An experiment: the Horsehead nebula from a Bortle 7 site (Francesco Meschia)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 50 zet Ori · Alnitak · B33 · Flame Nebula · Horsehead nebula · IC 434 · IC 435 · NGC 2023 · NGC 2024 · Orion · Orion B · Sh2-277 · The star Alnitak (ζOri)

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An experiment: the Horsehead nebula from a Bortle 7 site

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An experiment: the Horsehead nebula from a Bortle 7 site

An interesting experiment in imaging from a heavily light-polluted site (Bortle 7) with an IDAS LPS-D1 filter. Only 90 minutes were sufficient to capture some decent detail. The worst problem is that from this site I get some circular light pattern that is not corrected by flats, which forces me to crop the long side to cut it off. I suspect some stray light is bouncing off the inside of the dew shield and manages to reach the image sensor.

Edit: two days later I added two more hours’ worth of light. So the total integration time is now three and a half hours.

Original
D
Final
E

D

Description: Added two hours of fresh data, plus more careful gradient management

Uploaded: ...

E

Description: After a bit of star reduction

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	3360900
PixInsight job	PF0IWGFZU6XU0HLTCJR3Q32Q67N2B2KS
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	05h41m07s.99
RA (top/left)	05h39m05s.23
RA (top/right)	05h38m48s.49
RA (bottom/right)	05h43m10s.93
RA (bottom/left)	05h43m27s.48

Dec (center)	-02°17′36″.5
Dec (top/left)	-01°32′21″.2
Dec (top/right)	-02°59′43″.2
Dec (bottom/right)	-03°02′50″.8
Dec (bottom/left)	-01°35′27″.6

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An experiment: the Horsehead nebula from a Bortle 7 site

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An experiment: the Horsehead nebula from a Bortle 7 site

An experiment: the Horsehead nebula from a Bortle 7 site

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