Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Getting plate-solving status, please wait...
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


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

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 job: 3530574

Resolution: 1920x1080

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

Data source: Backyard


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.

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

DeepSkyDad Autofocuser AF1
QHYCCD PoleMaster


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)



Andrew Klinger
License: None (All rights reserved)


Into the core of the Rosette Nebula (NGC2237), 


            Andrew Klinger

In these public groups

Narrowband imaging