Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  IC 1454  ·  IC1454  ·  PGC2783080
Getting plate-solving status, please wait...
Abell 81, 



    
        

            Gary Imm
Abell 81, 



    
        

            Gary Imm

Abell 81

Getting plate-solving status, please wait...
Abell 81, 



    
        

            Gary Imm
Abell 81, 



    
        

            Gary Imm

Abell 81

Imaging telescopes or lenses: Celestron EdgeHD 11

Imaging cameras: ZWO ASI 1600MM Cooled Pro

Mounts: Astro-Physics Mach1GTO

Guiding cameras: ZWO ASI 174 MM Mini

Software: Main Sequence Software Sequence Generator Pro  ·  Pixinsight  ·  Stark Labs PHD2 2.6.3

Filters: Astrodon Ha 31mm 5nm  ·  Astrodon OIII 31mm 3nm  ·  Astrodon Green 31mm Gen2 I-Series  ·  Astrodon Blue 31mm Gen2 I-Series  ·  Astrodon Red 31mm Gen2 I-Series

Accessory: Celestron OAG  ·  ZWO EFW 2″X7  ·  MoonLite Focuser for EdgeHD 11


Dates:Dec. 6, 2020Dec. 7, 2020Dec. 8, 2020

Frames:
Astrodon Blue 31mm Gen2 I-Series: 30x120" (1h) (gain: 139.00) -20C bin 1x1
Astrodon Green 31mm Gen2 I-Series: 30x120" (1h) (gain: 139.00) -20C bin 1x1
Astrodon Ha 31mm 5nm: 24x300" (2h) (gain: 300.00) -20C bin 1x1
Astrodon OIII 31mm 3nm: 24x300" (2h) (gain: 300.00) -24C bin 1x1
Astrodon Red 31mm Gen2 I-Series: 30x120" (1h) (gain: 139.00) -20C bin 1x1

Integration: 7h

Avg. Moon age: 21.61 days

Avg. Moon phase: 55.60%


Astrometry.net job: 4205683

RA center: 22h 42' 24"

DEC center: +80° 26' 30"

Pixel scale: 0.282 arcsec/pixel

Orientation: 87.065 degrees

Field radius: 0.101 degrees


Resolution: 2055x1576

Locations: Backyard (Mag 20.8 - Bortle 4.5), Onalaska, Texas, United States

Data source: Backyard

Description

This object, also known as IC 1454, is a rarely imaged planetary nebula located 14,000 light years away in the constellation of Cepheus at a declination of +80 degrees. The PN spans 40 arc-seconds in our apparent view, which corresponds to a diameter of almost 3 light years.

This PN is the most northern of all of the Abell PNs. Very little information exists on this object. The central star is barely visible. The signal is primarily OIII and the overall bluish donut shape reminds me of IC 5148.

I find it interesting to compare this image with my previous 2019 Abell 81 image, taken with my shorter focal length Tak 130 (1000 mm) refractor, which was the first image of this object on Astrobin at that time. The 2 images are very similar, which illustrates the seeing-limited impact of imaging with longer focal length setups if seeing is only average on a given night.

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