Thors Helmet in bicolour slight repro

gregbradley · #1 09-12-2009, 10:20 PM

Nearly full moon last weekend but otherwise nice skies and good seeing.

I got out the narrowband filters and this one is a bicolour (Ha red + O111 blue plus (Ha+O111)/2 for green.

The O111 was shot 2x2 mainly with some 1x1 to see if I was missing out on much resolution. I seemed to get the lost resolution back through using deconvolution possibly thanks to the brighter image (higher signal).

Ha 90 O111 90.

TEC180mm fluorite triplet, Tak NJP mount, FLI ML8300, Astrodon 5nm Ha and O111 filters. From my dark site observatory.

http://www.pbase.com/gregbradley/image/120140813

I plan to produce another version of this as I have several hours of LRGB on this object from earlier in the year to combine with it.

Greg,

strongmanmike (Michael) · #2 09-12-2009, 10:24 PM

Some excellent details in the helmet and wings Greg, good use of your imaging time too

Mike

TrevorW · #3 09-12-2009, 10:35 PM

nice greg

Paul Haese · #4 09-12-2009, 11:16 PM

I like the detail in the helmet (bubble) and the overall colouring is quite nice.

Probably needs more data to clear out the artifacts in the back ground.

This object is on my list to do with the RC. I might have to take a look at it with the OIII blended with blue, Ha blended with red, and green. I am keen to see more data on the image you have here.

drjcaron (Jim Caron) · #5 10-12-2009, 02:50 AM

Hi Greg, really nice work. I tried an additional decon on the image and produced an improved result. There were artifacts due to the jpeg compression, but it shows that even more blur can be removed If you tweak your parameters on your decon, using the original data, you should get a show-stopper.
Best Regards,
Jim C

multiweb (Marc) · #6 10-12-2009, 09:43 AM

Great shot Greg!

The details in the bubble are very sharp. You can almost see it expanding. Ha/Oiii blends always bring those nice red and blue hues. Works well on a lot of DSOs. Top work.

PS: Where did you get clear skies? I'll have to come and plonk my rig next to yours next time you image.

RB (Andrew) · #7 10-12-2009, 10:10 AM

Beautiful detail in the bubble Greg !

renormalised (Carl) · #8 10-12-2009, 11:14 AM

Great shot there, Greg. Lots of detail in the helmet

gregbradley · #9 10-12-2009, 12:43 PM

Quote:

Originally Posted by strongmanmike

Some excellent details in the helmet and wings Greg, good use of your imaging time too

Thanks Mike. I was happy with it. Jase gave me a good tip that this object is strongest in O111 much like Vela SNR is.

Mike

Quote:

Originally Posted by TrevorW

nice greg

Thanks Trev.

Quote:

Originally Posted by Paul Haese

I like the detail in the helmet (bubble) and the overall colouring is quite nice.

Probably needs more data to clear out the artifacts in the back ground.

This object is on my list to do with the RC. I might have to take a look at it with the OIII blended with blue, Ha blended with red, and green. I am keen to see more data on the image you have here.

More data is always good but sometimes hard to get. I have now moved to a fairly dark sky location close outside Sydney and will be building an observatory in the new year. I have a Paramount ME waiting and intend to out 2 piers in so I can get twice as much data each imaging session. That will help.

I have about 6 hours of LRGB data from earlier this year I can add.

Quote:

Originally Posted by drjcaron

Hi Greg, really nice work. I tried an additional decon on the image and produced an improved result. There were artifacts due to the jpeg compression, but it shows that even more blur can be removed If you tweak your parameters on your decon, using the original data, you should get a show-stopper.
Best Regards,
Jim C

I used deconvolution to the point where the stars were starting to get whacked. I had to repair a couple of the bigger stars. So there is a point of diminishing returns on that. The better the signal in the first place the harder you can push it. I did some slight noise control processing so perhaps the extra decon took it back to where it was before that but it was a tad noisy without it.

