90 mins on Corona Australis at F2.8

[tornado33]

Hi
Did my deepest image of the Corona Australis area tonight with the mighty 300mm f2.8 flourite lens from Bert. Never before have I done such a long imaging run with such a fast lens, 90 mins, consisting of 5 minute subs

18x5 mins ISO400. 2 inch LPS filter in back of lens, modded 350D camera. Guided with Q guider on the cheap Orion 80mm shorttube guidescope. Done with object transiting, best possible position for imaging. It was quite easy sitting back in a chair manually guiding on the notebook pc with guidestar on a virtual recticle, greatly magnified.

The small scale image does not do it justice, so heres a 1 mb version (http://www.iceinspace.com.au/uploads/coronaaustralia18x5minsiso400lps350 d300mmf2.8_filteredbig.jpg). Even that is slightly downsized.

Of course from a dark sky site deeper images can be obtained, but from a site where the LMC is only just naked eye, its not too bad :)
Scott

[Hagar]

I Like it Scott. You have captured a lot of detail. Focus looks good, guiding good and colour looks good. Well done.

[strongmanmike]

Great shot Paul! It's an amazing region and to think you got this from Newcastle :eyepop: That lens is great.

We must go imaging together under dark skies sometime :thumbsup:

Mike

[Liz]

Wow, sooooo many stars, and a satellite, beautiful :)

[iceman]

It's just floating in space.. love the dusty clouds. Nice work Scott.

[Alchemy]

youre so right scot the small one doesnt do it justice, the big one has a bazillion stars, the dust shows out nicely.

[theodog]

That's a great shot Scott.
I think it would make a nice poster print for the wall.
Well done.;)

[drmorbius]

Excellent... well done!

[tornado33]

Thanks all. This is why I love doing astro imaging, I can look up to a milky grey sky, with only the brighter parts of the milky way visible, yet go deep enough to show dark nebulae like brown smoke across the stars :)
Scott

[Garyh]

Beautiful work Scott!
I am always supprised at what can be done even from LP areas!
:thumbsup:

[tornado33]

Thanks
I just now performed a fairly strong star size reduction on it. It makes some stars look un naturally coloured but gee it brings out the dust. With such a starry background the dust is lost among them, but reduce the stars and the dust stands out, the lower right looks almost like a bow shock. Does this nebula qualify as a Cometary Globule, streaming back under stellar winds from the core of our galaxy?

What could this 300mm lens do under a dark sky and three hours of data :)

[Deeno]

Whoa!!
Looks almost 3D

[strongmanmike]

Fantabulistic!

Looks like a plane flew past Corona Australis? :doh:

Mike

[AlexN]

Thats brilliant... Very very sharp!

[tornado33]

Thanks
Yep it was a plane, can see the port and starboard nav lights
Scott

[multiweb]

Very cool shot. I like the first one though coz the stars are so bright so the dust looks real dark against it. Maybe if you blend in the two pics you'll get the best of both. Loads of dust on top of bright stars.

[alan meehan]

well done scott.....awesome

[2020BC]

wonderful, Scott.

[jase]

Excellent, excellent. This could easily rival data acquired from a dedicated astro cam. I'm amazed how well the dusty neb has come out - good processing. Very well done Scott. Keep up the fantastic work.

[winensky]

Beautiful work. Such detail and depth over the entire field! Superb!