Orion Skies

IC 1805, the Heart Nebula

Nebula. Improver target.

For your DWARF 3. Change scope

Duo-Bandfilter
82°highest
One frameDWARF 3 tele
Nov, Decbest at 10pm

In Cassiopeia, high all autumn and winter. Bigger than the frame: frame on part of it, or a mosaic.

From a real night: Mosaic 2 views, Duo-Band, gain 90. In alt az the field turned 75 degrees over 4 hours, so set EQ mode first.

Taken with a Dwarf 3

IC 1805, the Heart Nebula, taken with a Dwarf 3
IC 1805, the Heart Nebula
Duo-Bandfilter
15 sexposure
1,106frames
4 h 36 minin all
2 viewsmosaic
Taken with a Dwarf 3 by TPN Explorer, a garden in Leicester, 23 September and 3 October 2026.

Will it fit?

Sky survey picture of IC 1805, the Heart Nebula with the DWARF 3 frame drawn on it
The dashed box is the DWARF 3 tele frame, 2.93 by 1.65 degrees. It fits in one frame. Sky picture: DSS2 colour survey, via CDS hips2fits (Strasbourg).

Tonight from your location

Set your location in the menu bar to see how high it gets tonight.

Settings by level

Use EQ mode for this oneNebulae are faint and need hours of shots. Without EQ mode the picture slowly turns through the night and the edges are lost when it stacks. Set up EQ mode on the tripod before you search for IC 1805, the Heart Nebula. How to set up EQ mode.

Beginner

Alt-Azmode
Autosettings
Duo-Bandfilter
Set to fitshots

Improver

EQmode
15 sexposure
70gain
Duo-Bandfilter
200+frames

Expert

EQmode
60 sexposure
70gain
Duo-Bandfilter
100+frames

Will my run fit tonight?

Beginner: Auto picks well, but check the filter by eye and set the number of shots to finish before cloud or the Moon. See Improver and Expert for why.

Join to tick it off and share your picture of it.

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