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Old 14-08-2014, 06:45 PM
loc46south (Geoffrey)
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Tarantula Ha - New Filter

Hi All - I have tried to capture the essence of this nebula many times over many years. A sampling of the latest effort using a new 3nm Ha Astrodon filter - I have just replaced all my NB filters with the 3nm filters. They are expensive but are showing great promise.

Larger copy http://www.pbase.com/loc46south/imag...76547/original

12 x 600sec - ST10XME - SW120 Equinox - Losmandy G11 Gemini L1

Thanks
Geof Wingham
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Old 14-08-2014, 06:56 PM
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Bassnut (Fred)
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Thats good, you will find 3nm a big improvement and well worth the $, especially with a classic high QE cam like the ST10XME. But your processing needs to take a step up to take advantage. The image is a bit compressed and blown. A quick fiddle in PS rendered much more detail.
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Old 14-08-2014, 07:08 PM
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strongmanmike (Michael)
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Wow, there is so much nebula in there I thought it was a flat frame

While, yes, perhaps the processing could have been a bit more subtle (although I can't talk ) I love images like this, remind me of the amazing deep schmidt plates of the 70's and 80's that I thought were unapproachable

Mike
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Old 15-08-2014, 09:53 AM
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multiweb (Marc)
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Stars look really good. Heaps of neb for sure. You might want to do a tri-color with Sii and Oiii. If you can match that data it would be a corker.
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  #5  
Old 15-08-2014, 12:06 PM
loc46south (Geoffrey)
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Thanks for the comments & suggestions :-

Bassnut - I don't use PS only Pixinsight - It is still early days with my processing skills.

Strongmanmike - I deliberately tried to push the fainter nebula out of curiosity - I was more impressed by the filters ability to suck out the centre of the nebula, which most times it is burnt out.

Multiweb - Its going to be a long project I think - the narrower filters obviously need a lot more data to control noise- though I am impressed by early results.

The original image posted was not processed it has only been given a masked stretch in Pixinsight - I wanted to see how it could push the fainter parts of the nebula - for comparison I have included the original image as it came off the camera - it has only been given a screen stretch.

Care was taken to make sure when capturing the image that none of the stars or areas of the nebula were saturated.

Cheers
Geof Wingham
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  #6  
Old 16-08-2014, 08:37 AM
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Very nice Geoff. The 2nd last one is very good indeed.

Greg.
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Old 16-08-2014, 01:24 PM
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RickS (Rick)
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Looks like you've got some great data, Geoff.
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