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Equipment:
OTA: William Optics GT81 w/0.8x reducer (382mm fl at f/4.7)
Mount: Orion Sirius EQ-G (HEQ-5)
Guidescope: Orion 50mm guidescope
Guiding camera: Orion StarShoot Autoguider
Imaging camera: ZWO ASI1600MM-Cool
Software:
SGP
PHD2
CdC
PixInsight
Acquisition:
Location: Flower Mound, TX for Ha(Bortle 7), Atoka, OK for RGB(Bortle 3)
Dates: 10/23/17, 11/24/17, 12/8/17, 12/12/17
Gain: 200 Offset: 50 for Ha
Gain: 76 Offset: 15 for RGB
Camera temp: -20C
Ha: 164x300" Astrodon 5nm
R: 25x180"
G: 22x180"
B: 26x180"
Total integration time: 17hrs 19min
64x darks per calibration (master from library)
30x flats per calibration
200x bias per calibration (master from library)
Preprocessing:
Batch PreProcessing script to generate calibrated images
StarAlignment to register all frames to the reference
LocalNormalization of all registered frames (per channel)
ImageIntegration of each channel
DrizzleIntegration of each channel
DynamicCrop each master
DBE each master
Ha Processing:
Deconvolution
HistogramTransformation x2
Duplicated the image to create a starless version, using a starmask and several iterations of MMT and MT. Then pushed the faint nebulosity in the starless version using PixelMath expression: "1-(1-$T)*(1-$T)"
Combined the starless version with the image using PixelMath expression "F=0.2; (1-(1-$T)*(1-s)*F)+($T*~F)" (s=starless photo).
LocalHistogramEqualization with inverted starmask
MLT for sharpening
HistogramTransformation to move black point in
RGB Processing:
Using PixelMath, blended linear Ha with linear masters (50% into R, 10% into B, 5% into G)
ChannelCombination to create RGB
PhotometricColorCalibration
SCNR green
TGV and MMT noise reduction (via Jon Rista's method)
HistogramTransformation x3
Combined Ha to RGB using LRGBCombination with Ha applied as a mask
HistogramTransformation to stretch image brighter
PixelMath with a StarMask to add the original RGB stars back into the image (they looked weird beforehand)
CurvesTransformation for a small stretch
SCNR green
CurvesTransformation for slight saturation
ACDNR
Resampled to 50% for web posting
LEGAL DISCLAIMER: I Do Not Condone Any Acts Of Vandalism Nor Do I Participate In Such Criminal Activity. I Am Simply An Observant and Take Photos Of This Graffiti You Have Come Across. ALSO I Will Not Condone Any Usage Of My Photos To Support Any Legal Matter Involving These Acts Of Vandalism Therefore YOU ARE NOT WELCOME TO VIEW OR TAKE THIS MATERIAL For ANY Purpose...
pincushion in a tin. I've been wanting to make some in vintage tins, but haven't found any I really like yet. Plus, the advertising pics would not really show if I made a pincushion with the bottom of the tin.
LEGAL DISCLAIMER: I Do Not Condone Any Acts Of Vandalism Nor Do I Participate In Such Criminal Activity. I Am Simply An Observant and Take Photos Of This Graffiti You Have Come Across. ALSO I Will Not Condone Any Usage Of My Photos To Support Any Legal Matter Involving These Acts Of Vandalism Therefore YOU ARE NOT WELCOME TO VIEW OR TAKE THIS MATERIAL For ANY Purpose...
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