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Contains:  M 106, NGC 4258, NGC 4248
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Messier 106

Technical card

Imaging telescope or lens:Meade LX600 12"

Guiding camera:SBIG 8300

Software:Photoshop CS6PixInsight 1.8

Resolution: 3352x2089

Dates:May 2, 2014Feb. 4, 2018Feb. 8, 2018

Ha: 25x600" bin 2x2
Luminance: 53x300" bin 1x1
RGB (Single Shot Color): 12x720" bin 1x1

Integration: 11.0 hours

Avg. Moon age: 15.05 days

Avg. Moon phase: 44.51% job: 1986485

RA center: 184.706 degrees

DEC center: 47.308 degrees

Pixel scale: 0.492 arcsec/pixel

Orientation: 322.154 degrees

Field radius: 0.270 degrees

Locations: Thin Air Observatory, Santa Fe, New Mexico, United States

Data source: Backyard


Discovered in 1718, Messier 106 (NGC 4258) is a large spiral galaxy found 24 million light years distant toward the constellation Canes Venatici. Visual magnitude is 8.4 and apparent size is 18’.

This active galaxy holds a super-massive black hole at its center. The black hole powers energetic emissions at essentially all observed wavelengths. Of particular interest is the pair of luminous jets seen flowing from the center at 8:00 and 2:00 in this image. The former appears particularly focused. These jets which are reveled here in light of excited hydrogen represent hot gas ejected from the black hole’s accretion disk which then collides with the cooler gas in the galaxy’s disk and halo. This process creates the appearance of four spiral arms, but only two contain star clouds. The other two being the gas jets. A smaller companion galaxy, NGC 4248 is seen at right.

This image was captured under high desert skies near Santa Fe, New Mexico, USA.



Greg Allegretti
License: Attribution-NonCommercial-NoDerivs Creative Commons

Sky plot

Sky plot


Messier 106, 


            Greg Allegretti