Bassnut
02-01-2015, 05:57 PM
Hi Guys
This image has been very difficult to produce and ended up with too many artifacts in a vain attempt to make a pretty pic. There are good reasons why other examples are rare and ordinary, its dim. The 40min subs are mostly buried in noise hence the need for 72hrs. Im not sure now if its worth the bother, this sort of caper. Target choice needs more research in the future :P. Click here for big (http://fredsastro.smugmug.com/Photography/Astrophotography-1/i-4scjcHF/A).
N70 in Ha,SII,HA,OIII mapped as LRGB. Ha 63 42hrs, SII 17hrs and OIII 26 hrs Ha 40min subs bin2, SII and OIII 40min subs bin2.
This is a borrowed description
Henize 70 (N70, DEM L301) is part of the Large Magellanic Cloud in the southern constellation of Dorado about 170,000 light years distant. Henize 70 is a superbubble in which fast, energetic stellar winds from massive, hot stars (OB association LH 114) clear out a bubble from the surrounding interstellar medium. You can see a group of hot blue stars near the center of the bubble. The energy released into the bubble ionizes elements, such as hydrogen, oxygen and sulfur, and causes them to glow. It has also been suggested (Skelton et al., Pub Astro Soc Pac, III, 465-481, 1999) that supernova explosions within the last million years also contributed to the structure of the nebula. The nebula is about 300 light years across.
This image has been very difficult to produce and ended up with too many artifacts in a vain attempt to make a pretty pic. There are good reasons why other examples are rare and ordinary, its dim. The 40min subs are mostly buried in noise hence the need for 72hrs. Im not sure now if its worth the bother, this sort of caper. Target choice needs more research in the future :P. Click here for big (http://fredsastro.smugmug.com/Photography/Astrophotography-1/i-4scjcHF/A).
N70 in Ha,SII,HA,OIII mapped as LRGB. Ha 63 42hrs, SII 17hrs and OIII 26 hrs Ha 40min subs bin2, SII and OIII 40min subs bin2.
This is a borrowed description
Henize 70 (N70, DEM L301) is part of the Large Magellanic Cloud in the southern constellation of Dorado about 170,000 light years distant. Henize 70 is a superbubble in which fast, energetic stellar winds from massive, hot stars (OB association LH 114) clear out a bubble from the surrounding interstellar medium. You can see a group of hot blue stars near the center of the bubble. The energy released into the bubble ionizes elements, such as hydrogen, oxygen and sulfur, and causes them to glow. It has also been suggested (Skelton et al., Pub Astro Soc Pac, III, 465-481, 1999) that supernova explosions within the last million years also contributed to the structure of the nebula. The nebula is about 300 light years across.