IC 1805 - The Heart Nebula

The Heart Nebula is an emission nebula located in the constellation of Cassiopeia, around 7,500 light years away from Earth and have a radius around 165 light years.

The term ’emission’ means that the cosmic gas that forms the nebula is actually glowing itself.

Over the years IC 1805 has been designated as the ‘Heart Nebula’ due to its resemblance to the shape of a human heart.

The glow of the nebula comes from the radiation of a small open cluster of stars known as Melotte 15.

The cluster contains very young, blue, hot supergiant stars that are about 1.5 million years old and is located near the nebula’s centre. Some of this stars are about 50 times as massive as our own Sun.

The stars of Melotte 15 are blasting the surrounding hydrogen and causing it to emit light, powering the Heart Nebula’s beautiful glow.

 

The third attempt was the good one. Stars were weird/pinched on the first sessions (Redcat Focuser Issue).

So for the last clear night of november I decided to go back on this nebula to break the spell. :p

I've shoot from 7.00 PM to 6.00 AM, resulting in around 9.5 hours of good subs (10 min each)

Another Time, Exposure Time did the job as the Drizzle did.

 

Clear Skies !

 

Lights : 58 x 600 sec (9h40)

Darks : 60 ~ Offset: 100 ~ Flats: 100

 

Setup :

Camera : ZWO ASI 533 MC

Main Scope : William Optics Redcat 51

Guide Camera : ZWO ASI 120MM Mini

Guide Scope : ZWO Mini Guide Scope

Mount : Skywatcher EQ6-R

Filter : Optolong L-Extreme

Others : ZWO ASIAIR PRO

Done