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Getting plate-solving status, please wait...

Lynds Dark Nebula 673 (LRGB)

Technical card

Dates:June 22, 2020June 23, 2020June 24, 2020June 25, 2020

Astronomik Deep-Sky B: 12x300" -20C bin 1x1
Astronomik Deep-Sky G: 12x300" -20C bin 1x1
Astronomik Deep-Sky R: 12x300" -20C bin 1x1
Astronomik L-2 UV-IR Block: 72x300" -20C bin 1x1

Integration: 9.0 hours

Darks: ~50

Flats: ~10

Bias: ~200

Avg. Moon age: 2.78 days

Avg. Moon phase: 9.73%

Bortle Dark-Sky Scale: 4.00 job: 3657782

RA center: 19h 21' 21"

DEC center: +11° 12' 18"

Pixel scale: 1.033 arcsec/pixel

Orientation: 89.906 degrees

Field radius: 0.750 degrees

Resolution: 4140x3198

Locations: Home, Bergisches Land, Germany

Data source: Backyard


I was able to use the shortest nights of the year to finally image an object in our summer Milky Way again. :-) At the same time it was a test run for my Newtonian, which I had revised before (mirror cleaning, installation of an aperture ring above the main mirror and replacement of the secondary mirror with a new one). Fortunately this all worked out quite well.

LDN 673 is a rarely photographed, but impressive dark nebula in the constellation Eagle. The object is a highly fractured and very dense dark cloud complex of about 7 light-years across, located in the center of the Aquila Rift, some 300 - 600 light-years from Earth in the northern constellation of Aquila.

Hope you like it :-)



Frank Breslawski



Description: new aperture mask for the primary

Sky plot

Sky plot


Lynds Dark Nebula 673 (LRGB), 


            Frank Breslawski