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Contains:  NGC 4328, NGC 4322, M 100, NGC 4321, NGC 4312, IC 783
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Messier 100 and NGC 4312, 


            Toshiya Arai
Messier 100 and NGC 4312

Messier 100 and NGC 4312

Technical card

Imaging telescope or lens:Takahashi CCA250

Imaging camera:Nikon D810A

Mount:Skywatcher EQ8

Guiding telescope or lens:Takahashi GT-40

Guiding camera:Starlight Xpress Lodestar2

Focal reducer:Takahashi Extender CR1.5X

Software:PixInsight 1.8Adobe Photoship CC 2017FlatAidePro

Resolution: 3094x2166

Dates:March 8, 2019

Frames: 48x300" ISO1600

Integration: 4.0 hours

Avg. Moon age: 1.67 days

Avg. Moon phase: 3.11% job: 2582991

RA center: 185.669 degrees

DEC center: 15.726 degrees

Pixel scale: 1.104 arcsec/pixel

Orientation: 2.420 degrees

Field radius: 0.579 degrees

Locations: Shirosato, Shirosato-town, Ibaraki, Japan; Arakine, Isumi-city, Chiba, Japan

Data source: Traveller


2013/3/15 Kenko SE200N / QSI583ws L 20 x 300sec R,G,B 18 x 300sec
2017/1/28 CCA250+Nikon TC14III / Nikon D810A ISO800 21 x 600sec

Total Exposure: 10 h 44m



Toshiya Arai
License: None (All rights reserved)

Sky plot

Sky plot


Messier 100 and NGC 4312, 


            Toshiya Arai