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MrJackDog OP t1_j8apse9 wrote

I photographed this in September 2022 under the dark skies of Highland County, Virginia, using a Sony A7III camera and a 85mm Sony GM lens. The camera I had astro-modified by removing a stock filter so it would be sensitive to red wavelengths present in the nebulae.

The image is a combination of three separate images: two exposures of the land at different focal lengths and one image of the sky, itself a stack of 60 separate 60 second images. For the sky images, the camera and lens sat on a star tracker, a portable mount that counters the earth’s rotation allowing for long exposures without star trails.

I shot an hour worth of 60 exposures with this set-up. After collecting all these exposures, I used a free program called Starry Sky Stacker to “stack” the images — compiling the data in the exposures together to refine the target and reduce noise.

After I shot the sky, I then shot the land using the same camera and lens from the same vantage point. I shot two 4 minute exposures for a focal blend of the foreground and background. Once I had all these images, I used masks in photoshop to blend all the images together for the final composite.

Astrophotography is a hobby with many variations and many purists. Some frown on these composite images - I shoot and enjoy many different types of astrophotography and no matter what the technique, my goal is the same: to share the same sense of awe that I feel when out under a clear dark sky taking in the cosmos.

For more of my work, check out my Instagram: @brennangilmorephoto

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curioushom t1_j8bulk8 wrote

Thanks for the excellent explanation! Do you mean that you used two focal lengths for the foreground or two focal planes to get sharpness front to back?
Amazing capture!

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MrJackDog OP t1_j8bxpg6 wrote

The latter, same lens different focal points

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curioushom t1_j8cl0iy wrote

Awesome, I love how it's in focus but still has a dreamy movement quality.

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Baremegigjen t1_j8avr1q wrote

Spectacular combination of Earth and Sky!

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zandy322 t1_j8b77lh wrote

Omg beautiful

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