He-211, IC 4628 and a new Eta Carina image

[tornado33]

Hi all.
With a short time of darkness before moonrise I tried for a new object, He2-111, a planetary nebula that continues the saga of deep southern objects being neglected by astro catalogues. Its is NOT in Uranometria at all. The other thing is that it is so close to Alpha Centauri that if I moved it to one side, I could fit it AND He2-111 in the same field. Its just to the west of Alpha Centauri. Heres the image http://www.users.on.net/~josiah/baad...111cropped.jpg Ironically I had a satellite go through BOTH images (580 sec ISO 400 and 330 ISO 800 with Baader UHCS filter) When I took the first image I thought Id mistakenly imaged the Ant Nebula, as it looks very similar (but not as diffuse), but its in Norma. I cant understand why He2-111 isnt more well known considering its proximity to Alpha centauri, finding it manually was little trouble, with a map printed from Star Atlas Pro http://www.skylab.com.au/ Its far more detailed than my Unarometria Vol 2 (Southern sky) atlas.
Heres another shot of Eta Carina , with the Baader UHCS filter, its a 950 and 860 ISO 800 shot stacked and processed in Photoshop and Noiseware.
http://www.users.on.net/~josiah/baad...aadersmall.jpg It was getting lowish in the SW and rising moon starting to interfere.
I also tried for IC 4628 not expecting too much but was surprised to see it clearly visible in the unprocessed image as shown on the camera LCD, so I took another longer shot at a lower ISO and here it is http://www.users.on.net/~josiah/baad...aadersmall.jpg
1x 220sec ISO 1600 and 1x 630 sec ISO 800 stacked, processed in Photoshop and Noiseware. The moon was above the horizon by the time Id finished.
Nebula filters have revoloutionalised my astro imaging of emmission nebulae, its the next best thing to having a modified 300D camera. The reds in particular stand out, even in the unprocessed off the camera shots. The important thing with the filters is to treble the exposure times you would normally use, the aim is to get to the sky fog background (Histogram peak about 1/4 to 1/3 way along.)
Scott.

[h0ughy (David)]

well done mate. Got those moon shots tonight. I'm glad you stayed at home or else I wouldn't have seen those great shots

here is the moon http://www.iceinspace.com.au/forum/s...ead.php?t=3059

[RAJAH235]

Once again, Scott, you have excelled yourself. That Eta Carina shot is simply (3D) stunning. Thanks again. L.

[Orion]

Terrific Scott, I love the shot of Eta Carina.

[seeker372011 (Narayan)]

Originally Posted by tornado33

Hi all.
I cant understand why He2-111 isnt more well known considering its proximity to Alpha centauri,.

Yes these southern Planetaries seem a bit neglected dont they

another planetary that is not well known at all in the neighbourhood is He 2-90..

(I imaged this from Kulnura and couldnt find much about it anywhere..finally emailed Doug Synder for information)

I posted the image (a widefield) here some time ago

http://www.iceinspace.com.au/forum/s...ead.php?t=2532

[Crash Nebula]

Absolutley stunning. Good Work!

[iceman (Mike)]

The Eta shot is stunning, nice work Scott.

[ErwinvdVelden]

Hi Scott,

Great that you found a way around light pollution and screwing open (up?) camera's. The results are surprisingly good!

I never had heard of that planetary either, but I'll have a look at it at Astrofest.

I experimented with the unmodiefied D70 and a Japanese LPR filter a year ago, and found out that the colour balance of the RAW was surprisingly neutral, compared to the green stuff that you get with an unfiltered unmodified shot. But since that filter had only 50% transmission at H-alpha I had to increase the exposure time fourfold, and back then the Baader UHC filter wasn't available. So I decided to screw up.. uh open my camera.

Sofar I haven't had the urge to make deepsky images with the modified D70 from my light polluted home site, but when that day comes I'll certainly consider that UHC filter.

Cheers,

[tornado33]

Thanks, ppl, yes I love imaging obscure stuff thats little known elsewhere.
Nice shot Seeker I must look more around that area too
Erwin, I reckon you will love the results a modified camera AND a nebula filter will give together, even from the city.
Scott

[ving (David)]

hmm... how bright is that he2-111? and what size is it?
sounds like a good observing challenge for me