Messier 81 (Bode Galaxy), Messier 82 (Cigar Galaxy), UMa (Vladimir Machek)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · M 81 · M 82 · NGC 2976 · NGC 3031 · NGC 3034 · NGC 3077

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Messier 81 (Bode Galaxy), Messier 82 (Cigar Galaxy), UMa

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Messier 81 (Bode Galaxy), Messier 82 (Cigar Galaxy), UMa

OBJECT: M81, Bode Galaxy, Constellation Ursa Mayor (UMa), apparent magnitude 7, apparent dimension 14’ x 30’. M82, Cigar Galaxy, Constellation Ursa Mayor (UMa), apparent magnitude 8,4 apparent dimension 4’ x 11’.

CALIBRATION: RA 9h 59m, DEC +69°11’, FOV 2,8°x 1,9°, Field radius 1,73°, Pixel scale 2,67 arcsec/px. Image size 3840 x 2560 px, Cropped 3,37x.

GEAR: Nikon Z7 Kolari Full Spectrum + Nikkor Z 400/4,5, Kolari H+ Clip in filter, UV lens filter, Dew heater strip, Sensor pixel scale 2,25 arcsec/px (Z400), tracking mount iOptron HEM27EC - ipolar alignment, No auto guiding.

ACQUISITION: April, 27, 2024, Struz, CZ, Subexposure 120s, f 4,5, ISO 1600, Interval 10 s, RAW-L, Lights 40x, Bias 22x, Flats 22x, Total exposure time 80 min. Night, no Moon, strog wind, 10° C, Backyard - Light pollution - Bortle 5.

STACKING AND POST PROCESSING: Stacking in Pixinsight (WBPP), post processing in Pixinsight ( DynamicCrop, CosmeticCorr, GradientCorr, ColorCalibration, BlurXTerm, NoiceXTerm, streching via HistogramTrans, ColorSat) and Adobe Photoshop CC 2024 (final color and brightness tuning)

DSLR and mirrorless astrophotography
DSLR/Mirrorless Imagers from the World
Nikon Imagers
Camera Lens Astrophotography
Astrophotography from home

Please note: The following tables are updated every 24 hours.

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
Artificial satellite

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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic success
Started	...
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Messier 81 (Bode Galaxy), Messier 82 (Cigar Galaxy), UMa

Messier 81 (Bode Galaxy), Messier 82 (Cigar Galaxy), UMa

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Image Index:

Contribution Index (beta):

Messier 81 (Bode Galaxy), Messier 82 (Cigar Galaxy), UMa

Messier 81 (Bode Galaxy), Messier 82 (Cigar Galaxy), UMa

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Acquisition details

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