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The Fishhead Nebula (IC 1795) photographed from Lakeway, Texas with a ZWO Seestar S50: a rounded glow of red hydrogen at the center shaped like a fish’s head and crossed by a dark dust lane, with the bright knot NGC 896 just above it and fainter red wisps around it.

IC 1795 — The Fishhead Nebula

The youngest corner of the Heart & Soul, still making stars

  • TelescopeZWO Seestar S50
  • Integration288 minutes
  • LocationLakeway, TX
  • SkyBortle 6
  • CapturedOct 21, 2026
  • ProcessingShot by the telescope robot as one panel of the Heart & Soul widefield: 1,730 ten-second exposures, 4.8 hours through the dual-band filter, with the dew heater on all night. The target never climbed above 58 degrees, which kept this not-quite-level Seestar out of the zone where it trails its stars, and only about 9% of frames were rejected. Plate-solved against the Gaia star catalog, the frame landed within an arcminute of where it was aimed.

What you're looking at

IC 1795 is a glowing cloud of hydrogen about 6,400 light-years away in Cassiopeia, on the western edge of the Heart Nebula. Radio astronomers call the whole region W3, and its distance is one of the best measured in this part of the galaxy, from the parallax of water and methanol masers deep inside it.

The fish shape is gas lit by hot young stars, cut across by a dark lane of dust in front of it. The bright knot just above the head, NGC 896, is the brightest part of the same cloud; William Herschel catalogued it in 1787.

W3 is the youngest part of the Heart & Soul complex. Its densest core, W3 Main, holds massive stars so young they are still wrapped in their birth cloud: nearly invisible to my camera, blazing in the infrared view below. Astronomers think the Heart’s expanding bubble squeezed this cloud into collapse, one generation of stars setting off the next.

The lesson

I almost left this one out. The Fishhead sits off the edge of the classic Heart & Soul framing, and it is small enough to treat as decoration.

But it is where the future of that whole complex is happening: the newest stars in the region, still forming, set off by the pressure of the generation before them.

Organizations work the same way. The established teams get the attention, while the next thing takes shape at the edge, under pressure, mostly out of view. Look at the edges.

The same fish, in infrared — NASA’s WISE space telescope

The Fishhead field in infrared from NASA WISE data, placed on the same framing as the backyard photo: a vast cloud of warm orange and white dust filling the middle of the frame, with a blazing white core just above the fish’s head.
The identical patch of sky, in heat instead of visible light. Blue is starlight; orange and white are warm dust. The blazing white core just above the fish’s head is W3 Main, a cluster of massive newborn stars still buried in the cloud they formed from. It barely registers in my photo; in infrared it is the brightest thing in the frame. Warm dust spreads across the whole fish and well beyond it: the cloud that is still turning into stars.

Image data: NASA/JPL-Caltech, WISE (ALLWISE atlas tiles), public archive via IRSA. Six-tile mosaic, reprocessed by Kyle Eberly / Sitreps; the backyard frame was plate-solved against the ESA Gaia catalog to place it.

My telescope
ZWO Seestar S50 — 50 mm lens, visible light, 4.8 hours
This telescope
WISE — a 40 cm space telescope above the atmosphere
The light
3.4, 4.6 and 12 µm infrared — heat the atmosphere never lets through
The data
The same six ALLWISE atlas tiles behind the Heart’s infrared view, plate-solved against the Gaia star catalog so the infrared lands on my exact framing

A young star-forming region looks modest in visible light, because its newest stars are still hidden in dust. Heat gets out where light does not, so the infrared view is where W3 shows what it really is.

One photo. One lesson.

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Object data

Catalog
IC 1795 · NGC 896 · part of W3
Constellation
Cassiopeia
Type
Emission nebula and star-forming region
Distance
~6,400 light-years
Part of
The Heart & Soul complex, on the Heart’s western edge
Integration
1,730 × 10 s = 4.8 hours

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The Soul Nebula (IC 1848) photographed from Lakeway, Texas with a ZWO Seestar S50 Pro — a vast, smoky red emission nebula filling the frame, its blown-out bubble walls cut by dark bays, with young star clusters scattered through the interior.
IC 1848
The Rosette Nebula (C49) from Lakeway, Texas with a ZWO Seestar S50 Pro — a full ring of red hydrogen filling the middle of the frame around a dark central cavity holding the star cluster NGC 2244, with dark dust globules and lanes threaded through the ring.
C49