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Charlie HeinAdministrator

Reged: 11/02/03

Loc: 26.06.08N, +80.23.08W
May13 Semi Finals Run-Off!
      #5913196 - 06/10/13 02:07 PM

We have a run-off for the May 2013 CCD Imaging Semi-Finalist in the Cloudy Nights Imaging/Sketching Contest. Please vote for your favorite image to send to the Finals!


Centaurus A galaxy NGC 5128.
From Melbourne Australia outer suburb on May 9th at zenith.

Telescope: 8" f6 Newt.
Modified NEQ6 pro mount.
TS9 OAG with Lodestar guider & PHD guiding. Baader RCC.
12 frames at 10 minutes each - total integration time 2 hours, bin 1x1.
Darks & flats applied in DSS.
3 x 10 minutes each of LRGB with QHY9 mono camera at -30C.
Gain 5% offset 100.
Used an Astronomik CLS-CCD 2" ALP filter in front of all filters.
120s frames each of RGB used for bright stars.
Processing with: DSS, Fits Liberator, PS CS5, Fitswork4.
Crop from center of larger frame as 2 x drizzle median stack.
See full frame in flickr.

Larger 1600 pixel wide version - press F11 - here:

Terry R

Eta Carinae Nebula in narrowband

Imaged from Melbourne, Australia (15 km from CBD). 15 hours total.

CCDStack2 was used to calibrate, register, normalize, perform data rejection, and final stacking. Final combining of the data to false colour was performed in Photoshop 6.

The SII data was mapped to the red channel, Ha to green, and OIII mapped to the blue channel.

Image details:
12 X 25 min in SII 8nm
13 X 25 min in Ha 7 nm
13 X 25 min in OIII 8.5 nm

Vixen R200SS with comma corrector (f4 8 inch newt) stock focuser
Astro-Physics AP900 mount.
First generation ST-8300 mono running at -15C
Baader Narrowband Filters: SII 8nm, H-alpha 7 nm, and OIII 8.5nm



The Virgo Cluster
Date: 05/11/2013
Location: Anza, CA
Telescope: Takahashi FSQ106EDX-III
Mount: Losmandy G11
Camera: Moravian Instruments G3-11000
Filters: Astrodon LRGB
Total Exposure: ~5 Hours
Full size image: The Virgo Cluster @

Please note that voting will conclude on June 12th at Midnight ET.

Many thanks to all who took part in the contest!

Please choose your favorite
Users may choose only one (73 total votes)
22 30%
Terry R
30 41%
21 28%

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Reged: 01/17/09

Loc: USA
Re: May13 Semi Finals Run-Off! new [Re: Charlie Hein]
      #5913757 - 06/10/13 06:42 PM

Great work all. This is a nice selection. It'll be interesting to see how it plays out. The saturation is well done in all preserving that ethereal deepsky glow about it.


Edited by azure1961p (06/10/13 06:43 PM)

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Post Laureate

Reged: 06/15/09

Loc: Melbourne Australia.
Re: May13 Semi Finals Run-Off! new [Re: azure1961p]
      #5918329 - 06/13/13 08:24 AM

Congrats Terry -
good that someone from Melbourne Australia has done well.
The contest was a lot of fun & your data
made for an interesting new look at Eta.


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Terry R

Reged: 01/31/13

Loc: Australia
Re: May13 Semi Finals Run-Off! new [Re: alpal]
      #5919383 - 06/13/13 07:19 PM

Thank you Allan. Eta is a pretty cool object. I must say, all the shots submitted were very nice. What I really like was their natural look. Nice and smooth, and not over processed.


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