Newtonian image of M51a and NGC5915 (high dynamic range composition) (Tim Hawkes)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4277 · IC 4278 · M 51 · NGC 5194 · NGC 5195 · Whirlpool Galaxy

Newtonian image of M51a and NGC5915 (high dynamic range composition), Tim Hawkes

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Newtonian image of M51a and NGC5915 (high dynamic range composition)

Powered byPixInsight

Newtonian image of M51a and NGC5915 (high dynamic range composition)

A realtively high resolution luminance image comprising 796x3s of selected mono camera frames (at B6) was combined into a high dynamic range 64kb composition along with the luminance from 167 x 40s of OSC RGB Newtonian frames (F 4.0, f =1200 mm) also at B6. as well as 50x 70s OSC frames and 40x40s frames from a Bortle 4 site (the B4 frames were more highly weighted in the overall integration according to their measured SNR). The 3s luminance image - effectively lucky imaging mainly describing the galaxy core was sharpened by LR deconvolution (PixInsight) -original version or BlurXt in the final version. The overall high dynamic range luminance image was then combined into the OSC RGB image and further stretched in PI using an Exponential stretch, local Histogram equalization and Curves.

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Status	Basic success
Started	...
Astrometry.net job	6860548
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Newtonian image of M51a and NGC5915 (high dynamic range composition)

Newtonian image of M51a and NGC5915 (high dynamic range composition)

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Newtonian image of M51a and NGC5915 (high dynamic range composition)

Newtonian image of M51a and NGC5915 (high dynamic range composition)

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Acquisition details

Description

Comments

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Sky plot

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