Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5447  ·  NGC 5449  ·  NGC 5450  ·  NGC 5451  ·  NGC 5453  ·  NGC 5455  ·  NGC 5457  ·  NGC 5461  ·  NGC 5462  ·  NGC 5471  ·  Pinwheel galaxy
M101-16 hrs, Jonathan Young
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M101-16 hrs

M101-16 hrs, Jonathan Young
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M101-16 hrs

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Description

M101 - 4 nights

My longest integration so far. Bortel 5.

Average stack with ~10% culling resulted in FWHM of 2.5-2.6 arc-sec prior to stretch.

Lum = 600 x 60s

Red = 130 x 60s

Green = 115 x 60s

Blue = 130 x 60s

64 dark, 16 flat, 16 darkflat.

CC welcome

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Description: More balanced presentation.

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M101-16 hrs, Jonathan Young

In these public groups

Central USA
Cloudy Nights