Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 97  ·  NGC 3587  ·  Owl nebula  ·  PK148+57.1
Getting plate-solving status, please wait...
Exafilter Owl Nebula, 



    
        

            Edoardo Luca Radice (Astroedo)
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Exafilter Owl Nebula

Getting plate-solving status, please wait...
Exafilter Owl Nebula, 



    
        

            Edoardo Luca Radice (Astroedo)
Powered byPixInsight

Exafilter Owl Nebula

Acquisition details

Dates:
March 30, 2019
Frames:
Baader H-beta 8.5nm: 30×300(2h 30′) bin 1×1
Baader Planetarium Baader B: 21×180(1h 3′) bin 1×1
Baader Planetarium Baader R: 21×180(1h 3′) bin 1×1
Baader Planetarium Baader g: 21×180(1h 3′) bin 1×1
Baader Planetarium Ha 7nm: 32×300(2h 40′) bin 1×1
Baader Planetarium OIII 8.5nm: 31×300(2h 35′) bin 1×1
Integration:
10h 54′
Avg. Moon age:
24.23 days
Avg. Moon phase:
28.57%
Mean SQM:
18.50

RA center: 11h14m46s.909

DEC center: +55°0107.21

Pixel scale: 0.895 arcsec/pixel

Orientation: 164.013 degrees

Field radius: 0.226 degrees

More info:Open 

Resolution: 1460x1094

File size: 462.6 KB

Locations: Castenedolo, Castenedolo, Italy

Data source: Backyard

Description

Imaging from highly light-polluted skies is always a challenge.

RGB imaging is nearly impossible, narrow band imaging cannot reproduce "true" colors of objects...

... or not?

With the right technique one can get narrowband data from selected objects (emission nebulae) and recover star colors from broad band RGB images.

This image comes from the composition of 6 filters: RGB for star colors, H alpha, OIII and H beta for the nebula.

Unfortunately, due to the high Light Pollution, it was impossible to get better data for the dimmer object, but i'm quite happy of the result under a 18.5 mag/arcsec SQM sky

Comments

Sky plot

Sky plot

Histogram

Exafilter Owl Nebula, 



    
        

            Edoardo Luca Radice (Astroedo)

In these public groups

Imagers of Italy
Narrowband imaging