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I agreeImaging telescope or lens:William Optics GT71 71mm f/5.9 Apo Refractor
Imaging camera:ZWO ASI1600MM Cooled PRO
Mount:Orion Atlas EQ-G
Guiding telescope or lens:Orion 50mm Guide Scope with helical focusing
Focal reducer:William Optics 0.8X Field Flattener
Software:Main Sequence Software Sequence Generator Pro, v3.0, Adobe Lightroom CC, Pleaides PixInsight Core 1.8
Filters:Astrodon OIII 3nm-31mm, Astrodon SII 3nm-31mm, Astrodon Ha 3nm-31mm
Resolution: 2565x3848
Dates:Dec. 29, 2018, Dec. 31, 2018, Jan. 1, 2019
Frames:
Astrodon Ha 3nm-31mm: 203x180" (gain: 139.00) -15C bin 1x1
Astrodon OIII 3nm-31mm: 100x180" (gain: 139.00) -15C bin 1x1
Astrodon SII 3nm-31mm: 87x180" (gain: 139.00) bin 1x1
Integration: 19.5 hours
Darks: ~30
Bias: ~50
Avg. Moon age: 23.92 days
Avg. Moon phase: 32.15%
Bortle Dark-Sky Scale: 4.00
Astrometry.net job: 2646866
RA center: 99.908 degrees
DEC center: 10.265 degrees
Pixel scale: 2.308 arcsec/pixel
Orientation: 206.786 degrees
Field radius: 1.482 degrees
Locations: Monterey Pines Observatory, Monterey, California, United States
Data source: Backyard
This is a reprocessing of data I collected at the end of 2018. In prior versions I used a standard SHO approach and HST palette. This time I used Steve Milne's "natural" narrowband Pixinsight pixel math formula. I also cropped and rotated the image to give it a bit more drama. At the top of the image is the Cone Nebula and beneath it, the Christmas Tree Cluster. Moving down the image are the Fox Fur Nebula and the Snowflake Cluster. And, yes, it is still cloudy in Northern California.
Bit of clean up.
| SF Bay Area Imagers |
| Suburban Astrophotography |
| ZWO ASI1600MM/QHY163M |
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