Hemisphere:  Northern  ·  Constellation: Orion (Ori)
Sh2-261 in Ha-Oiii, 


Sh2-261 in Ha-Oiii
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Sh2-261 in Ha-Oiii

Technical card

Imaging telescopes or lenses: Tele Vue NP 101

Imaging cameras: Atik One

Mounts: Orion Atlas Pro EQ Orion Atlas Pro AZ/EQ-G

Guiding telescopes or lenses: Tele Vue NP 101

Guiding cameras: Atik GP

Software: SequenceGeneratorPro  ·  PixInsight  ·  PHD2

Filters: OIII 3nm  ·  Astrodon Ha 5mm

Dates:March 30, 2016

Astrodon Ha 5mm: 18x1200" -10C bin 1x1
OIII 3nm: 16x600" -10C bin 2x2

Integration: 8.7 hours

Avg. Moon age: 21.07 days

Avg. Moon phase: 61.39%

Basic astrometry details

Astrometry.net job: 1026971

RA center: 6h 8' 52"

DEC center: +15° 47' 34"

Pixel scale: 2.565 arcsec/pixel

Orientation: 92.285 degrees

Field radius: 0.775 degrees

Resolution: 1716x1338

Locations: Howling Moon Observatory, SoCal, CA, None


Lower's Nebula, in narrowband ... except I'm having problems with my Sii filter.

Note: There's an unusual feature showing up in my Oiii in the center. It has a lot of structure, but none of the references I've searched show a PN here.


Sky plot

Sky plot


Sh2-261 in Ha-Oiii,