Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  IC 1805
Getting plate-solving status, please wait...
IC 1805 Heart Nebula #2 HaRGB, 


            Molly Wakeling
IC 1805 Heart Nebula #2 HaRGB
Powered byPixInsight

IC 1805 Heart Nebula #2 HaRGB

Technical card

Imaging telescopes or lenses: Takahashi FSQ-106N

Imaging cameras: ZWO ASI1600MM Pro  ·  ZWO ASI294MC Pro

Mounts: Software Bisque Paramount MyT  ·  Celestron Advanced VX

Guiding telescopes or lenses: Orion ST-80

Guiding cameras: QHY5

Software: Seqence Generator Pro  ·  PixInsight

Filters: Astronomik CLS 2"  ·  Astronomik H-Alpha 12nm T2

Dates:Oct. 9, 2019Oct. 11, 2019Oct. 19, 2019Oct. 20, 2019Oct. 21, 2019Oct. 23, 2019Oct. 24, 2019Oct. 31, 2019Nov. 1, 2019Nov. 3, 2019Nov. 4, 2019Nov. 15, 2019Nov. 17, 2019Nov. 20, 2019Nov. 22, 2019Nov. 23, 2019Nov. 24, 2019Nov. 25, 2019

Astronomik CLS-CCD 2": 68x300" (gain: 120.00) -20C bin 1x1
Astronomik H-Alpha 12nm T2: 99x300" (gain: 139.00) -15C bin 1x1
Astronomik H-Alpha 12nm T2: 17x600" (gain: 139.00) -15C bin 1x1

Integration: 16.8 hours

Darks: ~37

Flats: ~20

Bias: ~70

Avg. Moon age: 18.07 days

Avg. Moon phase: 43.71%

Bortle Dark-Sky Scale: 7.00

Basic astrometry details job: 3081565

RA center: 2h 32' 39"

DEC center: +61° 27' 43"

Pixel scale: 1.484 arcsec/pixel

Orientation: 275.958 degrees

Field radius: 1.115 degrees

Resolution: 4548x2932

Locations: East Bay Area, CA, Berkeley, CA, United States

Data source: Backyard


"Astronomy compels the soul to look upward, and leads us from this world to another." - Plato

I know it's been a while since I've posted any results from my backyard -- but the wait has been worth it! Dwelling nearly 17 hours on the Heart Nebula has gotten me a great image!! This is by far and away my longest integration-time image. Feel free to share!

There is so much to say about this image. First, a few scientific facts. The Heart Nebula is a cloud of gas (particularly hydrogen, but also many others) that sits in the constellation Cassiopeia. It's about 7,500 lightyears away. At the center lies a group of stars known as Melotte 15, which contains some stars that are 50 times the mass of our Sun, as well as many smaller stars. These stars emit radiation that causes the hydrogen gas to glow a characteristic red hue.

Second, some fascinating parts of this nebula to pay attention to. At the center, the stars of Melotte 15 not only light up the region, but sculpt the gas. The whole nebula looks very much like a heart. At the core is an incredible structure that looks like an intricately-detailed spiral tower. It's my favorite part of the image, and I'll probably process another version of this that focuses in on that region at some point. Above the spiral are interconnected columns of light-absorbing molecular dust, also intricately woven. All around the edges of the Heart there is incredible sculpted detail to soak in. I have been dying to image this target for a long time, and I'm so happy about this result!

Third, some details on the processing. This image is composed of two images, an H-alpha monochrome image, and a color image. I combined the red channel of the color image with the Ha channel to boost it, and then made the Ha channel the luminance of the color image. This reduced noise and allowed the fine detail captured in the Ha image to shine through.

Very very happy with this one!!

You can support my work on Patreon!



Molly Wakeling
License: None (All rights reserved)

Sky plot

Sky plot


IC 1805 Heart Nebula #2 HaRGB, 


            Molly Wakeling

In these public groups

Women Astrophotographers