AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

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AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#1

Post by Jockinireland »


We have an real treat this time around. @STEVE333 has given us his Eagle and Omega Widefield data and it is stunning data and a stunning image.

Steves post is here so you can see what we have got. viewtopic.php?f=66&t=18580

This is narrowband Ha and Oiii data but if you are new and dont feel ready to combine narrowband keep reading - something for you too"

The stacked untouched files can be downloaded here https://drive.google.com/drive/folders/ ... sp=sharing

In there you have Steves fits and then an xisf and 2 tiffs which I have saved from PI. The tiffs are available as both 32 bit and 16 bit. So you should have anything you need.

Also for anyone not ready to try combining narrow band I have taken the liberty (Hope you don't mind Steve) of making a combined file as straight HOO. This is a colour image and is kinda like what you could expect straight out of an DSLR/OSC with a L-eNhance or L-eXtreme filter. Other than combining the channels this is totally untouched also. I've only done a fits for that - if you want it in another format post here or PM me and Ill sort it.

Download what files you want and process in your software(s) of choice then post in this thread. The purpose of the APP Challenge is to share techniques so we can all learn and grow in our abilities so please describe your process steps and any special tricks you used to get your result. If you have been finding something difficult to do with this data - tell us and hopefully someone will be able to help.

Please consider submitting some data of your own for future challenges. Just send a PM to a Mod or an email to: tssapchallenge@theskysearchers.com

I am really excited to work this data myself and look forward to seeing what everyone can do with it.

Take care everyone. And THANKS Steve :text-thankyouyellow:

rgds

David.
Scope: Skywatcher Evostar 80ED (SW 0.85 FR/FF) on a SW NEQ6Pro
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#2

Post by STEVE333 »


For those wanting to use PCC:
Pixel size = 3.8 um
Focal length = 348 mm
RA = 18 deg 20 min
Dec = -14 deg 58 min
Northern Hemisphere

For those wanting to use MureDenoise the picture below shows the settings I used.
Mure.JPG
Cheers

Steve
Steve King: Light Pollution (Bortle 5)
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Camera: ASI 1600MM Pro + EFW Filter Wheel + Chroma 3nm Siii, Ha, Oiii + ZWO LRGB Filters
Software: PHD2; APT; PixInsight ***** My AP website: www.steveking.pictures
Image
Image
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#3

Post by Jockinireland »


Thanks for that @STEVE333

Now that immediately opens a question from me. I have been under the belief that there was no point in trying PCC on NB data. My thinking was that since we have already disrupted the colour so much by filtering out all except our required wavelength, it would be pretty futile to try to calibrate.it back.

So I've never tried it on my l-enhance data.

But your post above clearly means it can work. So, any thoughts or tips for using PCC on NB data.?

Rgds

David
Scope: Skywatcher Evostar 80ED (SW 0.85 FR/FF) on a SW NEQ6Pro
Guiding; SW Evoguide 50ED, ASI 120mm mini
Meade 8" LX200 GPS on wedge (Guided with a cheapo 50mm guidescope and a ZWO ASI 120mm mini)
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#4

Post by ic_1101 »


Thanks Steve for sharing that excellent data. Here is my stab at it using Pixinsight with the following workflow.
ABE
Masked Stretch
Star Align
Dynamic Crop
Linear Fit
StarNet
MLT
Curves Transform
HDR MultiScale Transform
Pixel Math: R/K: Ha
G: (Ha*.5)+(Oiii*.5)
B: Oiii
Eagle.jpg
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#5

Post by Jockinireland »


@ic_1101 I like that - the Oiii is quite strong. Can you explain the use of linear fit here - I thought that was really just an RGB thing. What does it do with these sorts of NB data?
Scope: Skywatcher Evostar 80ED (SW 0.85 FR/FF) on a SW NEQ6Pro
Guiding; SW Evoguide 50ED, ASI 120mm mini
Meade 8" LX200 GPS on wedge (Guided with a cheapo 50mm guidescope and a ZWO ASI 120mm mini)
Sharpstar 61EDPH II (with dedicated 0.8 reducer) with wiliam Optics 32mm uniguide
Camera: ASI2600MC pro. QHY 163M with ZWO 7nm NB filters, Canon EOS700D astro mod
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#6

Post by Ruud »


Hi guys,

it is a tough one. I tried my usual tricks but got a messy result. So I experimented and now have a preliminary version ftom Fitswork (using the combined Ha+Oiii file) and PS, pulling the image through PS's camera raw (CR) twice.

