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Old 18-05-2013, 03:36 PM
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DavidNg (David)
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Cat's Paw in HA

Hi,

Another beautiful, clear last night in Sydney. I managed to collect 20x10min data before getting so tired. HA of the Cat's Paw nebula. The ambient temp was about 12deg, so I pushed my old ST10 to -20deg reaching 95% of its capacity. I don't know if that would make any difference.

Thanks for looking.
David
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Old 18-05-2013, 05:03 PM
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multiweb (Marc)
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You're doing some superb work David.
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Old 18-05-2013, 08:53 PM
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You're doing some superb work David.
Thanks again Multiweb. I am over the moon, system is behaving well lately and weather is good too.
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Old 18-05-2013, 09:09 PM
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That's great, David
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Old 20-05-2013, 01:38 PM
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That's great, David
Thanks Larryp
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Old 20-05-2013, 01:51 PM
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That's superb David.

You're probably contributing to all the clouds out here with the fine images you're taking :-). Give us some photons as well!!
My poor scope is covered in Plastic sheets in the backyard under an Umbrella!!

Do you have a hi-res image? Do you plan on adding colour to the Ha data at all?

Cheers
Alistair
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Old 20-05-2013, 03:40 PM
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Quote:
Originally Posted by alistairsam View Post
That's superb David.

You're probably contributing to all the clouds out here with the fine images you're taking :-). Give us some photons as well!!
My poor scope is covered in Plastic sheets in the backyard under an Umbrella!!

Do you have a hi-res image? Do you plan on adding colour to the Ha data at all?

Cheers
Alistair
Thank you Alistairsam. I dont even know what is hi-res image? or how to add colour to the Ha data. Once I am more confident with Ha and processing, will definitely explore others.

David
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Old 20-05-2013, 04:28 PM
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Hi David,

I meant a higher resolution image of the Cats paw. You could host it on astrobin, pbase or other similar hosting sites.
with Ha and RGB, I think Rob Gendler's tutorial is good.
http://www.robgendlerastropics.com/HARGB.html

But there are various techniques, mainly to avoid Ha overpowering the other channels.
you might want to look at PI tutorials for HaRGB or HaLRGB with a synthetic luminence channel from RGB.

Cheers
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Old 20-05-2013, 07:42 PM
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Thats a fantastic amount of HA signal David Stars look nice and tight also, good stuff ! !
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Old 21-05-2013, 10:09 PM
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Quote:
Originally Posted by alistairsam View Post
Hi David,

I meant a higher resolution image of the Cats paw. You could host it on astrobin, pbase or other similar hosting sites.
with Ha and RGB, I think Rob Gendler's tutorial is good.
http://www.robgendlerastropics.com/HARGB.html

But there are various techniques, mainly to avoid Ha overpowering the other channels.
you might want to look at PI tutorials for HaRGB or HaLRGB with a synthetic luminence channel from RGB.

Cheers
Thank you Alistairsam for your advice. I will definitely looking through Rob and PI website tutorials and register for astrobin.

Regards
David
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  #11  
Old 21-05-2013, 10:13 PM
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Originally Posted by astronobob View Post
Thats a fantastic amount of HA signal David Stars look nice and tight also, good stuff ! !
Thanks Astronobob, I can see other experienced members here used much longer exposure for better signal/noise ratio. I have serious issue with blooming with my non-antiblooming St10xme. Have to somehow learn how to overcome this.

Regards
David
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