#1
|
|||
|
|||
ASTRO: Jones 1
Not to be confused with Jones Emberson 1. I was surprised to find
nearly half the images turned up by Google that were labeled Jones 1 were really Jones Emberson 1. Google itself often also labeled the image incorrectly even though it was right at the website but throwing those out left nearly half the images being the wrong planetary. I've also seen it called the Horseshoe Nebula. Indeed it looks like one in short LRGB exposures like mine but longer exposure time and the use of an OIII filter brings out that it really is a full oval with no open end, just a fainter end. I see two blobs below it. The red one shows in H alpha images taken with 3 nm filters showing it is H alpha not NII light. I'm not sure if it is related to the nebula. There's another blob to the west (right) of the H alpha blob that doesn't show on narrow band images I looked at. Is it part of Jones 1? I find nothing on it. In looking I find there's a rather odd quasar in the image. I've pointed it out in the second image. Per NED it is a bit over 10 billion light years from us. What's odd is that it isn't blue like so many are. I originally though it to be the blue star just above it but the location was wrong and it doesn't match the Simbad photometric data. That shows it gets brighter the longer the wavelength. In blue light it is 19th magnitude, 18th in red, 17th in J band IR and 16th in K band IR per Simbad. Oddly Simbad says it is 20th in V (green) but gives no source. 14" LX200R @ f/10, L=6x10' RGB=2x10', 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
|
|||
|
|||
ASTRO: Jones 1
nice job Rick!
taking it at a lower image scale sure brightens it up compared to my image I took two years ago at 0.41"/pixel in that case it was all Halpha and [OIII] that I used I have also shot JE1 as well as J1 http://www.narrowbandimaging.com/jon...ao3o3_page.htm http://www.narrowbandimaging.com/pk164_page.htm http://www.narrowbandimaging.com/pk1...c_2x2_page.htm to me that blob off to the left in my image is very intriguing. Loaded with Halpha as faint planetaries go.... "Rick Johnson" wrote in message ster.com... Not to be confused with Jones Emberson 1. I was surprised to find nearly half the images turned up by Google that were labeled Jones 1 were really Jones Emberson 1. Google itself often also labeled the image incorrectly even though it was right at the website but throwing those out left nearly half the images being the wrong planetary. I've also seen it called the Horseshoe Nebula. Indeed it looks like one in short LRGB exposures like mine but longer exposure time and the use of an OIII filter brings out that it really is a full oval with no open end, just a fainter end. I see two blobs below it. The red one shows in H alpha images taken with 3 nm filters showing it is H alpha not NII light. I'm not sure if it is related to the nebula. There's another blob to the west (right) of the H alpha blob that doesn't show on narrow band images I looked at. Is it part of Jones 1? I find nothing on it. In looking I find there's a rather odd quasar in the image. I've pointed it out in the second image. Per NED it is a bit over 10 billion light years from us. What's odd is that it isn't blue like so many are. I originally though it to be the blue star just above it but the location was wrong and it doesn't match the Simbad photometric data. That shows it gets brighter the longer the wavelength. In blue light it is 19th magnitude, 18th in red, 17th in J band IR and 16th in K band IR per Simbad. Oddly Simbad says it is 20th in V (green) but gives no source. 14" LX200R @ f/10, L=6x10' RGB=2x10', 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
|
|||
|
|||
ASTRO: Jones 1
Beautiful picture Rick. The central star has a nice colour contrast to the
two stars beneath it. Stefan "Rick Johnson" schrieb im Newsbeitrag ster.com... Not to be confused with Jones Emberson 1. I was surprised to find nearly half the images turned up by Google that were labeled Jones 1 were really Jones Emberson 1. Google itself often also labeled the image incorrectly even though it was right at the website but throwing those out left nearly half the images being the wrong planetary. I've also seen it called the Horseshoe Nebula. Indeed it looks like one in short LRGB exposures like mine but longer exposure time and the use of an OIII filter brings out that it really is a full oval with no open end, just a fainter end. I see two blobs below it. The red one shows in H alpha images taken with 3 nm filters showing it is H alpha not NII light. I'm not sure if it is related to the nebula. There's another blob to the west (right) of the H alpha blob that doesn't show on narrow band images I looked at. Is it part of Jones 1? I find nothing on it. In looking I find there's a rather odd quasar in the image. I've pointed it out in the second image. Per NED it is a bit over 10 billion light years from us. What's odd is that it isn't blue like so many are. I originally though it to be the blue star just above it but the location was wrong and it doesn't match the Simbad photometric data. That shows it gets brighter the longer the wavelength. In blue light it is 19th magnitude, 18th in red, 17th in J band IR and 16th in K band IR per Simbad. Oddly Simbad says it is 20th in V (green) but gives no source. 14" LX200R @ f/10, L=6x10' RGB=2x10', 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". |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
ASTRO: Jones-Emberson 1 or PK 164+31.1 | Rick Johnson[_2_] | Astro Pictures | 11 | December 22nd 07 01:05 PM |
ASTRO: Jones 1 at 31 hours | Richard Crisp | Astro Pictures | 4 | November 26th 06 10:41 PM |
ASTRO: Jones 1 at 26.5 hours | Richard Crisp | Astro Pictures | 1 | November 22nd 06 06:24 PM |
ASTRO: Jones Emberson 1 (PK164+31.1) Planetary Nebula in [NII], Ha and [OIII] | Richard Crisp | Astronomy Misc | 0 | February 10th 04 04:06 PM |
ASTRO: Jones-Emberson 1 Planetary Nebula (PK164+31.1) | Richard Crisp | CCD Imaging | 0 | February 8th 04 12:05 PM |