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
Hemisphere:  Northern  ·  Contains:  NGC 1491, NGC1491, Sh2-206
Getting plate-solving status, please wait...
NGC 1491 in HOO with OSC, 


            Cedric Raguenaud
Powered byPixInsight

NGC 1491 in HOO with OSC

Imaging telescopes or lenses: Skywatcher 300/1500

Imaging cameras: QHYCCD 183C

Mounts: Skywatcher EQ8 pro

Guiding telescopes or lenses: TS-Optics OAG

Guiding cameras: ZWO ASI120MM

Focal reducers: Baader MPCC Mark III Coma Corrector

Software: Gimp 2.10  ·  PixInsight 1.8 Ripley  ·  Sequence Generator Pro

Filters: STC Dual Narrowband filter

Accessory: Home made focuser

Dates:Sept. 11, 2020Sept. 12, 2020Sept. 13, 2020Sept. 15, 2020Sept. 16, 2020

Frames:STC Dual Narrowband filter: 88x600" (gain: 16.00) -15C bin 1x1

Integration: 14.7 hours

Avg. Moon age: 25.66 days

Avg. Moon phase: 18.99%

Bortle Dark-Sky Scale: 4.00

Mean SQM: 21.57 job: 3874837

RA center: 4h 3' 16"

DEC center: +51° 19' 36"

Pixel scale: 0.763 arcsec/pixel

Orientation: -7.042 degrees

Field radius: 0.263 degrees

Resolution: 2048x1405

Locations: ORCA Observatory, Near Matha, Charente-Maritime, France

Data source: Own remote observatory

Remote source: Non-commercial independent facility


The OIII layer was extremely noisy due to faintness of the emission, which was impossible to remove. As a photographer noise doesn't bother me, on the contrary, I like the texture. But for astronomy it's more usual to remove all noise. So I park this here to wait for clear skies or next year to add signal to the OIII layer.



Cedric Raguenaud
License: None (All rights reserved)

Sky plot

Sky plot


NGC 1491 in HOO with OSC, 


            Cedric Raguenaud

In these public groups

STC Dual Narrowband filter images