B33 - every cloud has a silver lining (Tom Gray)

B33 - every cloud has a silver lining

Revision title: processed in Siril, Starnet and Astrosharp

I hauled my SCT out to image this dark, dusty icon, against a bright backdrop of ionised hydrogen emissions, under the full moon.

I’d forgotten how much work is involved in getting this old scope ready. Despite a bright, sometimes hazy night, I was pleased to get an RMS 1.25” with my homemade ST4 guider.

2.5 hours data (5min subs) is sufficient to draw out some detail at f3.3 using a 7nm Baader Ha filter, despite the bright night.

Barnard 33 is a dark nebula bubbling up in front of curtains of hydrogen (IC 434) ionised by the intense UV irradiation coming from Alnitak in Orion’s Belt.

We’ve enjoyed some lovely winter sunsets in the last few days (revisions); The fringe of the horse head, has a soft glow, spectacular in deep large aperture images, reminiscent of sunlit clouds.

[Postscript]
Revision F is the original orientated image
Revision G combined data using Startools
Revision H combined data using Nebulosity

F

Title: Re-orientated

Uploaded: ...

G

Title: Combined data - processed in Startools

Description: Combined with data (17x600s) from Nov 2021 to give a total integration of 5h 25m

Uploaded: ...

H

Title: Combined data - processed in Nebulosity v4

Description: I'm always amazed what simple levels and curves can achieve. Nebulosity has basic processing tools, which I always feel provide a more natural look.It lacks the intelligent tools such as deconvolution and HDR, and post-processing cosmetic tools. basic star tightening, a little unsharp masking, a 3x3 pixel blur and noise reduction have been applied. It doesn't de-warp the stars or remove the strange anti-blooming artifact that I get on bright stars with this 2005 era CCD mono camera.

Uploaded: ...

I

Title: A stereo 3D version

Description: Developed in Startools. If you like a challenge - relax your eyes and move the image close to your eyes until you see 3 images, them move it slowly out, concentrate on the middle image, allowing your eyes to cross 👀, until it pops into focus - you'll get a nice 3D effect. PS do T stare too long or you’ll get a headache 🤕.

Uploaded: ...

J

Title: processed in Siril, Starnet and Astrosharp

Description: Starless version (Starnet) sharpened using Astrosharp and then recomposed in Siril

Uploaded: ...

UK Astro-Imaging
Only Monochromatic (Black and White!!!!! NO color, please!)
Schmidt-Cassegrain Telescope (SCT) Imagers
Altair Astro 183 M/C Hypercams

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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Status	Advanced success
Started	...
Astrometry.net job	8051378
PixInsight job	U5EG6K4FW9EGG3ED8L2MT08QI9TY6Q86
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h40m46s.94
RA (top/left)	05h39m31s.94
RA (top/right)	05h39m39s.85
RA (bottom/right)	05h42m02s.10
RA (bottom/left)	05h41m54s.00

Dec (center)	-02°30′03″.7
Dec (top/left)	-02°39′32″.6
Dec (top/right)	-02°17′23″.4
Dec (bottom/right)	-02°20′35″.8
Dec (bottom/left)	-02°42′45″.7

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