|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
ASTRO: Sh2-126 The heaven's arrow?
This is the last in my short break from Arp galaxies. I've taken most
of the summer ones, not galaxy season with the Milky Way dominating the sky. So I have to find other objects to tide me over or get wide angle system. I really needed one for this object. It also needed a lot of H alpha time but didn't get any. Sh2-126 is a large HII/Reflection Nebula with lots of dust in Lacerta. It contains an interesting reflection nebula centered on the variable star V0375 Lac that varies from 14.24 to 12.94 magnitude. It appears elongated in my image. This appears due to the reflection nebula as if I only look at the brightest pixels it does appear round. NED and SIMBAD also show another object at the same coordinates, MRK 0914. NED lists it as the same object and considers it an UV Excess Source. SIMBAD shows it as a different object with exactly the same position and as a galaxy. Could this galaxy designation come from the oval appearance? A bit SW of its position is a bright area that does appear galaxy like but nothing is listed for that position. SIMBAD identifies the reflection nebula as GN 22.32.5. Simbad also shows several HH regions in the reflection nebula, one of which also shares the same coordinates as the star and the Markaryan object, HH 398. It's enough to make my brain hurt. I find little on the distance to this object. One source say 600 parsecs or about 2000 light years. That's probably a very large "about". I wanted to get some H alpha to go with this but weather never cooperated and I soon forgot about it until I went to process it. By then it was long gone from the sky. The image was taken July 28, 2009 UTC. 14" LX200R @ f/10, L=8x10' RGB=3x10'x3, 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: Sh2-126 The heaven's arrow?
You are really good at finding off the beaten path targets Rick
This is no different I like this one "Rick Johnson" wrote in message . com... This is the last in my short break from Arp galaxies. I've taken most of the summer ones, not galaxy season with the Milky Way dominating the sky. So I have to find other objects to tide me over or get wide angle system. I really needed one for this object. It also needed a lot of H alpha time but didn't get any. Sh2-126 is a large HII/Reflection Nebula with lots of dust in Lacerta. It contains an interesting reflection nebula centered on the variable star V0375 Lac that varies from 14.24 to 12.94 magnitude. It appears elongated in my image. This appears due to the reflection nebula as if I only look at the brightest pixels it does appear round. NED and SIMBAD also show another object at the same coordinates, MRK 0914. NED lists it as the same object and considers it an UV Excess Source. SIMBAD shows it as a different object with exactly the same position and as a galaxy. Could this galaxy designation come from the oval appearance? A bit SW of its position is a bright area that does appear galaxy like but nothing is listed for that position. SIMBAD identifies the reflection nebula as GN 22.32.5. Simbad also shows several HH regions in the reflection nebula, one of which also shares the same coordinates as the star and the Markaryan object, HH 398. It's enough to make my brain hurt. I find little on the distance to this object. One source say 600 parsecs or about 2000 light years. That's probably a very large "about". I wanted to get some H alpha to go with this but weather never cooperated and I soon forgot about it until I went to process it. By then it was long gone from the sky. The image was taken July 28, 2009 UTC. 14" LX200R @ f/10, L=8x10' RGB=3x10'x3, 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: Sh2-126 The heaven's arrow?
