Rosette Nebula

The Rosette Nebula taken with William Optics Zenithstar 73 and Nikon D5500 DSLR

As every astrophotographer knows, the crystal clear nights you’ve been patiently waiting months for will always coincide with a big, bright full moon. Thankfully, this is one of the major bonuses of using a narrowband filter like the Optolong L-eNhance. It allows you to image anyway. What would have been a night to stay indoors becomes an opportunity to image an emission nebulae.

With a near full moon glaring throughout the entire night, I took a sequence of 2 minute exposures of the Rosette Nebula in Monoceros. I collected a total of 50 shots, with a 1 hour break while the target moved passed a local tree. The image needed some gradient removal due to the moon, but overall I think it’s a pretty remarkable result!

Image details: Modified Nikon D5500 and William Optics ZenithStar 73 II APO with 73a field flattener at 430mm / f5.9. 100 minute exposure time (50 x 120 seconds) at iso 800. Using Optolong L-eNhance filter. Tracked with unguided AstroTrac TT320X-AG. Stacked in Deep Sky Stacker with 20 dark / 30 flat / 30 bias frames. Sequenced with N.I.N.A.. Edited with Photoshop and Starnet++

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