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Barnard 33 - Horsehead Nebula (w/ Data)

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#1 Derryk

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Posted 27 November 2013 - 07:38 PM

Here is the last shot from my camping trip. Barnard 33 (Horsehead Nebula) is a dark nebula located in the constellation Orion almost 1500 lightyears away. Also in this shot is the emission nebula IC434, and reflection nebula, NGC2023.

Unfortunately, there were some weird reflections (top left) coming from the bright nearby star, Alnitak. Stacked FITS below if anyone wants some new data to practice with.

Taken November 2, 2013 from Lake San Antonio, CA, USA.

Higher resolution on Flickr: Barnard 33 - Horsehead Nebula

Stacked FITS data: Barnard 33 - Stacked FITS

Total integration: 290 mins (4 hr 50 mins)

Details, Equipment, & Software:
Telescope: Astro-Tech AT6RC w/ AT2FF (FL1370mm f/9)
Camera: Canon T3i (Full Spectrum, Gary Honis modified)
Mount: Orion Atlas EQ-G
Guide: Orion ST80 w/ SSAG
Capture: Backyard EOS (58x300s lights / darks / flats / dark flats)
Stacking: Nebulosity 3
Final Processing: StarTools & Photoshop CS6

Attached Files



#2 JoeR

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Posted 27 November 2013 - 10:07 PM

Very nice love the colors. NGC 2023 came out really well in this shot.

#3 Aquarist

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Posted 27 November 2013 - 10:09 PM

Wonderful image. Really love the colors and composition.

#4 TimN

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Posted 27 November 2013 - 10:41 PM

Very nice. Beautiful colors

#5 Rankinstudio

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Posted 27 November 2013 - 10:53 PM

Nice shot, that is impressive detail for a 6" scope!

#6 srosenfraz

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Posted 27 November 2013 - 11:37 PM

Excellent image, Derryk - some really nice color.

#7 SKYGZR

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Posted 28 November 2013 - 12:55 AM

That's some pretty good detail..and sometimes it's helpful to keep Altinak out of this field..nice framing without that "spotlight" shining in....

#8 nwinston

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Posted 28 November 2013 - 01:09 AM

Well done, Derryk! Looks very sharp and processed well.

#9 Darren1968

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Posted 28 November 2013 - 07:17 AM

Really great data. Your focus and tracking look perfect.
I tried processing your stacked data, but it looks like there are satellite streaks or reflections as you already stated on the left hand side, which I did not crop out.

Thanks for posting your data to try. I have not been out imaging lately.

I processed mainly in Star Tools, then did final color and contrast adjustments in PS.

Darren

Attached Files



#10 Eyegasms

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Posted 28 November 2013 - 09:16 AM

Fantastic detail! Well done.

#11 Derryk

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Posted 28 November 2013 - 11:09 AM

Thank you all for the wonderful comments.

Darren1968 - Great job processing! I really like your colors. I especially like the contrast you got on the lower neck of the horsehead.

I had originally framed the shot with Alnitak and the Flame Nebula but Alnitak was spoiling the shot (even in the unprocessed subs). I decided to move it slightly out of frame but still got a bit of the diffraction spikes. I cropped out most of the top and used the spot healing brush to remove the spike in the bottom left.

I don't notice it as much on the smaller spikes but the spike in the top left appears to be a double spike. Does this mean that one of the vanes is not exactly perpendicular and it is picking up the top and bottom edge of the vane?

#12 pfile

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Posted 28 November 2013 - 01:54 PM

usually double spikes like that are due to being out of focus. i assume that alnitak is probably out of focus due to being way out at the edge of the field.

you're probably okay, the in-focus spikes look perfect to me.

#13 pfile

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Posted 28 November 2013 - 03:44 PM

here's a shot at processing this data with pixinsight...

link to astrobin page and fullsize

Posted Image

#14 petemumbower

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Posted 28 November 2013 - 08:06 PM

Great image and processing. Thanks for sharing all this data from your trip.

#15 Derryk

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Posted 29 November 2013 - 11:45 PM

Great processing pfile. I enjoy seeing what can be done with PixInsight. Once I can dedicate some time, I am looking forward to giving PixInsight a try.

As for the double spike, I hadn't thought about it being out of focus. The spike in the bottom left looks normal, would an out of focus star only show one double spike? I am not too concerned as it is normally not noticeable but am just curious.

Thanks, Pete. It is my pleasure to be able to share the data.

#16 cdh79

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Posted 30 November 2013 - 08:08 AM

thanks for providing the data-file, that is really helpful!

this is my 2nd attempt in imaging processing at all, so obviously I still need lots of practice and i'm missing quite some knowledge, so any pointers would be helpful

used FITS Liberator and PS

http://www.astrobin.com/66287/

#17 waassaabee

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Posted 30 November 2013 - 11:44 AM

As for the double spike, I hadn't thought about it being out of focus. The spike in the bottom left looks normal, would an out of focus star only show one double spike? I am not too concerned as it is normally not noticeable but am just curious.


Alnitak is a triple star formation.. maybe you split it?

#18 Stargazer78

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Posted 01 December 2013 - 01:10 AM

My attempt at your data
Processing done in Nebulosity 3

My processing:

Adjust color background
Auto adjust color
Digital development
Then several minor iterations using levels
Adjust saturation
Then auto color balance.
Save in 16 bit tiff
Use paint shop pro to mike minor corrections

Posted Image

#19 mmalik

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Posted 01 December 2013 - 01:54 AM

My go at your data...; thanks for sharing!

PixInsight:
1. RAW File Conversion [Skipped]
2. Align/Combine/Crop [Skipped]
3. DBE
4. Histogram Transformation
5. HDR Multiscale Transform
6. ACDNR (Noise Reduction)
Saved as 16 bit TIFF for processing in Photoshop/ImagesPlus

Photoshop+:
7. Multiresolution Smooth-Sharpen (ImagesPlus)
8. Geometric Transform/Scale [0.7] (ImagesPlus)
9. Smoothing & Noise Reduction (ImagesPlus)
10. ProDigital ‘Deep Space NR’ and HLVG (Photoshop)
11. Saturation (Block: 1st pass) and Noise Reduction (Photoshop)
12. Star Size & Halo Reduction, and Saturation (ImagesPlus)
13. Saturation (Block: 2nd pass), Levels, Curves, Contrast, Brightness, Vibrance, and Color Balance (Photoshop)
Saved as JPG for posting

Larger file here... (Right-click-View original)

Processing instructions here...
Recombinant Processing discussion here...

Attached Files



#20 mmalik

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Posted 01 December 2013 - 02:33 AM

A fully processed crop (not a crop of JPG); you have some good data in there!

Larger file here... (Right-click-View original)

Attached Files








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