Wide field M109 (Andreas Zeinert)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: HD103829 · M 109 · NGC 3992

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Wide field M109

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Wide field M109

Messier 109 (also known as NGC 3992) is a barred spiral galaxy exhibiting a weak inner ring structure around the central bar approximately =nowrap67.2 ± 23 million light-years away in the northern constellation Ursa Major. There is a quite complicated story about its discovery as it seems that the first one to mention it was french astronomer Pierre Méchain.

Of course with a 100 f/5.8 refractor you cannot produce in 3h15 an APOD

. However the main structures become visible and I find the wide fields quite nice. Not so nice were all the satellite trails in the first pictures. I suppose that all of us face this experience. It is almost impossible to shoot at the beginning of the evening, some subs had more than 10 trails, often parallel, not easy to get rid of them during processing without scarifying signal, I lost 8 Luminance subs = 32 min

. Things will get worse in the upcoming years and I fear that wide field pictures in summer will become very difficult if not impossible when the sun is low under the horizon.
All the best, Andreas

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	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

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	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

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	7520618
PixInsight job	LH1LGL7LD54S9B3VIA5YE00D2VHCLP5Q
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h57m37s.40
RA (top/left)	12h00m09s.61
RA (top/right)	12h01m08s.95
RA (bottom/right)	11h55m00s.36
RA (bottom/left)	11h54m09s.65

Dec (center)	+53°20′51″.1
Dec (top/left)	+52°45′59″.5
Dec (top/right)	+53°48′12″.10
Dec (bottom/right)	+53°55′29″.5
Dec (bottom/left)	+52°53′06″.3

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Wide field M109

Wide field M109

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Wide field M109

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