Hemisphere:  Northern  ·  Constellation: Auriga (Aur)  ·  Contains:  PK173+02.1  ·  PK173+03.1  ·  Sh2-231  ·  Sh2-232  ·  Sh2-233  ·  Sh2-235
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            Gary Imm
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Getting plate-solving status, please wait...


            Gary Imm
Powered byPixInsight


Imaging telescopes or lenses: Takahashi TOA-130NFB

Imaging cameras: ZWO ASI 6200 MM Pro

Mounts: Astro-Physics Mach1GTO

Guiding cameras: ZWO ASI 174 MM Mini

Software: Adobe Inc Lightroom Classic  ·  Main Sequence Software Sequence Generator Pro  ·  Pleaides Astrophoto PinInsight 1.8  ·  Adobe Inc Adobe Photoshop CC 2021  ·  Stark Labs PHD2 2.6.3

Filters: Chroma Red 2" unmounted  ·  Chroma Ha 3nm  ·  Chroma Blue 2" unmounted  ·  Chroma Green 2" unmounted

Accessory: ZWO M68 OAG  ·  ZWO EFW 2″X7  ·  Takahashi Flattener TOA-67  ·  Feathertouch Focuser Boss II Electronic Focusing Control

Dates:Jan. 15, 2021Jan. 16, 2021

Chroma Blue 2" unmounted: 30x120" (gain: 0.00) -20C bin 1x1
Chroma Green 2" unmounted: 30x120" (gain: 0.00) -20C bin 1x1
Chroma Ha 3nm: 24x300" (gain: 100.00) -20C bin 1x1
Chroma Red 2" unmounted: 30x120" (gain: 0.00) -20C bin 1x1

Integration: 5.0 hours

Avg. Moon age: 2.87 days

Avg. Moon phase: 9.25%

Astrometry.net job: 4435834

RA center: 5h 42' 31"

DEC center: +36° 11' 52"

Pixel scale: 0.880 arcsec/pixel

Orientation: 1.725 degrees

Field radius: 1.177 degrees

Resolution: 8000x5365

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

Data source: Backyard


This object is one of several HII regions located in the constellation of Auriga at a declination of +36 degrees.

As shown in the mouseover, the largest region is Sh2-232. The brightest region to the lower right is Sh2-235. To the right of that is Sh2-231, and then finally the smallest HII region, Sh2-233. Interesting that Sh2-234 is located quite some distance away, far out of frame. My closeup image of is Sh2-235 is here.

I like the bright HII bands and the dark dust lanes which flow through Sh2-232. This beautiful object has the sordid nicknames of the Jelly Doughnut Nebula and the Pumpkin Nebula.

Seen near the center of Sh2-232, and identified in the mouseover, is the planetary nebula PK173+03.1. A second PN, PK173+02.1, is also shown on the mouseover. However, as you can tell from its irregular shape, this object is not a PN and instead is a HII region.