In CR I played with exposure (high), contrast (low) , clarity, black level, hue & temp, saturation (lowish) and vibrance (high). In PS proper I did some burning.

I must try again. A different start in Fitswork might just lead to a better result.
  
Steve333_EandO_COMBINED_Ha_Oiii_3A.png
  
Thank you Steve, David and Graeme for a challenging challenge.
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#7

Post by ic_1101 »


Jockinireland wrote: Sat Jun 12, 2021 6:23 pm @ic_1101 I like that - the Oiii is quite strong. Can you explain the use of linear fit here - I thought that was really just an RGB thing. What does it do with these sorts of NB data?
Thx David. I guess Linear Fit is used for narrowband for the same reasons as using it for broadband. Using LinearFit is just as arbitrary as any other tool such as HistogramTransformation or curves to match up the average background and signal brightness between the narrowband data where usually Ha will be the strongest.
Jon Rista explains it much better than I’m capable of.

https://jonrista.com/the-astrophotograp ... linearfit/
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#8

Post by Hondo »


Here is my go at it with Star Tools 1.7, ST log is attached. Very nice data Steve, thanks for the share.
Attachments
Steve's AP Challenge ST Log.pdf
(107 KiB) Downloaded 123 times
Steve's AP Challenge.jpg
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

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Post by STEVE333 »


Hondo wrote: Sun Jun 13, 2021 2:31 am Here is my go at it with Star Tools 1.7, ST log is attached. Very nice data Steve, thanks for the share.
Image

You really brought out a lot of the blue Scott. Thanks for sharing the StarTools version. Lovely image. Nice to have you back.

Steve
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#10

Post by Graeme1858 »


Here's my go.

I used the Combined .fits file in PixInsight.

Background Neutralisation
Colour Calibration
SCNR
Star Mask
Morphological Transformation
Curves

Steve333_EandO_COMBINED_Ha_Oiii.jpg

Love this programme! There's a thousand ways of doing this. I expect I'll have another go later.

The sleeping face in the top left corner is cool!

Regards

Graeme
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#11

Post by Jockinireland »


That's really good @Graeme1858 , your getting the hang of Pi.

Yes I love that face too. I've heard her called The Star Queen which I think is very apt.

I've not gone at this challenge yet but hopefully will get time at it soon.

Take care all.

David
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#12

Post by Ruud »


This time I tried processing the Ha and Oiii in Fitswork separately.
In photoshop I added colour and curves to each image, using these layers:
capture_001_13062021_181833.png
Then I saved as png.

I later applied one last adjustment to the png: a LUT 'Cali Vibes'
which turned the reds to a slightly more pleasing orange.
This is the result:
P5-CaliVibes.png
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#13

Post by Jockinireland »


So I finally got some time to have a go at this. It is really great data so thanks again @STEVE333

My process was as follows

On each of the Ha and Oiii XISF files
Dynamic crop
deconvolution
EZ Denoise
stretch to linear with HT and CT
LHE

I then combined the channels. I had a few goes in SHO-AIP script but could not get the colour i wanted so then did a simple combine in Pixelmath with R=HA, G=Oii -0.7+ Ha 0.3, B= Oiii0.8 + Ha0.3. I really wanted the Ha to be red and the Oiii to be blue. Reds a little pinker than I wanted but its not too far off.

Conv and sat with CurvesTransform
Then LRGB combine with the Ha as lum
HDRMT
MT for star reduction

I then went into Photoshop and did some selective colour tweaks and a selective Highpass sharpen routine to emphasise the details of the Pillars and the inside of Omega. Then saved to jpg giving this....
Steve333_oandE_dlm_full_r2.jpg
I'm reasonably happy with it although the deep background is a bit too dark - but by the time I realised it it was too late to fix it. But then again there was nothing to clip in those areas and it adds to the drama of the image I think. But as Steve said himself "Your opinions, of course, may differ from mine".

Suggestions for improvement appreciated (thats rather the point of this after all!)

Take care everyone

David.
Scope: Skywatcher Evostar 80ED (SW 0.85 FR/FF) on a SW NEQ6Pro
Guiding; SW Evoguide 50ED, ASI 120mm mini
Meade 8" LX200 GPS on wedge (Guided with a cheapo 50mm guidescope and a ZWO ASI 120mm mini)
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#14

Post by Sky »


First off ... a big thank-you to Steve333 for supplying such excellent data for us to play with.

After checking out all the submissions that show great processing skills in revealings extremely faint nebulosity, I decided to go off on a different tack and try to expose very fine details in the images.

