Pismis 24-1 a huge star

[strongmanmike]

I was trawling through the internet as one does at times and came across the Hubble image of NGC 6357 in Scorpio. In the centre of this nebula there is a cluster of stars, a member of which was thought to have a mass of 200 - 300X the sun :eyepop:. Close scrutiny by HST has however revealed that it is indeed a double star so each member is only of the order of 100 - 150 solar masses, still...imagine being 1 AU from these stars :scared:

I knew I had taken a shot of this area just this season so I zoooooooomed in and found them - HERE (http://www.pbase.com/strongmanmike2002/image/129977473/original) - this field is only a few arc min across.

You can follow the links under the image to read more about these big stars.

The original full frame nebula image is HERE (http://www.pbase.com/strongmanmike2002/ngc_6357)


Mike

[h0ughy]

thats a very interesting find of information Mike (and showing off your data to boot ;) ) - could you please tell me how to pronounce the name of the star?

[strongmanmike]

Pretend you are a primary school kid in New Zealand and you are asking your teacher if you can go to the Toilet :whistle:

...or then again that would be Pusmus 24-1 :question:

Mike

[mill]

Aha!! Like this?: Can i go for a (beeeep) miss? :rofl::rofl:

[strongmanmike]

...I don't really know if that's the correct way of saying it but sounds good enough to me..I wasn't taking the pus either :P

[DavidTrap]

Well I guess something has to provide the energy for all that nebulosity to glow...

Like the phonetics lesson too!

DT

[Alchemy]

Some old images must have a host of unrecognized features, this months Aus sky and telescope has a feature on the soap bubble nebula near the crescent nebula, how many imagers must be looking at their old images realizing it was there to be discovered but they missed it.

[SkyViking]

What a great close-up Mike, there's lots of detail in there. And the HST image is a beauty, I haven't seen that one before. Thanks for sharing.

[strongmanmike]

Cheers Clive

Yeh, going back to old data is something everyone should do once in a while I recon....I just do it more often :D... I haven't taken any new data in 2 months :sadeyes:



No problemo Rollo :thumbsup:

Once again the Starfire shows it's class (not much to do with me :shrug:) from a miserly 1300mm FL.



Cheers Dave

Even 150 solar masses is unbelievably amazing huh?

Mike

[David Fitz-Henr]

Good stuff Mike - great to have interesting info / images to exercise one's imagination ...

[Tom Davis]

That star doesn't look that big to me.... ;)

Nice shot!!

-Tom

[Tom Davis]

Sorry, but it is.....this is vdB18 in Perseus. You know, I am
determined to document all of these reflection nebulae and complete my
vdB image catalog.
http://www.tvdavisastropics.com/astroimages-1_00008e.htm (http://www.google.com/url?sa=D&q=http://www.tvdavisastropics.com/astroimages-1_00008e.htm&usg=AFQjCNFXl6mI0y2oYRPeFDfw__xJstb 9Gw)


Once again, here are two views of it:

Narrow:
http://www.tvdavisastropics.com/astroimages-1_0000da.htm (http://www.google.com/url?sa=D&q=http://www.tvdavisastropics.com/astroimages-1_0000da.htm&usg=AFQjCNEH6yCYNHcY4YnQq2rb9zzXp2e tRQ)

Wide:
http://www.tvdavisastropics.com/astroimages-1_0000db.htm (http://www.google.com/url?sa=D&q=http://www.tvdavisastropics.com/astroimages-1_0000db.htm&usg=AFQjCNGTzBBx7Ipd4aoEqz1GoKY1Xog MDg)



I hope these are not too boring. Bear with me, it may only be a few
more YEARS until I get them all -- :lol: --> :sad:

-Tom

[Tom Davis]

OK, so I'm an idiot! I placed my new post into Mike's thread.

(Hey what a good Idea. That way I can steal Mike's thunder!!!! Hey, like that will ever happen :rolleyes:)

Again, sorry.

-Tom, the idiot.

[strongmanmike]

Hey you won't get any complaints from me - honoured to share this thread with you Tom!

Mike the Idiot :D

That is another lovely subtle dusty image.

Boy if my Orion Optics AG12 performs as well as your ASA N12 does I will be VERY happy :thumbsup: (I still haven't seen large files from you though :question:)...gotta ask too, you have an AP RH on site now, your ASA 12" F3.6 corrected newtonian appears to have bucked the ASA trend and performs so well, the only difference will be the lack of defraction spikes aaaaaaaaand US$18K out of your pocket..:shrug:..what am I missing?

Mike

[Tom Davis]

Winter has set in. The ASA is now in its case. I have the STL attached to the RHA but no clear skies yet. My FLI is still in Oz so I am waiting on multiple different fronts, as it were. You haven't missed anything.

-Tom

[strongmanmike]

I meant...no doubt the AP is a beautifull piece of work for sure but what is the difference between the two OTA's in real terms..?

Mike

[Tom Davis]

Not a lot real difference, I think. No collimation issues with the RHA, No mirror degradation with the RHA, no star spikes with the RHA. Bigger corrected FOV with the RHA for use with bigger CCD chips. The ASA is much lighter. The ASA causes star spikes and sometimes spikes are needed to "bling" up an image.

However, it is really cool to have an Astro-Physics scope with serial number 001!!!!!!!!:D What a collectors item!

-Tom

[strongmanmike]

Kind of a more tricked up and stable version then really - yep excellent. You can always stretch string across the objective for diff spikes :D

Serial No 1....Ooooh yeh!!! :thumbsup:

[TrevorW]

try syaing trhat 5 time fast when your drunk at a star party

[Paul Haese]

Interesting comparison Mike. The view from 1 Au would be well 80% of the sky would be this really bright thing that burns your retina and you would need factor 1 million to prevent skin cancer.

Have you considered doing a full narrow band on this target? (can't believe I am saying that)

[strongmanmike]

She sells stretched string for diffraction spikes by the sea shore :question:

[TrevorW]

stars shine stars sparkle such a serendiptist scintillatingly sight

and the list shall we go on

[tornado33]

Great resolution for 6 inches of aperature, squeezing every bit from it :)

[strongmanmike]

He, he :thumbsup: once again though it is the direct comparison with a superior kind of map shall we say, that puts your own image in more perspective and kind of reveals more in it.

Cheers mate.

Mike

[strongmanmike]

Sunburn city!

Yes considered it but too late now :doh:...how come you had trouble saying that..?

Mike

[RB]

Great comparison Mike.
Just unimaginable the size of some of these stars.



:lol:

[DavidTrap]

Have you seen APOD 22.11.10?

DT

[strongmanmike]

Yeh saw that Dave..ah ha beat'em to it :thumbsup: