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Nebula · Cepheus

Nébuleuse de l'Iris

A cloud of dust about 1,160 light-years away, in Cepheus.

Nébuleuse de l'Iris, NGC 7023, longest exposure 11h 34
NGC 7023 · Nébuleuse de l'Iris 11h 34 · DwarfLab DWARF 3

It does not produce its own light: it returns the light of the star HD 200775, sitting at its centre, and that is where its blue comes from. It is a reflection nebula, lit dust: it does not react to the dual-band filter, and it needs a broadband filter. The first minutes give the blue heart. The dark dust around it is far fainter: it takes the hours that follow.

Source: Wikipédia en français, NGC 7023. A figure wrong? Report it.

11h 34m 4 shots

0 towards 22h 12m · cumulative integration on this object

Temps d'intégration : the total exposure time, the sum of every exposure stacked on an object.

Designation
NGC 7023
Family
Nebula
Constellation
Cepheus
Shots taken
4
Cumulative integration
11h 34
Filter
Astro
Instrument
DwarfLab DWARF 3

Every shot

The same object, several nights

Sorted from the deepest to the shortest. The signal adds up from one session to the next: that is what sets a smart telescope apart from a camera.

Nébuleuse de l'Iris, prise du 22 May 2026, 11h 34 de pose, avant correction

11h 34 22 May 2026

DwarfLab DWARF 3 · Astro · avant correction

Nébuleuse de l'Iris, prise du 22 May 2026, 11h 34 de pose, après correction par l'application

11h 34 22 May 2026

DwarfLab DWARF 3 · Astro · après correction par l'application

Nébuleuse de l'Iris, prise du 21 May 2026, 6h 25 de pose, avant correction

6h 25 21 May 2026

DwarfLab DWARF 3 · Astro · avant correction

Nébuleuse de l'Iris, prise du 21 May 2026, 6h 25 de pose, après correction par l'application

6h 25 21 May 2026

DwarfLab DWARF 3 · Astro · après correction par l'application

Nébuleuse de l'Iris, prise du 27 April 2026, 4h 25 de pose

4h 25 27 April 2026

DwarfLab DWARF 3 · VIS

Nébuleuse de l'Iris, prise du 25 April 2026, 2h 03 de pose

2h 03 25 April 2026

DwarfLab DWARF 3 · Astro

In the same family

Other nebulae in the catalogue

NGC 7000 · IC 5070, Amérique du Nord et Pélican

NGC 7000 · IC 5070 · Cygnus

Amérique du Nord et Pélican

22h 12m 3 shots

0 towards 22h 12m · cumulative integration on this object

M8 · M20, La Lagune et la Trifide

M8 · M20 · Sagittarius

La Lagune et la Trifide

11h 23m 1 shot

0 towards 22h 12m · cumulative integration on this object

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