Re: NGC 371 & NGC 346
Here it is. A slightly deeper image.
G15, 26 Sept 2008 14:24 - 15:15 UTC + yesterdays subs
4 x Lum 180sec bin 1 (L)
3 x Ha, 1 x 180 sec + 2 x 300 sec bin 1 (R + L 40% transparency)
4 x Green 180 sec bin 2 (G)
3 x U 1 x 180 sec + 2 x 300 sec bin 2 (B)
1 x I 180 sec bin 2 (overlay @ 25% transparency)
The star forming region of NGC 346 (Cataloged as N66) also appears to contain a large population of infant stars. A mere 3 to 5 million years old and not yet burning hydrogen in their cores, the infant stars are scattered about the embedded star cluster. Better seen in this animation, a comparison of Ha and IR images
I am unsure as to whether the "striations" seen in the Ha image are outflows (jets) from the star forming regions (H-H objects?), or if there is some other cause for the apparent difference in luminosity/density. Is there an astronomer in the house?
Ed: Well how about that! Here I am musing about NGC 346 and it appears in the next days APOD. Not my image of course - nowhere near good enough - but a hubble image, which shows that cluster of young stars very well.
G15, 26 Sept 2008 14:24 - 15:15 UTC + yesterdays subs
4 x Lum 180sec bin 1 (L)
3 x Ha, 1 x 180 sec + 2 x 300 sec bin 1 (R + L 40% transparency)
4 x Green 180 sec bin 2 (G)
3 x U 1 x 180 sec + 2 x 300 sec bin 2 (B)
1 x I 180 sec bin 2 (overlay @ 25% transparency)
The star forming region of NGC 346 (Cataloged as N66) also appears to contain a large population of infant stars. A mere 3 to 5 million years old and not yet burning hydrogen in their cores, the infant stars are scattered about the embedded star cluster. Better seen in this animation, a comparison of Ha and IR images
I am unsure as to whether the "striations" seen in the Ha image are outflows (jets) from the star forming regions (H-H objects?), or if there is some other cause for the apparent difference in luminosity/density. Is there an astronomer in the house?
Ed: Well how about that! Here I am musing about NGC 346 and it appears in the next days APOD. Not my image of course - nowhere near good enough - but a hubble image, which shows that cluster of young stars very well.
Attachments:
NGC371_NGC346_deeper.jpg