PixInsight > Monthly Contest

May 2012 Contest Images

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Javio:
The May edition of the 2012 PixInsight Monthly Astrophotography Contest is open. Send your images until May 20th. Please use this post ONLY to submit your images.

Good luck!

Nigel Ball:
My submission for May is my image of IC434 and M42 using data collected over a couple of years. Neighbours tree ruined the colour channels - long story  :-[

Equipment
Takahashi FSQ-106 at f/3.6, SBIG STL-11000, Astrodon Gen 2 LRGB filters, EQ6 mount

Data
Lum
15s, 60s, 300s and 600s subs

RGB
6 x 600s per channel

Processing details as follows

RGB :
* DBE on each channel stack
* Colour combine
* Background neutralisation
* Colour calibration
* SCNR - green
* HT
Lum:

* HDR composition
* DBE
* HT
* HDRWavelets
LRGB

* LRGB combination with Saturation=0.3
* Dynamic crop
* ACDNR - two passes for small scale and then medium scale noise
* PixelMath - to add some noise 'back in'
* Curves
* Histogram Transformation
* Curves - Colour Saturation
* Unsharp Mask
* Morpohological Transformation to reduce stars

Oleg Bryzgalov:
M101: The Pinwheel Galaxy and supernova SN 2011fe

This picture was photographed during March-May, 2012 in Khlepcha observatory, Ukraine.
Equipment: reflector S&D 254 mm. f/4.7
Mount WhiteSwan-180, camera QSI-583wsg, Tevevue Paracorr-2. Off-axis guidecamera Orion SSAG.
HaLRGB filter set Baader Planetarium.
L=30*4500 sec. bin.1, RGB: 18*450 sec. bin2, Ha: 8*900 sec. bin.2
Processed Pixinsight 1.7 and Photoshop CS5.
About supernova SN 2011fe: http://en.wikipedia.org/wiki/SN_2011fe

More information about  processing.
The image in each filter:
Routine procedures (calibrate, cosmetic correction, star alignment, Image Integration)

L channel:
Dynamic crop
DBE
HistogramTransformation
HDRMT with star mask

RGB:
Dynamic crop
DBE
RGB combine
BackgroundNeutralisation
ColorCalibration (reference - galaxy)
HistogramTransformation
CurvesTransformation - star color boost with mask
LRGB combine
HistogramTransformation

Further processed in Photoshop:
noise reduction, adding Ha (blending lighten) to R:100%, G and B:10% with mask.
levels.

Full size picture: http://olegbr.astroclub.kiev.ua/files/astrofoto/M101/M101_FULL_Oleg_Bryzgalov.jpg

Sincerely, Oleg.

jeffweiss9:
I submit this 7.6 hour LRGB of m51:

http://www.astrophotogallery.org/member-galleries/p9549-m51-lrgb-reprocessed.html

Scope used and reducer: APM 130/780 f/6 LW CNC II  (W.O. 110/132 FF)
Mount Used: Takahashi EM-200 Temma2
Camera Used: SBIG ST-2000XM Astrodon Gen2
Exposure: L: 33x8min (4.4hr), RGB:16x4min 2x2binned (3.2hrs)
Location: Mercy Hot Springs, CA
Seeing 1-10: 6 on 4/14/12, 8 on 4/20/12

PreProcessing:
Calibration in PI 1.7, with Cosmetic Correction script
StarAlignment, ImageIntegration

L:
Deconvolution with extracted PSF from DynamicPSF
DBE
MMT linear noise reduction with Lum mask

RGB:
RGB combination in LRGB
DBE
ColorCalibration
MMT linear noise reduction with Lum mask

LRGB:
STF transfer to Histogram Transformation
LRGB combination with saturation 0.2 (no chromatic noise reduction)
HDRMMT 4 layers
Histogram Transform
ACDNR
Curves Transform
MorphTransform star reduction with Dilated Lum mask
ColorSaturation

Clear skies,
-Jeff

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