M33 HaLRGB (Rodd Dryfoos)

M33 HaLRGB

This is an HaLRGB version of M33--I added about 2.5 hours of luminance, which is not nearly enough. I plan on collecting more luminace tonight to complete the image, but thought I'd post this one as the initial result--I worked quite hard to make the most of of the lum that I captured. It will be a good opportunity to guage the effect of more data--at least to the luminance channel. I am hoping that tripling the lum data will smooth out fine scale roughness and impart more of a sense of depth. As the last image before I switch OTAs (going to finlly image with the FSQ 106 after it was recocollimated) I really want this one to end up decent.

I ran into trouble with cooling and dew. A spider webbed up the cooling fan preventing it from spinning. I could not understand why cooling was not working until I checked. I only thought to check because this has happened before! I don't know if this is what cuased dew to form--if it effected the way the heat was directed at the sensor plate, but dew formed somewhere other than the front of the objective--the reducer, the sensor window, or behind the front objective. Not sure. It took an hour or so to eliminate it--one of the reasons I only collected 81 subs (that and the clouds rolled in).

I added 160 120 sec lum subs for a total Lum of about 8 hours (241 subs). I also made a superluminance with the 241 lum subs and 107 of the lowest FWHM RGB subs (most of them green). I have not processed that version yet. I decided to do the tright lum first becuase the signal strength in the lum subs is very much higher than the RGB subs, and the incluion of the RGB subs in the super luminnce brought down the brightness of the Slum stack a bit--not a lot, but noticiable. It might be preferaable as the median was lower (backgound slightly darker). I'll try an HaSLRGB next. The image is still reduced in size a bit--but not quite as much.

R

Description: AB Final: Fixed stars-Thanks Gary

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T

Description: Work-a bit less saturation

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U

Description: New7b2: Resample

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V

Description: New7b3: Worked on stars--Not sure if I like this palette better. I think its more representative.

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X

Description: More natural look

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Y

Description: AB FF: Reduced red

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Z

Description: Work--I am struggling with the palette. I think this is more natural

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BA

Description: Ha-LS2: reduction of saturation, fine scale sharpening

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Status	Advanced success
Started	...
PixInsight job	10B4JEC9VBFJMCAFUTIM6RREPRG1DJAC
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	01h34m00s.21
RA (top/left)	01h30m50s.78
RA (top/right)	01h37m23s.82
RA (bottom/right)	01h37m11s.91
RA (bottom/left)	01h30m34s.52

Dec (center)	+30°38′59″.9
Dec (top/left)	+30°04′55″.7
Dec (top/right)	+30°08′56″.2
Dec (bottom/right)	+31°12′46″.7
Dec (bottom/left)	+31°08′43″.0

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