Sh2-129 and OU4 (Timothy Martin)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: 3 Cep) · 3 eta Cep · B148 · B149 · B150 · B152 · HD197734 · HD198149 · HD198300 · HD198654 · HD198662 · HD199120 · HD199306 · HD199354 · HD199937 · HD199967 · HD200205 · HD200386 · HD201063 · HD201344 · HD201429 · HD202214 · HD202380 · HD203025 · HD203232 · HD203265 · HD203338 · HD203339 · HD203374 · HD203534 · And 24 more.

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Sh2-129 and OU4

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Sh2-129 and OU4

This is by far the most challenging single frame I've ever shot. I spent all summer on it last year shooting more than 130 hours with an ASI2600MC and a Triad Ultra filter, but OU4 just wouldn't come out of the data. This time around, it was 52 hours using an ASI6200MM and Antlia 3nm filters. Sh2-129 and OU4 are strictly HOO. But because this is part of a larger mosaic I'm working on, I also shot SHO on the surrounding region.

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E

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Description: BXT and NXT applied

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Sharpless2 Objects
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ASI 6200 MM Pro
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PixInsight Addicts
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Emission Nebulas
Planetary Nebulas

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	7500746
PixInsight job	C4SPFBV5LCDBNDE4XOV3QSFKN2F5NFX6
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h04m08s.64
RA (top/left)	21h26m44s.59
RA (top/right)	20h41m47s.83
RA (bottom/right)	20h43m48s.45
RA (bottom/left)	21h24m10s.17

Dec (center)	+60°22′07″.1
Dec (top/left)	+61°59′31″.5
Dec (top/right)	+62°02′48″.7
Dec (bottom/right)	+58°31′56″.8
Dec (bottom/left)	+58°29′15″.8

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Sh2-129 and OU4

Sh2-129 and OU4

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Sh2-129 and OU4

Sh2-129 and OU4

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