IC-417 The Spider and the Fly NGC-1931 (Steve Argereow)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: 24 Aur · 24 phi Aur · HD243406 · HD243426 · HD243461 · HD243522 · HD243572 · HD243607 · HD243657 · HD243680 · HD243840 · HD243871 · HD244060 · HD244096 · HD244111 · HD244167 · HD244283 · HD281060 · HD281061 · HD281145 · HD281146 · HD281147 · HD281148 · HD281152 · HD35295 · HD35314 · HD35327 · HD35520 · HD35546 · HD35556 · And 14 more.

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IC-417 The Spider and the Fly NGC-1931

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IC-417 The Spider and the Fly NGC-1931

Note: This is the first really long exposure I have taken with my L-Ultimate 2" filter, on
an object that is fairly dim.  Despite having taken 147 Sub's I still found the background
grainy even with flats and Bias. I probably should have mixed in some Sub's with just
an IR/UV Cut filter. That possibly may have cleaned this up a bit. On the next moonless
night I'll add some several hours of these.

IC 417 "The Spider Nebula" is an[b] [/b]emission nebula in the constellation Auriga, lying about 10,000
light years away.  The glowing center of the nebula is energized by the hot, massive blue stars
embedded within.  New stars are being formed in the ovals left of centre and the surrounding
nebula. NGC 1931"The Fly" is the compact oval nebula at the bottom and approximately 10
light-years in diameter.

Information Credits: Wikipedia

Telescope: Explorer Scientific 127mm CF APO Refractor f/7.5 (952mm Focal Length)
Explore Scientific X0.7 Reducer f/5.25 (667mm Focal Length)
Mount IOptron CEM40
Camera ZWOASI2600MC-Pro Temp -10C, Binning 1 x 1, Gain 100 Offset 50
ZWO EFW

30 X 180 Second Exposures W/Optolong L-Ultimate (3nm) Filter
40 X 240 Second Exposures W/Optolong L-Ultimate (3nm) Filter
58 X 300 Second Exposures W/Optolong L-Ultimate (3nm) Filter
19 X 420 Second Exposures W/Optolong L-Ultimate (3nm) Filter
20 Dark Frames/50 Flats/30 Bias
Total Integration Time: 11 Hours 13 Minutes

Acquisition with SharpCap
Stacked with Astro Pixel Processor
Guiding PHD2
Processed with Astra Image/GIMP
Photo taken from Seven Lakes, NC Bortle 4.5

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Status	Advanced success
Started	...
Astrometry.net job	7078228
PixInsight job	IBCOBHKYEP8TKFUGBZ4O6J0WAEFIOJYQ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h28m15s.28
RA (top/left)	05h24m48s.61
RA (top/right)	05h25m06s.30
RA (bottom/right)	05h31m39s.20
RA (bottom/left)	05h31m27s.16

Dec (center)	+34°27′40″.2
Dec (top/left)	+35°02′02″.0
Dec (top/right)	+33°49′32″.7
Dec (bottom/right)	+33°52′56″.3
Dec (bottom/left)	+35°05′28″.8

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IC-417 The Spider and the Fly NGC-1931

IC-417 The Spider and the Fly NGC-1931

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