This one isn't all that uncommonly imaged but it is uncommon to do it
LRGB. In narrow band the extensive dust and reflection elements are lost so it looks very different. In some I can match stars but not nebula. If not for the stars I'd think they were entirely different fields. This one is far larger than my field and there's lots of other stuff all around so might be a good target for your humongous chip and refractor but will need lots and lots of time. Rick On 4/1/2010 8:13 AM, Richard Crisp wrote: You are really good at finding off the beaten path targets Rick This is no different I like this one "Rick wrote in message . com... This is the last in my short break from Arp galaxies. I've taken most of the summer ones, not galaxy season with the Milky Way dominating the sky. So I have to find other objects to tide me over or get wide angle system. I really needed one for this object. It also needed a lot of H alpha time but didn't get any. Sh2-126 is a large HII/Reflection Nebula with lots of dust in Lacerta. It contains an interesting reflection nebula centered on the variable star V0375 Lac that varies from 14.24 to 12.94 magnitude. It appears elongated in my image. This appears due to the reflection nebula as if I only look at the brightest pixels it does appear round. NED and SIMBAD also show another object at the same coordinates, MRK 0914. NED lists it as the same object and considers it an UV Excess Source. SIMBAD shows it as a different object with exactly the same position and as a galaxy. Could this galaxy designation come from the oval appearance? A bit SW of its position is a bright area that does appear galaxy like but nothing is listed for that position. SIMBAD identifies the reflection nebula as GN 22.32.5. Simbad also shows several HH regions in the reflection nebula, one of which also shares the same coordinates as the star and the Markaryan object, HH 398. It's enough to make my brain hurt. I find little on the distance to this object. One source say 600 parsecs or about 2000 light years. That's probably a very large "about". I wanted to get some H alpha to go with this but weather never cooperated and I soon forgot about it until I went to process it. By then it was long gone from the sky. The image was taken July 28, 2009 UTC. 14" LX200R @ f/10, L=8x10' RGB=3x10'x3, 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
|
|||
|
|||
ASTRO: Sh2-126 The heaven's arrow?
"Rick Johnson" wrote in message . com... This one isn't all that uncommonly imaged but it is uncommon to do it LRGB. In narrow band the extensive dust and reflection elements are lost so it looks very different. In some I can match stars but not nebula. If not for the stars I'd think they were entirely different fields. This one is far larger than my field and there's lots of other stuff all around so might be a good target for your humongous chip and refractor but will need lots and lots of time. I need to convince Kodak to redesign the 39Mpixel to have microlenses and no metal light shield they ought to be able to have the same QE as the KAF3200ME with that bad boy. If they did it would be the bee's knees for astro-imaging |
#5
|
|||
|
|||
ASTRO: Sh2-126 The heaven's arrow?
Wow, that's a strange object. There is some very unusual detail in it. Makes
me wonder what caused these structures. Stefan "Rick Johnson" schrieb im Newsbeitrag . com... This is the last in my short break from Arp galaxies. I've taken most of the summer ones, not galaxy season with the Milky Way dominating the sky. So I have to find other objects to tide me over or get wide angle system. I really needed one for this object. It also needed a lot of H alpha time but didn't get any. Sh2-126 is a large HII/Reflection Nebula with lots of dust in Lacerta. It contains an interesting reflection nebula centered on the variable star V0375 Lac that varies from 14.24 to 12.94 magnitude. It appears elongated in my image. This appears due to the reflection nebula as if I only look at the brightest pixels it does appear round. NED and SIMBAD also show another object at the same coordinates, MRK 0914. NED lists it as the same object and considers it an UV Excess Source. SIMBAD shows it as a different object with exactly the same position and as a galaxy. Could this galaxy designation come from the oval appearance? A bit SW of its position is a bright area that does appear galaxy like but nothing is listed for that position. SIMBAD identifies the reflection nebula as GN 22.32.5. Simbad also shows several HH regions in the reflection nebula, one of which also shares the same coordinates as the star and the Markaryan object, HH 398. It's enough to make my brain hurt. I find little on the distance to this object. One source say 600 parsecs or about 2000 light years. That's probably a very large "about". I wanted to get some H alpha to go with this but weather never cooperated and I soon forgot about it until I went to process it. By then it was long gone from the sky. The image was taken July 28, 2009 UTC. 14" LX200R @ f/10, L=8x10' RGB=3x10'x3, 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 |
Black Arrow cancellation | [email protected] | History | 9 | March 15th 09 06:01 AM |
Does the Arrow of Time Point in Different Directions? | Double-A | Misc | 5 | June 12th 06 12:44 PM |
~ * Tis Heaven's All Ruling power, this hour ... | Twittering One | Misc | 23 | August 31st 05 09:56 AM |
Canadian Arrow finds an angel | Jim Davis | Policy | 4 | May 19th 05 01:13 AM |
AVRO ARROW IS ALIVE IN CANADA | dug88 | Misc | 1 | March 27th 05 04:11 AM |