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  #1  
Old 20-12-2015, 08:51 PM
Placidus (Mike and Trish)
Narrowing the band

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Tarantula mosaic complete

Our first completed 6 panel mosaic. 32 hours total exposure.

Here it is.

H-alpha + OIII, 16 hours each, in Placidus Palette (H-alpha = yellow, OIII = blue).

No deconvolution or sharpening. We're not planning on making the stars white. They add a certain sparkle.

Apart from the lack of SII, our shot looks virtually identical to Slawomir's. I suppose that's a good thing - it means we're all photographing what's actually up there. (The framing is very slightly different).

We're reasonably chuffed at how our written-in-house mosaic software (Prometheus) worked.

Best, M & T
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Click for full-size image (Tarantula Ha OIII 16hrs each Thumbnail.jpg)
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  #2  
Old 20-12-2015, 09:25 PM
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Atmos (Colin)
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Wonderful resolution MnT! Different take on it compared to Slawomir's without the SII.
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  #3  
Old 20-12-2015, 09:28 PM
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RickS (Rick)
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Exceptional data, M&T. Impressive on an epic scale. Not a big fan of the palette but I'm sure that my idea of colour isn't everybody's cup of tea either

Cheers,
Rick.
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  #4  
Old 20-12-2015, 10:47 PM
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marc4darkskies (Marcus)
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"Epic" sure is the right word for this one M&T! Great work! And so glad to see you posting it at high res. Can't stand it when folks do mosaics and then only post scaled down versions.

Cheers, Marcus
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  #5  
Old 20-12-2015, 10:57 PM
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strongmanmike (Michael)
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Ah Ha! Check that out! Prometheus strikes again! Rather grand and the whole area is full of stuff ... and no evil worms or dots to speak off guys, so I'm happy

Mike
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  #6  
Old 20-12-2015, 11:17 PM
Placidus (Mike and Trish)
Narrowing the band

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Quote:
Originally Posted by Atmos View Post
Wonderful resolution MnT! Different take on it compared to Slawomir's without the SII.
Thanks, Colin.

Quote:
Originally Posted by RickS View Post
Exceptional data, M&T. Impressive on an epic scale. Not a big fan of the palette but I'm sure that my idea of colour isn't everybody's cup of tea either

Cheers,
Rick.
Thanks, Rick. Took a long time to get the data wot with the rotten weather.

Quote:
Originally Posted by marc4darkskies View Post
"Epic" sure is the right word for this one M&T! Great work! And so glad to see you posting it at high res. Can't stand it when folks do mosaics and then only post scaled down versions.

Cheers, Marcus
Thanks muchly Marcus. We experimented with a 50% reduction and a JPEG compression of about 10/12, versus a 100% version and a JPEG compression of 7/12. Both produced about the same final JPEG file size, but the full res was hugely better to look at.

Quote:
Originally Posted by strongmanmike View Post
Ah Ha! Check that out! Prometheus strikes again! Rather grand and the whole area is full of stuff ... and no evil worms or dots to speak off guys, so I'm happy

Thanks, Mike. Delighted to be worm free. We're hoping to put our software in the public domain in the next few days. The manual is almost complete.

Mike
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  #7  
Old 20-12-2015, 11:52 PM
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Ryderscope (Rodney)
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Stunning MnT. Thanks for this paticular journey through the cosmos. There is much detail to wander around and explore.
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  #8  
Old 20-12-2015, 11:54 PM
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rustigsmed (Russell)
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Awesome can scan that for hours, worth the effort for sure!
Rusty
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  #9  
Old 21-12-2015, 08:59 AM
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Slawomir (Suavi)
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Awesome image Mike and Trish, certainly a benchmark IMO
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  #10  
Old 21-12-2015, 11:31 AM
Placidus (Mike and Trish)
Narrowing the band

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Quote:
Originally Posted by Ryderscope View Post
Stunning MnT. Thanks for this paticular journey through the cosmos. There is much detail to wander around and explore.
Thanks, Rodney.

Quote:
Originally Posted by rustigsmed View Post
Awesome can scan that for hours, worth the effort for sure!
Rusty
Cheers, Russell. We'd have liked to have done another three panels along the top, but you have to stop somewhere.

Quote:
Originally Posted by Slawomir View Post
Awesome image Mike and Trish, certainly a benchmark IMO
From you, Slawomir, that's quite a complement. Thank you.
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  #11  
Old 23-12-2015, 06:57 PM
topheart
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Congratulations on the mosaic!! Looks like your software has done a very good job.

Cheers,
Tim
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  #12  
Old 23-12-2015, 07:14 PM
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gregbradley
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Epic Mike! Great work and a fabulous image - congrats.

Greg.
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  #13  
Old 23-12-2015, 09:18 PM
Placidus (Mike and Trish)
Narrowing the band

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Quote:
Originally Posted by topheart View Post
Congratulations on the mosaic!! Looks like your software has done a very good job.

Cheers,
Tim
Quote:
Originally Posted by gregbradley View Post
Epic Mike! Great work and a fabulous image - congrats.

Greg.

Thanks, guys, you've cheered us up enormously. We just came back to our pied-a-terre near Penrith, with guests coming for Christmas, to find that the fridge full of fish died two weeks ago and we had to call in the biohazard team and flame throwers.
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  #14  
Old 23-12-2015, 11:13 PM
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Paul Haese
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Huge field of view now MnT. The detail is great. I just spent about 10 minutes looking through the whole image. Not enamoured with the colour but once you get the SII you will have a mega NB image of this area.
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  #15  
Old 24-12-2015, 10:08 AM
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Shiraz (Ray)
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beautiful image with both detail and cloudy softness - really top effort.

fish! - oh no, not fish....
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  #16  
Old 24-12-2015, 09:14 PM
Placidus (Mike and Trish)
Narrowing the band

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Quote:
Originally Posted by Paul Haese View Post
Huge field of view now MnT. The detail is great. I just spent about 10 minutes looking through the whole image. Not enamoured with the colour but once you get the SII you will have a mega NB image of this area.
Thanks, Paul. Given that SII is often faint in the outskirts, but one wants to hopefully balance the red, what are your thoughts on 2x2 binning the SII? Binned, we're just on the edge of critical sampling with 1.1 sec arc/pixel and typically 2.2 sec arc seeing.

Quote:
Originally Posted by Shiraz View Post
beautiful image with both detail and cloudy softness - really top effort.

fish! - oh no, not fish....
Thanks muchly Ray.
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  #17  
Old 25-12-2015, 08:37 PM
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multiweb (Marc)
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Completion of a great project. Lots to browse around. Great stuff.
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  #18  
Old 02-01-2016, 02:01 PM
LucasB (Lucas)
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What a great mosaic! Sharp, wide and a beautiful colour palette!
Lucas
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  #19  
Old 05-01-2016, 02:19 PM
Placidus (Mike and Trish)
Narrowing the band

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Quote:
Originally Posted by multiweb View Post
Completion of a great project. Lots to browse around. Great stuff.
Thanks, Marc. Glad you like it. Perhaps next year's Tarantula season might be time to add 2x2 SII, and the year after that, RGB stars!

Quote:
Originally Posted by LucasB View Post
What a great mosaic! Sharp, wide and a beautiful colour palette!
Lucas
Cheers, Lucas. Thrilled that you like the Placidus Palette.


Happy new year to all from Euchareena, where it's raining hard. Life is good because we're minding the neighbouring farm's chooks, and we've got more eggs than we can omelette.
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  #20  
Old 05-01-2016, 08:41 PM
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Amaranthus (Barry)
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Simply WOW!
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