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Into the core of the Rosette Nebula (NGC2237), 



    
        

            Andrew Klinger

Into the core of the Rosette Nebula (NGC2237)

Technical card

Imaging telescopes or lenses:William Optics GT-81

Imaging cameras:ZWO ASI1600MM-Cool

Mounts:Orion Sirius EQ-G (HEQ5)

Guiding telescopes or lenses:Orion 50 mm Guide Scope

Guiding cameras:Orion Star Shoot Auto Guider

Focal reducers:William Optics Flat 6A

Software:Sequence Generator ProPHD2Cartes du CielEQMODPixInsight

Filters:Astrodon OIII 3nmAstrodon SII 3nmHa 5nm

Accessory:PoleMaster


Dates:Jan. 6, 2020Feb. 26, 2020

Frames:
Ha 5nm: 168x300" (gain: 200.00) -20C bin 1x1
Astrodon OIII 3nm: 48x600" (gain: 200.00) -20C bin 1x1
Astrodon SII 3nm: 51x600" (gain: 200.00) -20C bin 1x1

Integration: 30.5 hours

Darks: ~64

Flats: ~30

Bias: ~200

Avg. Moon age: 6.48 days

Avg. Moon phase: 43.57%

Bortle Dark-Sky Scale: 4.33


Basic astrometry details

Astrometry.net job: 3530574


Resolution: 1920x1080

Locations: Atoka dark site, Atoka, Oklahoma, United States; Backyard, Flower Mound, Texas, United States

Data source: Backyard

Description

Using my Rosette Nebula data from Jan 2020, I made a large crop on this interesting core region. In this false-color narrowband image, the warmer tones represent Hydrogen and Sulfur, while the blues represent Oxygen.

Equipment:
OTA: William Optics GT81 w/0.8x reducer (382mm fl at f/4.7)
74mm aperture stop-down ring (brings scope to f/5.2)
Mount: Orion Sirius EQ-G (HEQ-5)
Guidescope: Orion 50mm guidescope
Guiding camera: Orion StarShoot Autoguider
Imaging camera: ZWO ASI1600MM-Cool

Accessories:
DeepSkyDad Autofocuser AF1
QHYCCD PoleMaster

Software:
SGP
PHD2
CdC
PixInsight

Acquisition:
Location: Flower Mound, TX (Bortle 7) for Ha, Atoka, OK (Bortle 3) for SII and OIII
Dates: 1/6/20, 1/7/20, 2/26/20, 2/27/20, 2/28/20
Gain: 200 Offset: 50
Camera temp: -20C
Ha: 168x300" Astrodon 5nm 1.25"
SII: 51x600" Astrodon 3nm 1.25"
OIII: 48x600" Astrodon 3nmn 1.25"
Total integration time: 30hr 30min
64x darks per calibration (master from library)
30x flats per calibration
200x bias per calibration (master from library)

Comments

Author

ak_astro
Andrew Klinger
License: None (All rights reserved)
2150
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Histogram

Into the core of the Rosette Nebula (NGC2237), 



    
        

            Andrew Klinger

In these public groups

Narrowband imaging