M97 in HOO (Bruce Donzanti)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 97 · NGC 3587 · Owl Nebula · PK148+57.1

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M97 in HOO

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M97 in HOO

I tried capturing a better image of the planetary nebula M97 than I have in the past at f/10 but was limited by shorter imaging hours than anticipated (I was hoping for around 25 hrs or so but got only half that) and a couple of nights of below average seeing at my Bortle 7 sky. Despite the limited hours, seeing conditions, and moon illumination 67-84%), I was very pleased with the data and final image. To help alleviate moon effects on the OIII data, I arranged the OIII captures during the furthest degrees away as possible (i.e., 40-45 degrees angular separation). Given my sky conditions, I think I am going back to using my 0.7x reducer despite not really liking it.

Another change was that I used a gain of 300 vs. the usual 100 for this image. I also tried the new GHS script, but I did not notice much of a difference on this object vs. the standard HT tool in PI. I suspect objects with much more global nebulosity might be better to take advantage of the GHS script. Also, I still need to practice learning its new features. Finally, I used the Ha stars for this image as I just did not have time to capture RGB stars.

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Planetary Nebulae
Light Polluted skies
ASI 6200 MM Pro
Schmidt-Cassegrain Telescope (SCT) Imagers
Imaged with N.I.N.A.
Florida / Georgia Imagers
Hydrogen and Oxygen Narrowband Only!
Narrowband imaging
Suburban Astrophotography
Images from the EdgeHD Series

A Collection of Recent and Favorite Images
C11" EdgeHD

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Status	Advanced success
Started	...
Astrometry.net job	5672340
PixInsight job	BRMFMQZH8HIHK9JWMMIYSB0SF66MQ8VA
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h14m47s.654
RA (top/left)	11h15m47s.286
RA (top/right)	11h14m26s.983
RA (bottom/right)	11h13m48s.540
RA (bottom/left)	11h15m08s.184

Dec (center)	+55°01′05″.88
Dec (top/left)	+55°01′34″.44
Dec (top/right)	+55°09′07″.72
Dec (bottom/right)	+55°00′35″.47
Dec (bottom/left)	+54°53′03″.54

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