I'm posting full resolution, sub-frame images of the Eagle and Swan nebulae and a full frame, lower resolution image showing both the Eagle and Swan nebulae. All image processing was done in Photoshop.

Processing details:

Curves (several times)
Background noise reduction
Tone Mapping (free NIK Collection)
Unsharp Mask
Global Noise Reduction (free NIK Collection)
Selective Noise Reduction (free NIK Collection)
Selective High Pass Sharpen (very powerful processing technique to bring out faint detail)
Levels (nebula color and background color adjustments)

If you use Photoshop, try the free NIK Collection ... look online for the legal free version. Interested in HDR Toning and Selective High Pass Sharpen ... check out the free Ken Crawford tutorials:

http://www.imagingdeepsky.com/Presentations.html

Eagle_Steve333_Full_Res_TSS.jpg
Swan__Nebula_M17_Steve333_color_TSS.jpg
Eagle_and_Swan_Steve333_full_frame_TSS.jpg
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#15

Post by UkDave »


Hi guys first post loveley data btw @STEVE333 ,processed in Startools 1.8 Alpha first play using 1.8 version
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Skysearchers-Eagle Nebula .jpg
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#16

Post by Jockinireland »


That's nicely done Dave. Welcome to TSS and to the AP Processing Challenge.

Any chance you could post up you ST processing log - it a great way for others to see how people approach things

Thanks for joining the challenge.

Rgds

David
Scope: Skywatcher Evostar 80ED (SW 0.85 FR/FF) on a SW NEQ6Pro
Guiding; SW Evoguide 50ED, ASI 120mm mini
Meade 8" LX200 GPS on wedge (Guided with a cheapo 50mm guidescope and a ZWO ASI 120mm mini)
Sharpstar 61EDPH II (with dedicated 0.8 reducer) with wiliam Optics 32mm uniguide
Camera: ASI2600MC pro. QHY 163M with ZWO 7nm NB filters, Canon EOS700D astro mod
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#17

Post by Graeme1858 »


UkDave wrote: Fri Jun 18, 2021 8:38 pm Hi guys first post .....

Hello Dave

That's a great go at the Eagle.

Welcome to the forum.

Regards

Graeme
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#18

Post by Graeme1858 »


Here's my attempt no2! This time following a video by Shawn Harvey. (Celestial Photography)

Capture.JPG

The Channel Extraction, Linear Fit, Channel Combination processes were to match everything to the Ha Median, from the Image Statistics. I used Dynamic Background Extraction too but Dynamic Crop wouldn't open whilst DBE was still open so it's not displayed. I got distracted during Background Neutralisation so I'm not sure if that worked! Not sure if Deconvolution did anything but Morphological Transformation really neatened up the stars. Used the Curves Transformation for an S curve on the RGB to tweak up the contrast, pulled up the Saturation, and played with the Hue to try and up the blue levels a tiny tad.

Just wondering, did PixInsight win any awards for the most creative Process names? :D

Challenge No 19 - 02.jpg
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Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#19

Post by UkDave »


Jockinireland wrote: Fri Jun 18, 2021 10:33 pm That's nicely done Dave. Welcome to TSS and to the AP Processing Challenge.

Any chance you could post up you ST processing log - it a great way for others to see how people approach things

Thanks for joining the challenge.

