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Old 29-11-2014, 08:19 PM
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Bassnut (Fred)
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N70 Super Bubble Nebula in Ha 42hrs

Hi guys

A mega project progress pic, dimish, not many amature pics I can find of this, annoyingly, again, not in the Sky X database. Click here for big

Taken on an RCOS 10" RC Scope at f9, SBIG STXL6303E Camera and PME mount at itelescopes Siding Spring Observatory.
Processed with CCDstack, Star Tools and Photoshop.
63 off 40min subs 3nm Ha 42hrs total exposure.

Taken over all November, much more OIII, SII and RGB taken I will add later.Its so much work, I thought I would post this in the mean time.

I agonised over the look, its not over processed, it is that narley.

Following description stolen from Don Goldman.
Henize 70 (N70, DEM L301) is part of the Large Magellanic Cloud in the southern constellation of Dorado about 170,000 light years distant. Henize 70 is a superbubble in which fast, energetic stellar winds from massive, hot stars (OB association LH 114) clear out a bubble from the surrounding interstellar medium. You can see a group of hot blue stars near the center of the bubble. The energy released into the bubble ionizes elements, such as hydrogen, oxygen and sulfur, and causes them to glow. It has also been suggested (Skelton et al., Pub Astro Soc Pac, III, 465-481, 1999) that supernova explosions within the last million years also contributed to the structure of the nebula. The nebula is about 300 light years across.
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Old 29-11-2014, 08:29 PM
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42 hours just on HA. I'm predicting one awesome image once it's finished.
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Old 29-11-2014, 08:30 PM
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Very impressive Fred. So much fine detail--really incredible. 42 hours? A bit short. Think what you could do with a looong exposure.
Geoff
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Old 29-11-2014, 08:53 PM
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Bassnut (Fred)
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Thanks Guys. You may well laugh on 42hrs , but when you just click go night after night, why not!. One moon cycle is about enough though, any improvement on that would need 80hrs or so, lifes too short.
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Old 29-11-2014, 09:15 PM
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Very nice, Fred! It's a very interesting object and I've often wondered what it would look like at longer FL. Hurry up with the colour

I'm up to 90+ hours on a partially completed image now, but it's a mosaic

Cheers,
Rick.
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Old 29-11-2014, 09:18 PM
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Quote:
Originally Posted by RickS View Post
Very nice, Fred! It's a very interesting object and I've often wondered what it would look like at longer FL. Hurry up with the colour

I'm up to 90+ hours on a partially completed image now, but it's a mosaic

Cheers,
Rick.
90 hrs, gaud even im not up to that, you shame me . I NEED to see that
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Old 29-11-2014, 09:29 PM
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Quote:
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90 hrs, gaud even im not up to that, you shame me . I NEED to see that
Still need a bunch more data but I'll certainly post it here when it's fully cooked
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Old 29-11-2014, 09:44 PM
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Superb!
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Old 29-11-2014, 09:56 PM
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marc4darkskies (Marcus)
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Looking very good so far Fred! Hats off for that kind of effort! Look forward to the finished result!!

Cheers, Marcus
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Old 30-11-2014, 07:02 AM
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That's fantastic Fred.

Greg.
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Old 30-11-2014, 08:26 AM
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Top image Fred,
With the constant clouds & my job commitments in Melbourne -
I am considering using itelescope myself.
Your pic proves that their service really works.

cheers
Allan
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Old 30-11-2014, 11:14 AM
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Very nice image Fred.

Steven
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Old 30-11-2014, 12:05 PM
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It is very nice image
Franck
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Old 30-11-2014, 04:00 PM
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lazjen (Chris)
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Impressive so far!

Why did you use 40 min exposures? Was that calculated somehow?
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Old 30-11-2014, 04:04 PM
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Excellent Fred, like waves of gas washing up upon a cosmic seashore...
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Old 30-11-2014, 05:29 PM
DJT (David)
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Stunning image Fred, love all the whirls on in this object and looking forward to seeing what's next. Top job
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  #17  
Old 01-12-2014, 02:08 AM
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Fantastic Fred, the basket weaving look is very intricate huh?

Amazing exposure times some of you guys do...while I have done a couple of mega data images in the past, I'm struggling to even hit 20hrs "total" incl RGB, these days Look forward to the final product...and yours too Ricki!!!

Mike
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Old 01-12-2014, 07:48 AM
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multiweb (Marc)
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Wooly bubble. Very nice indeed.
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Old 01-12-2014, 05:44 PM
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Bassnut (Fred)
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Thanks for the nice comments guys, makes the effort worth it.
40min subs. Well, I dont collect a lot of light on a 10" at f8 with 3nm filters. Longer subs is always better, but say 1hr can leave a lot of wasted time on dud subs and possible blooming, so 40 min seemed a handy standard (pretty random otherwise actually), you know, 3 every 2hrs, easy to recon when casually deciding on a project.
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Old 01-12-2014, 09:13 PM
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Leonardo70 (Leonardo Orazi)
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Wonderful ... incredible result.

All the best,
Leo
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