PixInsight Forum (historical)
PixInsight => General => Monthly Contest (closed) => Topic started by: Javio on 2012 March 06 02:37:53
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The March edition of the 2012 PixInsight Monthly Astrophotography Contest is open. Send your images until March 20th. Please use this post ONLY to submit your images.
Good luck!
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This entry was sent by talbotj.
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An image of LBN 682 I took in the month of Nov 2011. This is a nice reflection nebula although very faint. It lies within an area of Ha emission which was only faintly visible without the Ha filtered image. This image is a combination HaLRGB image.
Date: 4-30 Nov 2011
Location: Ocean Springs, MS
Telescope: Stellarvue SV80ST2 f6
Camera: QSI 583
Filters: Astrodon 5nm Ha, LRGB
Mount: MI250
Image Capture: Maxim DL 5
Processing:
Calibrated and subframe alignment with PixInsight
Subframes stacked with image integration tool
DBE on stacked subframes
RGB combine
SCNR on RGB image
Ha combine with RGB using Vicent Peris method, although 20% Ha added to blue and 10% to green to account for H beta.
HaRGB stretch
Luminance Stretch
LRGB image created using LRGB process
color saturation on RGB
(http://www.starscapeimaging.com/resources/LBN682_SV80ST2_Nov11_800.jpg)
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Rosette Nebula: 55 subs, 4 minutes each
Imaging telescopes or lenses: CPC 1100 GPS
Imaging cameras: canon 1100D mod
Mounts: Celestron HD Wedge
Guiding cameras: Orion SSAG
Focal reducers: HyperStar3
Software: stacked in Images Plus, processed in Pixinsight
Filters: IDAS LPS
Higher resolution:http://astrob.in/4866/?r=885 (http://astrob.in/4866/?r=885)
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M42 RELOADED
Camera: Canon EOS Digital Rebel XSi - Filtro Type I
Telescope: William Optics 132 FLT - Focal Length 925 mm - f/7
Number of images:
217 x 8 seconds
62 x 2 minutes
38 x 4 minutes
15 x 10 minutes
Total Time 7:30 hours
ISO 800
In the last PixInsight workshop in Buenos Aires, Carlos Milovic teach us about how to eliminate the noise that generate the Canon XSi in exposures longer than 4 or 5 minutes when the temperature is highest than 25ºC, then I decided to reprocess the image that I had with that defect (15x10 minutes) and then recombine with the rest with HDRComposition Tool.
The Pattern is not removed with dark subtraction and the method consist in applying Fourier Transform to the image, and correct what causes the pattern in the DFT_magnitud image and then to combine again with the DFT_phase using the Inverse of Fourier Transform, and "magically" the lines disappear.
(http://1.bp.blogspot.com/-RgksIVa0mqI/T1qV1herdgI/AAAAAAAAAMU/iaTctKozqgg/s1600/Screenshot+at+2012-03-09+15:17:14.png)
The image looks like this. Should be deleted the two short vertical lines that appear on the horizontal line. It was magic for me, thanks Carlos.
(http://3.bp.blogspot.com/-wMvrIUPlxR4/T1qWA00zxwI/AAAAAAAAAMc/XgkQPJvN-ZI/s1600/Screenshot+at+2012-03-09+20:28:25.png)
I did this after debayer because it works better.
Following is the integration of 15x10 image and HDRComposition with the rest of images
The main steps in processing HDR were:
BackgroundNeutralization and ColorCalibration
Deconvolution with PSF and StarMask to protect the core of big stars.
HT followed with MaskedStrech
Protecting with starmask apply HDRMT
Noise Reduction with ACDNR to Lightness and Chominance
HDRMultiscaleTransformation protecting background and stars cores with rangemask.
LocalHistogramEqualizations protecting stars halos with exclusion Mask
CruvesTransformation variating rangemask to recover color an contrast in bright areas
Noise Reduction with ATWT
ColorSaturation
SCNR
ACDNR
Final Curves
(http://4.bp.blogspot.com/-cgFiJw6fnVU/T02PJqPFtLI/AAAAAAAAALk/aEcctaByIJo/s1600/ProximaSurM42_1600x1059.jpg)
Saludos,
Alejandro
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Posted originally over in the Gallery, but posted again here for the contest. 8)
M81 -- Spiral Galaxy in Ursa Major (http://obsballona.net/coppermine/displayimage.php?pid=219), February 25th 2012
Taken from Lake Riverside / Aguanga, California
Camera: ST-10XME
Filters: Astrodon LRGB V2
Scope: Planewave CDK 12.5
Luminance: 100 minutes (20 * 5 minutes)
RGB: 35 minutes each (7 * 5 minutes Binned 2x2)
Acquired in Maxim DL, controlled by CCDCommander
Data reduction and alignment in CCDStack
LRGB combine and all other processing done in PixInsight.
Saved as JPG from Photoshop.
(http://obsballona.net/coppermine/albums/userpics/10002/normal_M81_120225_LRGB_04.jpg) (http://obsballona.net/coppermine/displayimage.php?pid=219)
Direct link to full-sized image (http://obsballona.net/coppermine/albums/userpics/10002/M81_120225_LRGB_04.jpg)
Clear skies,
--Andy
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My "PixInsight" first light.....M81 and M82.
55 x 480 seconds shot with a 127mm f/7.5 refractor and QHY8PRO OSC CCD camera from the desert of western Arizona over 4 nights late last month.
A larger version is here: http://astrobin.com/full/6823/?mod=none (http://astrobin.com/full/6823/?mod=none)
(http://astrobin_images.s3.amazonaws.com/d5d0b5e5-c11b-4a4b-b1c9-5bb734cf7858_resized.jpg)
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Ok, for the fun of it, here's my ngc2359, Thor's Helmet,
HaLRGB from 3 nights at dark sites in SF Bay area; Ha from home (Sunnyvale, CA), 2/16/12-3/4/12
Scope used and reducer: APM 130/780 f/6 LW CNC II, W.O. 132/110 FF
Mount Used: Takahashi EM-200 Temma2
Camera Used: SBIG ST-2000XM Astrodon Gen2 & Orion UNB Ha
Exposure: Ha:L 13:20 (8min); RGB 20:18:14 (4min2x2); 7.9 hrs total
Processed in PI 1.7: Calibration, StarAlignment, ImageIntegration
L: DBE, Deconvolution (50iter), MMT, HDRMMT
RGB: DBE, Deconvolution (25iter), CC, MMT, HDRMMT
LRGB Combination, SCR, HT, MT, ACDNR
Ha:DBE, MMT, HDRMMT, MT, ACDNR
HaLRGB Combination in PS CS2 Hallas method
ColorSaturation in PI
Link to image:
http://www.astrophotogallery.org/member-galleries/p9189-ngc2359-thor-27s-helmet.html
Thanks,
-Jeff
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Captured using a Lunt 60 FTPT with B1200 backfilter and DMK41 camera using IC Capture
Stacked frames with Registax 5
Processed with Pixinsight using method posted on this forum by ManuelJ.
Used ATrousWaveletTransform to bring out detail.