NGC7293 - Helix Nebula (Chris Jensen)

Celestial hemisphere: Southern · Constellation: Aquarius (Aqr) · Contains: HD212949 · HD212980 · HD213055 · HD213056 · HD213069 · HD213070 · Helix Nebula · NGC 7293

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NGC7293 - Helix Nebula

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NGC7293 - Helix Nebula

I find myself returning to the Helix Nebula each September as I think it is a deceptively difficult target to shoot. Previous capture efforts were done with a Zenith Star 61 at 360mm, then last year and this year with an 800mm reflector. Last year, I invested 24.5 hrs of imaging time into it in Sii, Ha and Oiii with 180sec exposures and at the time, I was happy with the result. But looking back, I really wanted to try and pull out details in the outer shells of gas and I didn't even get close with the 2022 version. This year, having gotten better with my set up and tracking performance, I wanted to put more hours into the Ha data and try longer exposures. I have ended up using 600 sec exposures and 29 hours of total time for Ha and 240 sec exposures and 7.4 hrs for Oiii. Pretty happy with the detail in the second shell but I know that even more faint Ha is there. My thoughts are that I might try and push for a 900 or 1200 sec exposure series on Ha to see if I can get the really faint outer shells to show up further than the vague hint that I have captured so far.

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Southern Hemisphere Astro

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Status	Advanced success
Started	...
Astrometry.net job	8488344
PixInsight job	TU47QRKTVACW6ZUABQXZVZ1W7N5XCRFL
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h29m37s.79
RA (top/left)	22h26m45s.90
RA (top/right)	22h29m15s.24
RA (bottom/right)	22h32m31s.68
RA (bottom/left)	22h30m00s.15

Dec (center)	-20°50′11″.7
Dec (top/left)	-20°32′38″.9
Dec (top/right)	-21°33′55″.4
Dec (bottom/right)	-21°07′34″.5
Dec (bottom/left)	-20°06′27″.8

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NGC7293 - Helix Nebula

NGC7293 - Helix Nebula

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NGC7293 - Helix Nebula

NGC7293 - Helix Nebula

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