider image has 90 minutes of H alpha data blended in. None was used for the fly below. Both are part of the same huge molecular cloud. Each is lit by the intense radiation of the star clusters forming in their respective parts of the cloud. NGC 1931 is the Fly. The spider was an emission nebula but the Fly is both emission (red) and reflective (blue). Some parts are lit by stars now quite hot enough or whose light isn't strong enough to cause the hydrogen to ionize so we see the blue of a reflection nebula. The entire complex, imaged with a wide angle telescope is at: http://apod.nasa.gov/apod/ap061027.html 14" LX200R, L=4x10' binned 2x2, RGB=2x10' binned 3x3, STL-11000XM, Paramount ME 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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