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Old 18-08-2015, 11:45 AM
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multiweb (Marc)
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M13 - Hercules Globular Cluster

Here's my first northern target from astrofest. M13. I used to look at it visually with my 65mm Perl Vixen refractor back home in 86 when Halley comet was around. Then I sold that refractor and bought an electric guitar which proved a lot better to pick up girls.

So it's been a long time between drinks when I finally imaged it last week. It was a little low but still a lot higher than in Sydney. Not too sure about the colors. Maybe it should be a little bluer.

I have a full res 1:1 here [8MB - 4256x2822]
It's bigger than my sensor pixel size because I used bayer drizzle.

HD version is here: [2MB - 1920x1273].

You'll see a small galaxy at 2 O'clock in the full res and loads of background faint fuzzies as well. Enjoy the view.
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Old 18-08-2015, 01:16 PM
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MortonH
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Nice one, Marc.

Does seem perhaps a bit yellow?
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Old 18-08-2015, 02:00 PM
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multiweb (Marc)
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Quote:
Originally Posted by MortonH View Post
Nice one, Marc.

Does seem perhaps a bit yellow?
Yeah it does hey? Gotta work out the color balance a bit better.
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Old 18-08-2015, 03:27 PM
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rustigsmed (Russell)
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very nice Marc, razor sharp and plenty of background galaxies in the mix! colour perhaps a little warm as mentioned but a cracking shot!

Rusty
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Old 18-08-2015, 08:11 PM
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multiweb (Marc)
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very nice Marc, razor sharp and plenty of background galaxies in the mix! colour perhaps a little warm as mentioned but a cracking shot!

Rusty
Thanks mate. Color's not my forte I'll have to work out the color balance in PI. Still not too sure which one of the processes does it.
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Old 18-08-2015, 11:22 PM
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It is nicely captured, loving the background galaxies peeking through

What may work is doing a white balance in PI but selecting as much as possible that doesn't contain the globular cluster, that could be what is throwing that out. My colour calibration is pretty terrible mind you so feel free to disregard what I have to say
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Old 18-08-2015, 11:57 PM
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...Then I sold that refractor and bought an electric guitar which proved a lot better to pick up girls... :
You're picking up the wrong girls then.

Great shot by the way.
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Old 19-08-2015, 07:59 AM
Placidus (Mike and Trish)
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Good one. The drizzling worked a treat. Lots of background beasties making the field interesting.

Must have been quite a logistical challenge getting to Qld with all the kit.
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Old 19-08-2015, 09:24 AM
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Quote:
Originally Posted by Atmos View Post
It is nicely captured, loving the background galaxies peeking through

What may work is doing a white balance in PI but selecting as much as possible that doesn't contain the globular cluster, that could be what is throwing that out. My colour calibration is pretty terrible mind you so feel free to disregard what I have to say
Cool - will try that. Thanks.

Quote:
Originally Posted by cometcatcher View Post
You're picking up the wrong girls then.

Great shot by the way.
Thanks. Married one though. 23 years and still going
Quote:
Originally Posted by Placidus View Post
Good one. The drizzling worked a treat. Lots of background beasties making the field interesting.

Must have been quite a logistical challenge getting to Qld with all the kit.
Thanks Mike. It seems to work better on some pics than others. Still to investigate if dithering is the cause. I travelled light with what I knew worked and I tested everything plugged in the living room before hand. Cut the trip in two 7h halves, slept in Armidale. Rig behaved and all went well. The only thing I'd advise is to pack a tarp. Sun showers in QLD are brief but fierce.
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Old 19-08-2015, 09:40 AM
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h0ughy (David)
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Hi Marc,

i like the subject and yes its yellow, but the background noise is apparent - maybe pushed a little - says me that hasn't processed a thing for ages.

nice round stars
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Old 19-08-2015, 09:45 AM
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Originally Posted by h0ughy View Post
Hi Marc,

i like the subject and yes its yellow, but the background noise is apparent - maybe pushed a little - says me that hasn't processed a thing for ages.

nice round stars
Thanks mate. Yeah I had to dump all the subs from Monday night on this one, so it is only Sunday's run. The seeing was so bad early evening that I thought I had binned the subs 2x2 when I checked them . Agreed about the color. I seem to do yellow or green pictures lately. I need to switch my Ha mono brain off gear and see the light in colour again I'll give it a couple of days and repro.
PS: I'm also learning PI. I've been assimilated. Resistance was futile.
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Old 19-08-2015, 10:32 AM
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strongmanmike (Michael)
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Nice work Mark, those few extra degrees of latitude north can make a difference . I was looking at this the other night through my 12" dob out at Wallaroo, I got some resolution but it was pretty low and I certainly wouldn't have bothered to image it.

Mike
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Old 19-08-2015, 11:25 AM
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Quote:
Originally Posted by strongmanmike View Post
Nice work Mark, those few extra degrees of latitude north can make a difference . I was looking at this the other night through my 12" dob out at Wallaroo, I got some resolution but it was pretty low and I certainly wouldn't have bothered to image it.

Mike
Thanks Mike. Yes a few degrees did a lot of difference on the veil and I also have a neat shot of the Pleiades. M33 and Andromeda were awesome. M16/17 right up the zenith too. I got two panels on these.

On M13, does it have a yellow tinge? I can't seem to make it blue. Even with all the channels to equal levels. Just wondering.
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Old 30-08-2015, 07:42 PM
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RickS (Rick)
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Looks like a glob should, Marc!
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