Quote:

Originally Posted by multiweb

Great shot Greg!

The details in the bubble are very sharp. You can almost see it expanding. Ha/Oiii blends always bring those nice red and blue hues. Works well on a lot of DSOs. Top work.

PS: Where did you get clear skies? I'll have to come and plonk my rig next to yours next time you image.

My site runs reverse to Sydney weather as its on the western side of the Great Dividing Range. Its gone back to that pattern. For about a year it was the reverse where Sydney was clear and it was cloudy. Fortunately it seems to have gone back to the normal pattern.

Bicolour does work well on nebs. It gives you whitish stars which aren't too bad.

Quote:

Originally Posted by RB

Beautiful detail in the bubble Greg !

Yes it came out well there. I guess that's the 180mm fluorite showing its stuff.

Quote:

Originally Posted by renormalised

Great shot there, Greg. Lots of detail in the helmet

Its an intriguing object, quite dim in LRGB but strongest in O111 and next strongest in Ha. Same as Vela SNR and I presume other similar type nebs. I should check out Eta C in O111 to see what that looks like or The Rosette.

Paul Haese · #10 10-12-2009, 01:40 PM

6 hours of LRGB data will really sweeten up the image. Man I wish I had some data laying around like that too. Looking forward to seeing that when you get the chance Greg.

telecasterguru (Frank) · #11 10-12-2009, 01:45 PM

Greg,

I just love the colours and the clarity of the image.

Frank

bluescope · #12 10-12-2009, 03:09 PM

Best helmet I've seen on this forum if not anywhere I believe especially as it is a work in progress ... well done Greg !

marc4darkskies (Marcus) · #13 10-12-2009, 10:16 PM

Very nice Greg! Excellent detail!

Cheers, Marcus

gregbradley · #14 10-12-2009, 10:19 PM

Quote:

Originally Posted by Paul Haese

6 hours of LRGB data will really sweeten up the image. Man I wish I had some data laying around like that too. Looking forward to seeing that when you get the chance Greg.

Its worth keeping all your data. I have a bit of library of data now.

Quote:

Originally Posted by telecasterguru

Greg,

I just love the colours and the clarity of the image.

Frank

I was happy with how the O111 turned out which is the bulk of the clarity.

Quote:

Originally Posted by bluescope

Best helmet I've seen on this forum if not anywhere I believe especially as it is a work in progress ... well done Greg !

Wow, thank you.

Quote:

Originally Posted by marc4darkskies

Very nice Greg! Excellent detail!

Cheers, Marcus

Cheers neighbour.

AlexN · #15 10-12-2009, 10:52 PM

Stunning image mate.. Simply stunning.

Looking forward to LRGB data being added.

TheDecepticon · #16 10-12-2009, 11:04 PM

Absolutely awesome!

It really is a great pic of an awesome object!

Tandum (Robin) · #17 10-12-2009, 11:22 PM

WOW ... lots of arms and legs in that one. Shouldn't it be blue/green?

Tom Davis (Tom) · #18 11-12-2009, 06:29 AM

Wow, that's deep! Great shot Greg!

Tom

gregbradley · #19 11-12-2009, 07:21 AM

Quote:

Originally Posted by AlexN

Stunning image mate.. Simply stunning.

Looking forward to LRGB data being added.

Thanks Alex.

Quote:

Originally Posted by TheDecepticon

Absolutely awesome!

It really is a great pic of an awesome object!

It is a great object isn't it.

Quote:

Originally Posted by Tandum

WOW ... lots of arms and legs in that one. Shouldn't it be blue/green?

Hehe blue/green can be arranged.

Quote:

Originally Posted by Tom Davis

Wow, that's deep! Great shot Greg!

Tom

Thanks Tom. The O111 really brought it out.

Greg

Ken · #20 11-12-2009, 04:37 PM

Great work Greg plenty of detail and very natural looking colour for a bicolour
clear skies Ken