Rgds

David
Thanks steve log file below

-----------------------------------------------------------
skysearchers
-----------------------------------------------------------
StarTools 1.8.503alpha
Fri Jun 18 20:33:31 2021
-----------------------------------------------------------
Loading blue channel data
File loaded in LRGB module [C:\Users\44772\Downloads\Steve333_EandO_Oiii.fit].
Loading green channel data
File loaded in LRGB module [C:\Users\44772\Downloads\Steve333_EandO_Ha.fit].
--- Compose
Parameter [Luminance, Color] set to [L + Synthetic L From RGB, RGB]
Parameter [Color Ch. Interpolation] set to [On]
Parameter [UNKNOWN] set to [Ha/S-II from NB filter]
Parameter [Lum Total Exposure] set to [Not set]
Parameter [Blue Total Exposure] set to [1h00m (60m) (3600s)]
Parameter [Green Total Exposure] set to [1h00m (60m) (3600s)]
Parameter [Red Total Exposure] set to [Not set]
Image size is 4656 x 3520
Type of Data: Linear, was not Bayered, or was Bayered + white balanced
--- Auto Develop
Parameter [Ignore Fine Detail <] set to [Off]
Parameter [Outside RoI Influence] set to [15 %]
Parameter [RoI X1] set to [0 pixels]
Parameter [RoI Y1] set to [0 pixels]
Parameter [RoI X2] set to [4656 pixels (-0)]
Parameter [RoI Y2] set to [3520 pixels (-0)]
Parameter [Detector Gamma] set to [1.00]
Parameter set to [50 %] --- Bin Parameter [Scale] set to [scale 50.00% / +2.00 bits / +1.00x SNR improvement] Image size is 2328 x 1760 --- Crop Parameter [X1] set to [25 pixels] Parameter [Y1] set to [51 pixels] Parameter [X2] set to [2304 pixels (-24)] Parameter [Y2] set to [1730 pixels (-30)] Image size is 2279 x 1679 --- Wipe Parameter [Synthetic Dark/Bias] set to [Off] Parameter [Gradient Edge Behavior] set to [Bounce Back] Parameter [Synthetic Flats] set to [Off] Parameter [Sampling Precision] set to [128 x 128 pixels] Parameter [Dark Anomaly Filter] set to [4 pixels] Parameter [Gradient Falloff] set to [0 %] Parameter [Synth. Bias Edge Area] set to [100 %] Parameter [Gradient Aggressiveness] set to [0 %] Parameter [Correlation Filtering] set to [0.5 pixels] Redoing stretch of linear data --- Auto Develop Parameter [Ignore Fine Detail <] set to [Off] Parameter [Outside RoI Influence] set to [15 %] Parameter [RoI X1] set to [1610 pixels] Parameter [RoI Y1] set to [689 pixels] Parameter [RoI X2] set to [2221 pixels (-58)] Parameter [RoI Y2] set to [1501 pixels (-178)] Parameter [Detector Gamma] set to [1.00] Parameter [Shadow Linearity] set to [50 %] --- Contrast Parameter [Expose Dark Areas] set to [No] Parameter [Brightness Retention] set to [Global Mode Align] Parameter [Precision] set to [256 x 256 pixels] Parameter [Shadow Detail Size] set to [10 pixels] Parameter [Locality] set to [50 %] Parameter [Shadow Dyn Range Alloc] set to [100 %] --- HDR Parameter [Small Detail Precision] set to [Max] Parameter [Channels] set to [Brightness Only] Parameter [Algorithm] set to [Reveal All] Parameter [Dark/Bright Response] set to [1.00] Parameter [Detail Size Range] set to [371 pixels] Parameter [Strength] set to [1.2] --- Wavelet Sharpen Parameter [Structure Size] set to [Large] Mask used (BASE64 PNG encoded) --- SNR-aware Wavelet Sharpening Parameter [Scale 1] set to [100 %] Parameter [Scale 2] set to [100 %] Parameter [Scale 3] set to [100 %] Parameter [Scale 4] set to [100 %] Parameter [Scale 5] set to [100 %] Parameter [Mask Fuzz] set to [4 pixels] Parameter [Amount] set to [300 %] Parameter [High SNR Size Bias] set to [85 %] Parameter [Low SNR Size Bias] set to [0 %] Parameter [Dark/Light Enhance] set to [50% / 50%] Mask used (BASE64 PNG encoded) --- Spatially Variant PSF Deconvolution Parameter [PSF Resampling] set to [None] Parameter [Synthetic PSF Model] set to [Circle of Confusion (Optics Only)] Parameter [Sampled Area] set to [15x15] Parameter [Synthetic PSF Radius] set to [1.5 pixels] Parameter [Synthetic Iterations] set to [Off] Parameter [Spatial Error] set to [1.00] Parameter [Deringing Fuzz] set to [20.0 pixels] Parameter [Deringing] set to [50 %] Parameter [Dyn. Range Extension] set to [1.00] Parameter [Linearity Cutoff] set to [85 %] Parameter [Sampled Iterations] set to [10x] Mask used (BASE64 PNG encoded) --- Color Parameter [Bias Slider Mode] set to [Sliders Reduce Color Bias] Parameter [Style] set