M51 Whirlpool Galaxy LRGB one night (Randall Schleier)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4277 · M 51 · NGC 5194 · NGC 5195 · Whirlpool Galaxy

M51 Whirlpool Galaxy LRGB one night, Randall Schleier

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M51 Whirlpool Galaxy LRGB one night

Revision title: M51 Whirlpool Galaxy LRGB one night with color boost

Powered byPixInsight

M51 Whirlpool Galaxy LRGB one night

Revision title: M51 Whirlpool Galaxy LRGB one night with color boost

I had some other galaxy targets in mind. Lately, I seem to have only one decent night for imaging every week or two. At the last minute, I decided to shoot M51 since it was well positioned and bright. M51 revisited....

Weather cooperated until about 4 am. Then winds picked up out of the SE and I had to shutdown. These are all 180s subs in LRGB. Seeing was average (2-2.5"). Subs were all shot above 40 degrees. I also decided to try some oversampling by binning 1x1 for .3 "/pixel. I normally shoot 3x3 at .9"/pixel. I wanted to see how that would affect post-processing - especially Blurx deconvolution. I'm not sure it made any difference other than to slow down processing with the massive subs.

This is color calibrated with SPCC. Color saturation boosted following SPCC. I also used GHS for this one. I have tried it on a few others with mixed results. I think I am getting the hang of it. What I want is to bring out the fainter regions without blowing out the overall image. Still need more experience with it. Thanks to all those that have posted videos about GHS to get me started.

The original is the SPCC version. Revision added with boosted color using PS Selective Color.

Randall

Original
Final
B

B

Title: M51 Whirlpool Galaxy LRGB one night with color boost

Description: PS color boost added to galaxy. Stars are close to SPCC results (only slight PI saturation on stars).

Original is with SPCC and only slight saturation increase.

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M51 Whirlpool Galaxy LRGB one night

Revision title: M51 Whirlpool Galaxy LRGB one night with color boost

M51 Whirlpool Galaxy LRGB one night

Revision title: M51 Whirlpool Galaxy LRGB one night with color boost

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M51 Whirlpool Galaxy LRGB one night

Revision title: M51 Whirlpool Galaxy LRGB one night with color boost

M51 Whirlpool Galaxy LRGB one night

Revision title: M51 Whirlpool Galaxy LRGB one night with color boost

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