Coal Sack Mosaic

[avandonk]

Only two panels so not all of it. Same exposures for both.

Details
Canon 5DH, Canon 300mm F2.8L at f3.5 with external aperture and lens hood extension. ISO 1600. Hutech LPR filter. Fridge at -11.0C.
Exposures 20x(15s, 30s, 60s and 120s). Usual HDR method. No enhancement.

Small image FoV 9.6 X 4.5 degrees 7MB

http://d1355990.i49.quadrahosting.com.au/2010_04/MOS_CSack_S.jpg

There is definite detail in the dust clouds.

Bert

[PeterM]

My god, it's full of stars!
Superb.
PeterM.

[jjjnettie]

One can study this region for ages.
Lovely work Bert.

[multiweb]

That is so cool. :thumbsup: There's a little red nebula (http://www.multiweb.com.au/astro/ngc4755_20090714_f.jpg)next to the jewel box that I picked up on one of my shot centered on alpha X. I though at the time it was just an internal reflection.

[strongmanmike]

Yes, it's hardly a sack of coal... more like a bag of star dust :thumbsup:

Mike

[duncan]

WONDERFUL IMAGE!!! So full of detail. More than enough to keep one occupied for hours just picking it all out.
Cheers,
Duncan:thumbsup:

[mill]

The coalsack is a dark region devoid of stars Bert, You debunked the myth :(

Bloody well done :thumbsup::thumbsup:

[Bassnut]

Top work Bert, nice stitching and star colour.

One thing tho, far to many effing stars, sheesh, FAR to many.

[gregbradley]

Fabulous and very interesting image Bert.

Greg.

[avandonk]

Glad you all like it. Here is the panorama version with the Dark Doodad. It was a fluke that they almost lined up as the Doodad was from last week.

FoV 15.73 X 4.25 degrees. 6MB

http://d1355990.i49.quadrahosting.com.au/2010_04/MOS_CSack_DD.jpg

Bert

[duncan]

Spectacular Bert. Heaps of stuff in there for future reference. Would love to get some close ups of some of the things in it.
Cheers,
Duncan:thumbsup:

[avandonk]

All those faint stars and dust folks are below noise level with the sensor at normal ambient temperature. It is the HDR processing that shows both bright stars and very dim ones in the same crappy eight bit JPG and the fridge keeps the noise to a managable level. You should see the 340 MB TIFF. The HDR process also gives me the colours of all the stars as nothing is saturated.

[telecasterguru]

Bert,

Amazing work, did you count how many stars there are in the image?

Frank

[starfinder]

Very, very impressive. Lots of deep sky interest there. Keep up the good work. :) Russ.

[kinetic]

Lovely stuff Bert.:thumbsup:
Nettie got quite a bit of detail in this shot of hers
just for comparsion:
http://www.iceinspace.com.au/forum/attachment_browse.php?a=60521

Steve

[trent_julie]

Thats excellent Bert,

You seem to be doing a fair amount of imaging of late, just wondering when you will of finish the southern sky survey you seem to be working on?

Trent,

P.S have you put a tap onto your super cold beer/camera cooler yet?

[TrevorW]

Very fine job Bert

[bartman]

Great pic!

Could you (or someone) identify some of the features on the pic as for some reason I cant orientae/ identify the starssss.
Is the blue star center top Acrux? Double star?

Thanks Bartman

[David Fitz-Henr]

Yes, detail in the dust clouds and masses of stars! Will you be taking more shots to complete the mosaic?