to [Artistic, Detail Aware] Parameter [LRGB Method Emulation] set to [Straight CIELab Luminance Retention] Parameter [Matrix] set to [SHO 40SII+60Ha,70Ha+30OIII,100OIII] Parameter [Dark Saturation] set to [2.0] Parameter [Bright Saturation] set to [4.2] Parameter [Saturation Amount] set to [250 %] Parameter [Blue Bias Reduce] set to [1.00] Parameter [Green Bias Reduce] set to [5.03] Parameter [Red Bias Reduce] set to [2.32] Parameter [Mask Fuzz] set to [1.0 pixels] Parameter [Cap Green] set to [0 %] Parameter [Highlight Repair] set to [8 pixels] Mask used (BASE64 PNG encoded) --- Shrink Parameter [Mode] set to [Tighten] Parameter [Halo Extend] set to [1 pixels] Parameter [Iterations] set to [10] Parameter [Regularization] set to [0.85] Parameter [Color Taming] set to [2 pixels] Parameter [De-ringing] set to [Off] Parameter [Un-glow Strength] set to [35 %] Parameter [Un-glow Kernel] set to [30.0 pixels] --- Entropy-driven Detail Enhancement Parameter [Resolution] set to [Medium] Parameter [Channel Selection] set to [All] Parameter [Strength] set to [100 %] Parameter [Midtone Pull Filter] set to [20.0 pixels] Parameter [Midtone Pull Strength] set to [50 %] Parameter [Dark/Light Enhance] set to [50% / 50%] Mask used (BASE64 PNG encoded) --- Super Structure Parameter [Detail Preservation] set to [Min Distance to 1/2 Unity] Parameter [Compositing Algorithm] set to [Multiply, Gamma Correct] Parameter [Brightness, Color] set to [Process Both] Parameter [Brightness Retention] set to [Local Median] Parameter [Mask Fuzz] set to [1.0 pixels] Parameter [Airy Disk Radius] set to [50 %] Parameter [Gamma] set to [0.75] Parameter [Detail Preservation Radius] set to [20.0 pixels] Parameter [Saturation] set to [50 %] Parameter [Strength] set to [100 %] Undo Image size is 2279 x 1679 --- Super Structure Parameter [Detail Preservation] set to [Linear Brightness Mask] Parameter [Compositing Algorithm] set to [Screen] Parameter [Brightness, Color] set to [Only Color] Parameter [Brightness Retention] set to [Off] Parameter [Mask Fuzz] set to [1.0 pixels] Parameter [Airy Disk Radius] set to [50 %] Parameter [Gamma] set to [0.07] Parameter [Detail Preservation Radius] set to [20.0 pixels] Parameter [Saturation] set to [200 %] Parameter [Strength] set to [100 %] --- Unified De-Noise Parameter [Grain Size] set to [5.0 pixels] Parameter [Walking Noise Size] set to [1.0 pixels] Parameter [Walking Noise Angle] set to [0] --- Unified De-Noise Parameter [Scale 1] set to [99 %] Parameter [Scale 2] set to [95 %] Parameter [Scale 3] set to [95 %] Parameter [Scale 4] set to [95 %] Parameter [Scale 5] set to [50 %] Parameter [Equalized Grain] set to [0 %] Parameter [Scale Correlation] set to [50 %] Parameter [Color Detail Loss] set to [50 %] Parameter [Brightness Detail Loss] set to [50 %] Parameter [Grain Dispersion] set to [5.0 pixels] --- Fractal Flux Parameter [Brightness Mask Mode] set to [Off] Parameter [Algorithm] set to [Modulate Unsharp Mask] Parameter [Negative Flux] set to [0 %] Parameter [Positive Flux] set to [500 %] Parameter [Detail Filter] set to [1.0 pixels] Parameter [Filter Fuzz] set to [1.0 pixels] Parameter [Filter Radius] set to [1.5 pixels] Parameter [Filter Amount] set to [200 %] Parameter [Mask Fuzz] set to [1.0 pixels] Parameter [Brightness Mask Power] set to [1.0] File saved [C:\Users\44772\Downloads\Skysearchers-Eagle Nebula .jpg].
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Jockinireland Ireland
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TSS Photo of the Day

Re: AP Processing Challenge 19 - Steve333-Widefield Eagle_Omega

#20

Post by Jockinireland »


Nice one @Graeme1858 i like this version, shows more detail in the centre of each nebula and i think the the backround is better too.
Scope: Skywatcher Evostar 80ED (SW 0.85 FR/FF) on a SW NEQ6Pro
Guiding; SW Evoguide 50ED, ASI 120mm mini
Meade 8" LX200 GPS on wedge (Guided with a cheapo 50mm guidescope and a ZWO ASI 120mm mini)
Sharpstar 61EDPH II (with dedicated 0.8 reducer) with wiliam Optics 32mm uniguide
Camera: ASI2600MC pro. QHY 163M with ZWO 7nm NB filters, Canon EOS700D astro mod
Secondary mount: Skywatcher StarAdventurer

My Astrobin https://www.astrobin.com/users/mackiedlm/
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