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  #1  
Old 30-09-2019, 01:00 PM
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Slawomir (Suavi)
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Eye of Creator, with a guidescope

Hi all,

It has been a bit of a journey which included nearly loosing a large chunk of the data with a failed PC.

Some basic info:

-> The image is a blend of 0.55 HA_SNO + 0.1 HA_HNO + 0.35 HA_HSO. I know, not really scientific at all.

-> Integration (203 hours):

HA = 194 x 900s + 157 x 1200s
OIII = 124 x 900s
NII = 88 x 900s
SII = 167 x 900s + 22 x 1200s

-> 4" guidescope, ICX 814, coastal location 20deg South of the Equator.

-> The background looks a bit gritty, but the data is extremely stretched, since background st.dev in all masters was only about 1 ADU.

Final version: https://www.astrobin.com/full/q9xl7a/G/

Thank you for looking
Suavi
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Click for full-size image (Helix 4 channels.jpg)
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Last edited by Slawomir; 01-10-2019 at 01:07 PM.
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  #2  
Old 30-09-2019, 01:10 PM
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strongmanmike (Michael)
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Tough gig huh?

Still, the depth is amazing

Mike
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  #3  
Old 30-09-2019, 01:23 PM
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cometcatcher (Kevin)
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203 hours!!!

Really nice. How do you get 203 hours of sky time in Proserpine? Always cloudy here a few km south.
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  #4  
Old 30-09-2019, 02:52 PM
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Geoff45 (Geoff)
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That is just ridiculously good Suavi. Well done--one of the best Helix pictures of all time!
A bit of gentle noise reduction might help with the grit.
Geoff
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  #5  
Old 30-09-2019, 03:12 PM
Placidus (Mike and Trish)
Narrowing the band

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Perfection and grace.
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  #6  
Old 30-09-2019, 05:47 PM
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Slawomir (Suavi)
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Quote:
Originally Posted by strongmanmike View Post
Tough gig huh?

Still, the depth is amazing

Mike
Thank you Mike. Yes, a pretty tough object to process in a different way from HOO.

Quote:
Originally Posted by cometcatcher View Post
203 hours!!!

Really nice. How do you get 203 hours of sky time in Proserpine? Always cloudy here a few km south.
Thank you Kevin. Don't know - I think it is generally drier in Proserpine than in Mackay.

Quote:
Originally Posted by Geoff45 View Post
That is just ridiculously good Suavi. Well done--one of the best Helix pictures of all time!
A bit of gentle noise reduction might help with the grit.
Geoff
Thank you Geoff. Tried gentle noise reduction, but generally I think I stretch this data too much.

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Perfection and grace.
You are very kind Mike and Trish
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  #7  
Old 30-09-2019, 05:49 PM
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Slawomir (Suavi)
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I think I will settle on this version for now:

https://www.astrobin.com/full/q9xl7a/D/?nc=user


Time to have a break from imaging (it's getting humid and cloudy), pack the camera and put those few nice eyepieces I have to some good use.
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  #8  
Old 30-09-2019, 06:19 PM
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Wow! That's some serious acquisition time but the results speak for themselves. Amazing!!!
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Old 30-09-2019, 06:54 PM
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I liked version 2 also Suavi over the other two. I am sure you will go over this more with colour and luminance data too.

I also found the background a pain too when I imaged this target. It just did not want to smooth out due the amount of stretching. That aside you have an interesting depth to the image. I am sure you will find a combination your like.

Definitely the deepest image with a 4 " getting around.
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  #10  
Old 30-09-2019, 07:05 PM
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Retrograde (Pete)
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Fabulous depth Suavi. Great work!
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  #11  
Old 30-09-2019, 07:08 PM
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Quote:
Originally Posted by Slawomir View Post
I think I will settle on this version for now:

https://www.astrobin.com/full/q9xl7a/D/?nc=user


Time to have a break from imaging (it's getting humid and cloudy), pack the camera and put those few nice eyepieces I have to some good use.
That one is the best and it has shown up the various gases very clearly.

Amazing for a 105mm scope. I guess .99 strehl does mean what we all think it means.

Greg.
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  #12  
Old 30-09-2019, 08:22 PM
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Slawomir (Suavi)
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Quote:
Originally Posted by LostInSp_ce View Post
Wow! That's some serious acquisition time but the results speak for themselves. Amazing!!!
Glad you like it. Collecting data was quite satisfying, in particular that the gear was working flawlessly.

Quote:
Originally Posted by Paul Haese View Post
I liked version 2 also Suavi over the other two. I am sure you will go over this more with colour and luminance data too.

I also found the background a pain too when I imaged this target. It just did not want to smooth out due the amount of stretching. That aside you have an interesting depth to the image. I am sure you will find a combination your like.

Definitely the deepest image with a 4 " getting around.
Thank you Paul. I used yours, Rick's, Andy's and Mike and Trish's excellent images as a guide. Not as easy path to follow processing wise for sure.


Quote:
Originally Posted by Retrograde View Post
Fabulous depth Suavi. Great work!
Thank you Pete.

Quote:
Originally Posted by gregbradley View Post
That one is the best and it has shown up the various gases very clearly.

Amazing for a 105mm scope. I guess .99 strehl does mean what we all think it means.

Greg.
Thank you Greg. The driver has yet a lot to learn, but the rig makes data acquisition an easy ride for sure.
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  #13  
Old 30-09-2019, 08:22 PM
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Slawomir (Suavi)
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And one more version before bed:

https://www.astrobin.com/full/q9xl7a/E/?nc=user

Last edited by Slawomir; 30-09-2019 at 08:33 PM.
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  #14  
Old 30-09-2019, 08:26 PM
topheart
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Very deep!
Wow!
Cheers,
Tim
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  #15  
Old 01-10-2019, 11:51 AM
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John K
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Amazing image Suavi,

A lot of work that has really paid off!!

Congrats!

John K.
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  #16  
Old 01-10-2019, 03:37 PM
JA
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Your time has been handsomely repaid.
The layers of overlaid delicate wave-front detail in the extremities is exceptional.
Well done Suavi.


Best
JA
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  #17  
Old 01-10-2019, 06:23 PM
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ChrisV (Chris)
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Suavi, that is truly amazing. The outer nebulosity has really come out well
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  #18  
Old 01-10-2019, 07:44 PM
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vlazg (George)
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203 hours, that is amazing.
Great depth, well done
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  #19  
Old 02-10-2019, 07:54 AM
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Slawomir (Suavi)
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Thank you gents for such nice encouragement

For kicks, I tried narrowband photometric colour calibration in PixInsight - attached is a screenshot of NIIHaOIII, SIIHaOIII and NIISIIOIII images.
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  #20  
Old 02-10-2019, 10:06 AM
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That's cool. The new PI Release looks interesting - and a less problematic download than the last version
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