Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1805
Heart of the Heart - Melotte 15 - SHO, Ben
Heart of the Heart - Melotte 15 - SHO
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Heart of the Heart - Melotte 15 - SHO

Heart of the Heart - Melotte 15 - SHO, Ben
Heart of the Heart - Melotte 15 - SHO
Powered byPixInsight

Heart of the Heart - Melotte 15 - SHO

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Description

The beautiful Heart Nebula in SHO. Part of my original mosaic project where I was looking to frame the entire heart, turns out, mosaics are a little harder than I expected. By hard, I think I mean they require a lot of time! Went for heavy color and saturation in this version, but the raw SHO combinations also look beautiful. I felt like some of the magenta stars in this image added to the high saturation theme, meh, kinda fun. 

This one was pre-processed with bias frames, but I will not be doing that from here on out. Seems to align with what everyone else is saying, they don't help, and in my tests, actually seem to hurt my dynamic range. Dark flats certainly do help however.

Still feel like my processing is not doing my data justice...

Pre-Processing:
Standard alignment with Median Kappa-Sigma Stacking on best Ha frame with 2x Drizzle
Post-Processing:
Deconvolution on Ha (EZ decon)
Denoise on Ha x1 (Ez denoise)
Denoise on Oiii and Sii x3 (Ez denoise)
Stretch (EZ softstretch)
RGB combination with pixel math:
R = (S*0.8)+(H*0.2)
G = (H*0.9)+(O*0.1)
B = (O*0.65)+(H*0.4)
RGB Starnet++ star removal
RGB Color mask based curves transformation including convolution on range mask for smoothness
RGB star replacement
RGB convolution
Ha Starnet++ star removal
Ha masked unsharpen mask with high and low standard deviation
Ha Dark Structure enhancement script
Ha ACDNR
Ha star replacement
L combination


I don't think FWHM was very good on this shot. 10 minutes seems to be pushing the AVX mount for average seeing days in the city. However, my AVX mount in dark sky on a below average seeing nights can easily run 0.75 seconds all night long with multi-star guiding on the ASIAIR. The problem is that stabilization after dither can take 5 minutes sometimes, that is a lot of wasted time.

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Heart of the Heart - Melotte 15 - SHO, Ben