LoTr5 and NGC4725 | Emil Andronic

Galaxies, Planetary Nebulae

Astropod May 31st 2023

Two captivating cosmic objects in the constellation Coma Berenices have been skillfully captured in this stunning submission. The image is a captivating 2-panel mosaic featuring LoTr5, a large, faint planetary nebula, and NGC4725, an intermediate barred spiral galaxy with a notable ring structure.

LoTr5 and NGC4725 | Credits: Emil Andronic
LoTr5 and NGC4725 | Credits: Emil Andronic

LoTr5, at a distance of approximately 1,650 light-years, provides an example of the final stages of a star’s life, its gaseous layers expelled into space to form a nebula. On the other hand, NGC4725, located a staggering 41 million light-years away, offers a glimpse into a unique galactic formation. This pairing of celestial objects in a single image wonderfully illustrates the diversity of structures and phenomena in our universe.

Gear and equipment used

Emil Andronic utilized the following equipment to create this remarkable image:

Mount: StellarDrive GT6
Telescope: AstroTech 106LE with upgraded Moonlite focuser
Field Flattener: TSFlat 2″ field flattener
Cameras: ASI294MM Pro Cmos camera, cooled at -15°C and QHY294M Pro Cmos camera, cooled at -15°C
Filterwheels: 8×1.25″ ZWO USB filterwheel and QHYCCD QHYCCD CFW3M-US 36mm filterwheel
Filters: Chroma 1.25″ RGB and Chroma 1.25″ LoGlow filters, Antlia 36mm LRGB filters
Guide Camera: Qhyccd QHY5L-IIM guide camera
Guidescope: OpticStar AR90
Alignment Tool: Qhyccd Polemaster


The image was captured in two locations in Hertfordshire, England – Bushey (Bortle 7) and Hemel Hempstead (Bortle 5). These locations have varying light pollution levels, which presents a unique challenge for the astrophotographer.

Image acquisition details

The acquisition of the image took place from February 11, 2022, to May 24, 2023. With varying exposure lengths and multiple filters, Emil managed to compile a total integration time of 19 hours and 20 minutes. This extended period allowed him to capture the faint details of both the nebula and the galaxy.

Image processing techniques

Emil has not specified the image processing techniques used for this image. However, considering the complexity of capturing two distinct celestial objects and stitching them into a single 2-panel mosaic, it is safe to say that advanced image stacking and post-processing techniques were employed to bring out the details and colors in the image.

Significance of the image

The significance of Emil’s image lies in its demonstration of the vast diversity of the universe, captured in one frame. It shows a planetary nebula – a phenomenon that occurs during the death of a star, and a barred spiral galaxy – a colossal structure comprising billions of stars, possibly with a supermassive black hole at its center. The image is a stark reminder of the beauty and scale of the cosmos, full of diverse celestial objects.

Photographer credits

Emil Andronic, the talent behind this captivating image, has demonstrated an incredible ability to capture the beauty of the cosmos. You can explore more of Emil’s work on his website or follow his journey on Facebook and Instagram.

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