Heart and Soul Nebula Mosaic


Mosaics are cool, but they are tough!
This is a 4-panel mosaic. I had started with the Heart Nebula and decided to try to do a mosaic. I used Sequence Generator Pro’s Framing and Mosaic Wizard tool to plan the framing based on the initial Heart nebula data. I was pleasantly surprised how well the tool works but found out the hard way how difficult mosaics are to process. This was only two channels, known as bi-color. This image is made up of Hydrogen alpha and Oxygen III data. The blend is Red – Ha, Green – mix Ha+O3, Blue – O3. I wish I had gotten SII so that I could do the Hubble Palette but I knew how important getting enough O3 was and I was limited by available clear nights.

It is difficult to get all of the stars to line up among all the frames and all the panels for both the Ha and O3. I am fairly happy with how it turned out, though I wish I had more data.

Ha: 260×90″ (gain: 200.00) -20C bin 1×1
O3: 360×90″ (gain: 200.00) -20C bin 1×1

Integration: 15.5 hours

Darks: ~40

Flats: ~25

Bias: ~300

Avg. Moon age: 19.05 days

Avg. Moon phase: 31.20%

Bortle Dark-Sky Scale: 9.00

RA center: 40.602 degrees

DEC center: 61.214 degrees

Pixel scale: 2.027 arcsec/pixel

Orientation: -140.278 degrees

Field radius: 2.765 degrees


The Heart Nebula



The Heart Nebula, located near Cassiopeia. I love this target. For one, it looks a lot like the thing it’s named after. Second, it’s got a lot of interesting structure with all the various clouds. Just off the Heart Nebula is the Fish Head Nebula.

This is, of course, a false color image done in my favorite color scheme known as the Hubble Palette which as I have posted about before, is Red – SII, Green – Ha, Blue – OIII.

If you are interested in buying prints click Here!

Ha: 118×90″ (gain: 200.00) -20C bin 1×1
OIII: 23×90″ (gain: 200.00) -20C bin 1×1
SII: : 88×90″ (gain: 200.00) -20C bin 1×1

Integration: 5.7 hours

Bortle Dark-Sky Scale: 9.00

RA center: 37.972 degrees

DEC center: 61.299 degrees

Pixel scale: 1.881 arcsec/pixel

Orientation: -140.323 degrees

Field radius: 1.564 degrees