NGC-3576 The Statue of Liberty Nebula

[evltoy (Wayne)]

Its been a very long time since I have posted any of my images due to work and kids.

Anyways. Here is my first attempt at Narrow Band (SHO)

Integration (4hr:12min)
H 30x 300sec
S 30x300sec
O 30x300sec
Flats 30x 3
DarkFlats x60
Darks x30
gain 120, -10deg
Filter Ha Sii Oiii
Bortle 5
Moon 93%

Celestron C8, .63 reducer, OAG, CAA, EFW & Asi294mm
ASIair, 290mm mini, NEQ6

[leon]

Wow Wayne that is brilliant mate, I cant say that I have really heard of that particular object, well done indeed.

Leon

[Anth10 (Anthony M)]

Congrats Wayne on a fine first effort with Narrowband filters.
You must be impressed with this image, nicely processed and executed.
Regards,
Anth

[Plossl68 (Paul)]

Wow! If that’s a first attempt at narrowband, I’d love to see the image when you’ve had some practice. Really impressive.

Out of interest, which brand/model filters did you pair with your 294mm Wayne? (I ask only as I contemplate future purchases for a jump one day to mono. :-)

[JohnA (John)]

Great capture Wayne, love it

[Bodon (Steve)]

Wayne nice detailed photo!

[evltoy (Wayne)]

Thank you all for your feedback. This is something that doesn't happen over night. There has been a lot of time researching, spending $$$$, making a lot of mistakes all in the name of having fun learning about astronomy and imagining.

Originally Posted by Plossl68

Out of interest, which brand/model filters did you pair with your 294mm Wayne? (I ask only as I contemplate future purchases for a jump one day to mono. :-)

I didnt go fancy. Just some ZWO 7nm sets. I did this as I plan to use these filters in my C8 Hyperstar setup next season. If you know about F ratio speeds and band shift, you will understand.

[Plossl68 (Paul)]

Originally Posted by evltoy

I didnt go fancy. Just some ZWO 7nm sets. I did this as I plan to use these filters in my C8 Hyperstar setup next season. If you know about F ratio speeds and band shift, you will understand.

Thanks for the info and very impressed with the outcome.

[Startrek (Martin)]

Wayne,
Congratulations on your first SHO narrowband image
Nice to see a fully calibrated image as well !!
The data is excellent, well done indeed !!
My only observation and please take it with a grain of salt if you wish , and that is, your image has a huge amount excellent detail and structure that is hidden and is waiting to be exposed. Maybe you like this darkish conservative image but I couldn’t help but expose more of your hard work in the image as there is some incredible detail everywhere !!
I do hope you didn’t mind but I ran your image through Startools with a quick auto stretch , a tad more sharpening and come up with this result ( took me 5mins ) I still put the brakes on and could have easily exposed more.
See what you think ?

Martin

[evltoy (Wayne)]

Thank you Martin. You are 100% correct. I could have pushed the stretch further, but I was afraid I was going to blow out the bright areas.

Your 5min touch sure exposes more data that I was scared to pull out. - Thank you as always on the tip.

I still have the masters and even the project so on a rainy day I will reattempt.

[Startrek (Martin)]

Originally Posted by evltoy

Thank you Martin. You are 100% correct. I could have pushed the stretch further, but I was afraid I was going to blow out the bright areas.

Your 5min touch sure exposes more data that I was scared to pull out. - Thank you as always on the tip.

I still have the masters and even the project so on a rainy day I will reattempt.

Just a note on my 5min reprocess in Startools , this software is totally different from conventional traditional Astro processing software, it actively tracks your data from start to finish , there’s no support marks or histogram stretches with levels and curves etc.. it has your back all the way along when you use each module and each module takes control of signal and noise. When you jump from module to module you don’t have to worry what you did before as it time travels back and forth. There’s no hacks or kludges !!!
When I applied the AutoDev stretch it just knew what to do to control the core brightness and overall dynamic range , all I did was throttle the Gamma to what level I thought was enough to expose detail. Default Gamma is 1.0 , I set it to 0.70 and your original image was way down at 0.50 way too dark.

Anyway I hope you can get similar or better results from your preferred software as the data is of a high quality and the image is top notch too.

Good Luck
Martin