Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1805
Heart nebula needs much more light !, 


Heart nebula needs much more light !
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Heart nebula needs much more light !


Acquisition details

Feb. 16, 2015
11×40(7′ 20″)
7′ 20″
Avg. Moon age:
26.65 days
Avg. Moon phase:

Basic astrometry details

Astrometry.net job: 546693

RA center: 02h34m02s.9

DEC center: +61°1622

Orientation: -36.210 degrees

Field radius: 0.592 degrees

Resolution: 620x294

File size: 144.5 KB

Locations: La Gueule du Loup (Malonne), Namur, Namur, Belgium


VERSION B : sorry folks, this is not a pretty picture. But for me, a step ahead in understanding astrophoto processing. I integrated a longer 160 sec O-III defective frame (hence the heavy crop and colored lines at the bottom), than reduced to 3 frames in O-III (60sec. 62 sec and 160 sec.) and 5 broadband (instead of 2). Same data : much more nebulosity to be seen.

(Initial statement This is supposed to be the Heart nebula. There is a very faint hint of nebulosity on the more contrasted parts... When you zoom on the raw, along with a Stellarium. Still, it's only very faint outlines. Yet the depth of field reach down to mag. 16.40... Obviously far from enough. I should check my colleague's fields to get an idea how deep one needs to seek for light :-) So!

That was my first improvised attempt, anyway. Astrophotography allows for little improvisation.

With 8 of 10 of my "lum" and another 4 O-III frames to the bin (need to bring this camera to the shop really)...

First small stone on the way to better understanding.

2x Lum (broad band)

9x O-III

Ha and S II are on the way...



  • Heart nebula needs much more light !, 


  • Final
    Heart nebula needs much more light !, 



Sky plot

Sky plot


Heart nebula needs much more light !,