NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length (Greg Erianne)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · HD220057 · LBN 548 · LBN 549 · LDN 1231 · NGC 7635 · Sh2-162

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NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length

Revision title: NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length with Ha/OIII and SII/Hb filters

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NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length

Revision title: NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length with Ha/OIII and SII/Hb filters

he Bubble Nebula is a beautiful HII emission nebula in the Constellation Cas and is about 7,000 – 8,000 light years (ly) away from Earth, and about 7,000 ly wide.At the center of the Bubble is SAO 20575, a very large, bright (magnitude -5.5), and hot Wolf-Rayet star that creates the stellar winds which form the Bubble.The 1442mm focal length with a Ha/OIII filter on a OSC camera shows a nice bit of detail inside the bubble, despite only having about 3 hours of integration time at f/7 due to the target getting low in the sky. The weather just hasn't allowed for follow-up sessions to acquire more imaging time.

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B

Title: NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length with Ha/OIII and SII/Hb filters

Description: The Bubble Nebula is a beautiful HII emission nebula in the Constellation Cas and is about 7,000 – 8,000 light years (ly) away from Earth, and about 7,000 ly wide.

At the center of the Bubble is SAO 20575, a very large, bright (magnitude -5.5), and hot Wolf-Rayet star that creates the stellar winds which form the Bubble.

The 1442mm focal length with both Ha/OIII and SII/Hb dual narrowband filters on an OSC camera shows a nice bit of detail inside the bubble, despite only having about 5 hours of total integration time at f/7 due to the target getting low in the sky. The weather just hasn't allowed for follow-up sessions to acquire more imaging time.

Capture Date: 11/20/23
Average Moon illumination ~56%

Celestron EdgeHD 800 w/0.7x reducer (fL = 1422mm)
ASI2600MC Pro (OSC camera)
Antlia ALP-T 2” mounted 5nm Dual Ha/OIII Narrowband Filters: Ha/OIII; SII/Hb
ZWO AM5 mount with guiding via Celestron OAG and ASI174MM mini

Dual Narrowband Ha/OIII Filter Light Frames: 36 x 300s [Total Exposure 3:00 ]
Dual Narrowband SII/Hb Filter Light Frames: 24 x 300s [Total Exposure 2:00 ]

Total Integration Time: 5:00

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	8857399
PixInsight job	7XXZGFCJ2VAI0GZ8STX3MARWWMHAJL9E
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h20m42s.623
RA (top/left)	23h23m44s.566
RA (top/right)	23h17m36s.152
RA (bottom/right)	23h17m43s.890
RA (bottom/left)	23h23m46s.945

Dec (center)	+61°11′23″.28
Dec (top/left)	+61°25′42″.68
Dec (top/right)	+61°24′42″.41
Dec (bottom/right)	+60°56′52″.64
Dec (bottom/left)	+60°57′50″.48

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NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length

Revision title: NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length with Ha/OIII and SII/Hb filters

NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length

Revision title: NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length with Ha/OIII and SII/Hb filters

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NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length

Revision title: NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length with Ha/OIII and SII/Hb filters

NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length

Revision title: NGC 7635 (Sh2-162, C11) -- Bubble Nebula revisited at longer focal length with Ha/OIII and SII/Hb filters

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