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Imaging telescope or lens:Celestron RASA
Imaging camera:ZWO ASI 1600MM-Cooled ASI1600MM Cooled
Guiding telescope or lens:Orion 80mm GuideScope Guide scope
Guiding camera:Orion SSAG
Accessories:Celestron Focus Motor , Adapter M42 T2/T2 M42T2 , Baader Ufc 2" #2459112 , Baader Ufc S70 RASA 8 #2459136 , Baader Ufc filter base#2459110 , Baader Ufc T2 adapter #2459115 , Baader Universal Filter Changer (UFC) , Bahtinov mask , Baader Planetarium Rasa 8 UFC , Orion SSAG 80mm
Astrometry.net job: 3207241
RA center: 6h 32' 17"
DEC center: +4° 52' 51"
Pixel scale: 3.938 arcsec/pixel
Orientation: 83.295 degrees
Field radius: 1.549 degrees
Locations: UGG-419 Observatory, Canada, Canada
Data source: Backyard
This is my first narrowband image using the Baader hydrogen-alpha and oxygen III filters.
1- Ha data in the luminance channel
2- Ha data in the red channel
3- O-III data in the blue channel
4- Green channel empty
For the green channel, I will get the S-II later.
The green channel was left empty, and at this point I am not sure if oxygen data should go in the green channel.
The learning curve is steep in transitioning from osc to narrowband monochrome image processing. I wish to thank Mr. Uwe Deutermann for his help with this project.
Stacking of mono fits images is very different than osc fits file and I had to figure out a few things with Deep space stacker (DSS). What may not be obvious in DSS, is when you select a reference frame, that reference frame will apply to other groups, in my case the Oxygen III data. I guessed that part, and my Ha and O-III fit files where aligned, except for perhaps 50 pixels at the border.
With mono images, each group (ie. HA, O-III) must be processed separately with the flats acquired for each filters. I stacked, the Ha grey files with darks, ha-flats and bias files. The ha stacked files are saved as the ha-fits. Followed by oxygen data, in DSS, I deselected the Ha lights, and Ha flats, but kept the darks and bias files selected and stacked the oxygen group lights, and oxygen flats to create a Oxygen-III grey stacked file.
If you started your journey with osc, be prepared to have a few learning when going into creating the different grey files for each of the channels, luminance-red-green and blue.
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