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Contains:  NGC 1999
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NGC 1999 DSW in LRGB

Technical card

Imaging telescope or lens:RC Optical 14.5”

Imaging camera:SBIG STX-16803

Mount:Paramount ME

Guiding telescope or lens:RC Optical 14.5”

Guiding camera:SBIG STX-16803

Software:PixInsight

Filters:Astrodon BAstrodon GAstrodon RAstrodon L

Resolution: 3991x3901

Dates:Nov. 18, 2017Nov. 19, 2017Nov. 21, 2017Dec. 16, 2017

Frames:
Astrodon B: 16x1200" bin 1x1
Astrodon G: 17x1200" bin 1x1
Astrodon L: 17x1200" bin 1x1
Astrodon R: 20x1200" bin 1x1

Integration: 23.3 hours

Avg. Moon age: 7.89 days

Avg. Moon phase: 2.96%

Astrometry.net job: 2043417

RA center: 84.050 degrees

DEC center: -6.653 degrees

Pixel scale: 0.551 arcsec/pixel

Orientation: 16.138 degrees

Field radius: 0.427 degrees

Locations: Deep Sky West, Rowe, NM, United States

Description

This is NGC 1999 from DSW RCOS data taken in November through December 2017 in Orion. It is located 1,500ly distant. It is a bright reflection nebula due to V380 Orionis, a variable star. The dark triangular region in the middle is particularly dark nebula in the middle of the otherwise bright nebula. Interestingly, it has been determined that this is actually a particularly empty space as opposed to a particularly dense dusty region.

The image is composed of LRGB. This was an interesting choice on the part of DSW as opposed to NB imaging. As a result, my color calibration turned out to be largely a deep bloody red color with some bits of blue above the brightest core region of the nebula. I did use PhotometricColorCalibration in PI, so the coloring is supposedly based on scientific-based calibration. The stars are quite saturated and only show some measure of coloring in their halos. Should I attempt to process this again I will make more effort on dimming the stars so that they are not so dominant in the image. Still I am impressed by the level of detail that came out of the nebula. I applied HDRMT in order to bring out more of the brightest region surrounding the dark region.

Comments

Author

BenKolt
Ben Koltenbah
License: None (All rights reserved)
3348
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Revisions

B

Synthetic L Channel Image

C

Inverted Synthetic L Image

D

Annotated L Image

Sky plot

Sky plot

Histogram

NGC 1999 DSW in LRGB, 





    
        

            Ben Koltenbah