Smart telescope premiere: The Cygnus Nebular Complex captured as a 585-megapixel mosaic with Vespera

Under the skies of his home in Oregon, Vaonis ambassador Nathanael Martin accomplished something never before seen in the world of smart telescopes.

Equipped with three Vespera II units, he captured an ultra-high-definition image of the Cygnus Nebular Complex,  a breathtaking 585-megapixel mosaic covering 13 × 18 degrees of sky, assembled from 48 Vespera II mosaic panels and totaling more than 222 hours of acquisition.

The whole 13° x 18° Cygnus Nebular Complex captured with Vespera 2 (link to full-resolution image below).

This monumental 13° x 18° image, a first for any smart telescope, reveals the entire Cygnus region in unprecedented depth, from the iconic North America and Pelican Nebulae to the Crescent, Butterfly, and Tulip Nebulae, all interwoven by the glowing filaments of countless H II regions that trace the Milky Way’s spiral arm.

It’s a cosmic panorama made possible by an instrument that fits in a backpack

“I firmly consider Vespera II to be the best overall smartscope on the market currently, all factors considered.” Nathanael says. “The software is amazing. I never stack my own subs from Vespera. The stacked TIFFs are extremely good quality, and Mosaic mode is flawless in image quality. Total game changer.”

The Challenge: Capturing the Heart of Cygnus

The Cygnus constellation is one of the most photogenic in the sky. Yet, its sheer scale poses a challenge: even wide-field instruments struggle to encompass its full grandeur in a single frame.

To reveal the entire Cygnus Nebular Complex, from the North America and Pelican Nebulae (NGC 7000 & IC 5070) to the distant folds of SH2-101, the Tulip Nebula, and the Crescent Nebula, Nathanael planned an intricate 48-panel mosaic using Vespera II’s mosaic mode. Each panel required around five hours of exposure, precisely overlapped to achieve seamless coverage of an immense 13° × 18° field of view, roughly thirty-four full moons wide.

Usually considered a wide-field target, the North America and Pelican Nebulae appear here as just a small portion of the full celestial tapestry.

Nathanael meticulously prepared his acquisition plan over several months.

“I wanted to keep gradients as consistent as possible,” he explains, “so I decided to image only during 50% moon or less.”

During an extraordinary fourteen consecutive clear nights in September, Nathanael operated three Vespera II units simultaneously to accelerate coverage. 

Once the data was collected, another challenge awaited: assembling…