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Contains:  M 101, NGC 5457, NGC 5473, NGC 5474, NGC 5485
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M101 with Samyang 135mm and ASI178MM, 


M101 with Samyang 135mm and ASI178MM
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M101 with Samyang 135mm and ASI178MM

Technical card

Dates:May 5, 2019

Baader B 1.25'' Filter: 54x30" (gain: 150.00) 14C
Baader G 1.25'' Filter: 48x30" (gain: 150.00) 14C
Baader R 1.25'' Filter: 42x30" (gain: 150.00) 14C
Baader UV/IR Cut: 75x30" (gain: 150.00) 14C

Integration: 1.8 hours

Darks: ~254

Avg. Moon age: 0.54 days

Avg. Moon phase: 0.32%

Bortle Dark-Sky Scale: 3.00

Basic astrometry details job: 3250931

RA center: 14h 2' 55"

DEC center: +54° 20' 24"

Pixel scale: 4.346 arcsec/pixel

Orientation: 183.181 degrees

Field radius: 1.469 degrees

Resolution: 2000x1376

Data source: Traveller


- My first LRGB picture !

- Stacked in DSS, drizzle x3, 90% of light kept.

- I need do improve the SNR by doing more integration time and maybe longer exposures with guiding.



License: None (All rights reserved)

Sky plot

Sky plot


M101 with Samyang 135mm and ASI178MM, 



In these public groups

Samyang 135 f/2