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Contains:  NGC 3718, NGC 3729
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NGC 3718 Barred Galaxy, 


            Jerry Macon
NGC 3718 Barred Galaxy
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NGC 3718 Barred Galaxy

Technical card

Dates:Jan. 27, 2019Feb. 8, 2019

Astrodon Gen 2 L 36mm: 66x200" (gain: 99.00) -20C bin 1x1
Astrodon Gen 2 RGB 36mm: 241x200" (gain: 99.00) -15C bin 1x1

Integration: 17.1 hours

Avg. Moon age: 12.49 days

Avg. Moon phase: 32.85%

Bortle Dark-Sky Scale: 4.00

Temperature: -5.00

Basic astrometry details job: 2685698

RA center: 11h 33' 4"

DEC center: +53° 3' 32"

Pixel scale: 0.701 arcsec/pixel

Orientation: 358.095 degrees

Field radius: 0.293 degrees

Resolution: 2420x1796

Locations: Dark Star Observatory, Taos, New Mexico, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility


Images from the following two scopes (piggybacked) contributed to this image:
AG12+ASI1600MM at .70 asec/pix
TV127is+ASI183MM at .75 asec/pix.
They were all registered to the best R image taken on the AG12.
Using L from the TV NP127is refractor effectively eliminates the spikes from the AG12.

Imaged on nights of 1/27/2019, 1/28/2019, 2/8/2019.
This is one my favorite galaxy clusters. The bar in NGC3718 is just lovely.

A careful look at this colorful cosmic snapshot reveals a surprising number of galaxies both near and far toward the constellation Ursa Major. The most striking is NGC 3718, the warped spiral galaxy near picture center. NGC 3718's spiral arms look twisted and extended, mottled with young blue star clusters. Drawn out dust lanes obscure its yellowish central regions. A mere 150 thousand light-years to the left is another large spiral galaxy, NGC 3729. The two are likely interacting gravitationally, accounting for the peculiar appearance of NGC 3718. While this galaxy pair lies about 52 million light-years away, the remarkable Hickson Group 56 can also be seen clustered above NGC 3718, near the top of the frame. Hickson Group 56 consists of five interacting galaxies and lies over 400 million light-years away.



Jerry Macon
License: Attribution Creative Commons

Sky plot

Sky plot


NGC 3718 Barred Galaxy, 


            Jerry Macon