Melotte 15 (heart of the "heart nebula") in Ha/OIII (Daniele Malleo)

Melotte 15 (heart of the "heart nebula") in Ha/OIII

Yet another placeholder as I work my way through a tricolor acquisition - which is taking longer than expected since the fog is unseasonably back in the East Bay of San Francisco.

As in the case of my Ha-only acquisition I have kept sharpening to a minimum, as I like the fuzzy wispy version better (they are gas clouds after all, how sharp can they really be ?!)

Exposures so far:

- 25 x 30m subs in Ha (5nm)

- 20 x 30m subs in OIII (3nm)

total exposure time: 22.5 hours.

In this rendition, I have mapped Ha to Red and OIII to Blue. I have then created a synthetic green channel and extensively tweaked the hue and a/b ratios in L-ab mode to get a yellow/red over blue color scheme...

(RA, Dec) center: (38.3870721954, 61.4195502548) degrees

Orientation: 0.186533857983 deg E of N

Pixel scale: 0.52 arcsec/pixel

Main Camera: QSI 583 WSG

Guide Camera: SXV Lodestar (on OAG)

Mount: Astro-Physics Mach 1

Scope: Celestron Edge HD 8" (FL: 2032mm)

Adaptive Optics Unit: SXV-AO-LF

Image Aquisition software MaximDL

Registed, Calibrated and Stacked in MaximDL

Post Processed with PixInsight 1.8 and Photoshop CS6

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	Distinct awarded users	Total awarded images
Image of the day
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Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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Backyard
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Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Astrometry.net job	n/a
PixInsight job	n/a
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