Heart Nebula
RA 2h 33m · Dec +61° 36′
5′

A large emission nebula surrounding the open cluster Melotte 15, whose central stars provide the ionising radiation. The heart shape is enhanced in Hα narrowband. Usually imaged alongside IC 1848 (Soul Nebula) as a mosaic — the Heart and Soul pair.

Emission nebula

Heart Nebula

IC 1805 · Cassiopeia
These photons are ~7,500 years old
UV/IRUV/IR-cut. Blocks ultraviolet and infrared so refractor optics stay in focus across the visible band.ZWO Seestar S50ZWO Seestar S50Aperture 50mm · Focal length 250mm · f/5 · Apo triplet with ED element · Sony IMX462 colour CMOS sensor (1920 x 1080, 2.1MP)…View equipment →LPBroadband light-pollution filter. Suppresses the sodium and mercury glow of streetlights while passing the main nebula emission lines and natural star colours.ZWO Seestar S50ZWO Seestar S50Aperture 50mm · Focal length 250mm · f/5 · Apo triplet with ED element · Sony IMX462 colour CMOS sensor (1920 x 1080, 2.1MP)…View equipment →MONOImaging filter used for this acquisition.ZWO Seestar S50ZWO Seestar S50Aperture 50mm · Focal length 250mm · f/5 · Apo triplet with ED element · Sony IMX462 colour CMOS sensor (1920 x 1080, 2.1MP)…View equipment →
⧉ 16 versions of this capture — pick one to see its image and log
↻ Revisited — built over 2 nights, the next night
  1. 1 16/09/2025 1m (1 × 30s) ZWO Seestar S50, ZWO Seestar S50 Camera
  2. 2 17/09/2025 41m (82 x 30s) + 9m (56 x 10s) + 50m (82 x 30s + 56 x 10s) ZWO Seestar S50, ZWO Seestar S50 Camera
16/09/2025 17/09/2025 The next night
Date
16/09/2025
Location
36.3859° N, 28.0414° E
Integration
1m (1 × 30s)
Software
ZWO Seestar app
Notes
·
Total effort
7h 23m over 3 nights
Moon
🌘Waning crescent, 35% lit
Plate solve
Centre RA
2h 32m 39.1s
Centre Dec
+61° 35′ 39″
Field
42.8′ × 76.0′
Pixel scale
2.38″/px
Orientation
83.2° E of N
Hemisphere
Northern
Also in this frame
IC1805

Catalogued objects inside the plate-solved field, nearest the centre first. Highlighted names have their own photo here.

TelescopeZWO Seestar S50
CameraZWO Seestar S50 Camera
RigFamily Holiday Rig

Where to find it

Finder chart
+61°10′+61°20′+61°30′+61°40′+61°50′+62°2h27m2h28m2h29m2h29m2h30m2h31m2h31m2h32m2h33m2h33m2h34m2h35m2h35m2h36m2h37m2h37m2h38mIC 1805NE42.8′ x 76.0′5′

Star field and catalogued objects inside the plate-solved field, oriented to the solve. Fully offline, from the bundled star and deep-sky catalogues.

Interactive sky chart centred on 2 32 39.1 +61 35 39. Drag to pan, scroll to zoom, click a star or object to identify it. Zoom in to the plate-solved field for the DSS survey photo; zoom out for constellation figures and neighbouring catalogue objects. Fully self-hosted: the star and deep-sky catalogues and the survey image are all served from this site, so nothing external loads. Imagery: DSS2 colour (STScI / POSS-II). Constellation figures © Dominic Ford (GPLv3).

Captured from · Ρόδος (Rhodes)
36.3859° N, 28.0414° E · view on OpenStreetMap ↗ · Place data © GeoNames (CC BY)

Frequently asked questions

What kind of object is IC 1805?
IC 1805 is an emission nebula.
Which constellation is IC 1805 in?
IC 1805 lies in the constellation Cassiopeia.
How far away is IC 1805?
The light in this image left IC 1805 roughly ~7,500 years ago, so that is how far back in time you are seeing it.
What are the coordinates of IC 1805?
IC 1805 sits at right ascension 02h 32m 39s and declination +61° 35′ 39″ (J2000).
When is the best time to photograph IC 1805?
IC 1805 is circumpolar from around 36°N - it never sets, and rides highest (about 65° altitude) on evenings around October.
What equipment was used to photograph IC 1805?
This image of IC 1805 was captured with ZWO Seestar S50 and ZWO Seestar S50 Camera.
How much exposure time went into this image?
This image of IC 1805 represents 1m (1 × 30s) + 41m (82 x 30s) + 9m (56 x 10s) + 50m (82 x 30s + 56 x 10s) + 14m (3 x 300s) of total integration time.

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