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



    
        

            Ben
M101 with Samyang 135
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M101 with Samyang 135

Technical card

Imaging telescopes or lenses:Samyang 135mm f/2

Imaging cameras:ZWO ASI224MC

Mounts:Skywatcher Star Adventuer

Software:PixInsight 1.8

Filters:Baader UV/IR Cut

Accessory:Homemade Motorized Samyang focuser


Dates:April 30, 2019

Frames:Baader UV/IR Cut: 193x30" (gain: 150.00) 21C

Integration: 1.6 hours

Darks: ~161

Flats: ~100

Avg. Moon age: 25.33 days

Avg. Moon phase: 18.68%

Bortle Dark-Sky Scale: 3.00


Basic astrometry details

Astrometry.net job: 2709771

RA center: 14h 2' 45"

DEC center: +54° 19' 44"

Pixel scale: 1.990 arcsec/pixel

Orientation: 355.071 degrees

Field radius: 1.298 degrees


Resolution: 3765x2810

Data source: Traveller

Description

My best attempt at shooting M101

- Lens opened at f/2.8 => better sharpness than f/2 I previously used

- Better location, less polluted

- Lot of darks used, made at home with a cooling/regulation setup to match the light temperatures

Comments

Author

netspoon
Ben
License: None (All rights reserved)
2310
Like

Revisions

  • M101 with Samyang 135, 



    
        

            Ben
    Original
  • Final
    M101 with Samyang 135, 



    
        

            Ben
    B

B

Description: Reprocessed

Sky plot

Sky plot

Histogram

M101 with Samyang 135, 



    
        

            Ben

In these public groups

Samyang 135 f/2