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Galaxy
Messier 94


Object : M94
Coordinates/Direction : RA: 12h50m, DEC: +41o07'
Object size : 11' x 9'
Object magnitude : 8.99
More to know : Wikipedia:
https://en.wikipedia.org/ wiki/ Messier 94

M94 2023-01-03

Gakaxy M94, 2023
Date : 2023-01-03
Time (UT) : 23:22 to 00:02
Mount : SkyWatcher HEQ5 controlled by Astroberry
Guide : Ekos internal guider in dithering mode, QHY5 camera with 200 mm f/3.5 lens
Lens/telescope : Pentax 645 300 mm ED f/4 (medium format lens)
Corrector/Barlow : -
Field (FOV) : 6.8x4.5 degree, before cropping
Filter : none
camera : Canon 6D, controlled by Astroberry software
Film/CCD : Raw
Exp. time : 30x60 seconds, iso1600
Image process tool : AstroImageJ, Gimp, Irfanview
Processing : cal dark, flat
Weather : clear
Site : Sweden, Stockholm, Hagsätra. Bortle class 9
Comment : This night I planning to take photos of the comet ZTF. But I have to wait to 3 am in the morning. The time before I use to take photos of the galaxy M 94. It's four years since I took a photo of it. In that time I used my big TS130 refractor, even with that one the galaxy isn't big in the view. Now I only have a tiny 300 focal lens, 1/3 of the telescope. Will I see anything of the galaxy ? The galaxy is the little bright dot in center.

Crop around the galaxy M94 2023-01-03

Gakaxy M94, 2023
Date : 2023-01-03
Time (UT) : 23:22 to 00:02
Comment : If I crop the photo to 1:1 pixel scale it's easier to see that it's a galaxy. Pretty well when in mind the small telescope I use and from the light polluted environment.

M94 2019-01-19

Gakaxy M94, 2019
Date : 2019-01-19
Time (UT) : 20:31 to 21:05
Mount : Skywatcher EQ6 Pro controlled by EQMOD and APT
Guide : PHD2 in dithering mode and guide telescope 400 mm f/6.3 QHY5
Lens/telescope : TS130, 910mm f/7
Corrector/Barlow : Flat field corrector 3" x1
Field (FOV) : 2.25x1.5 degree, before cropping
Filter : none
camera : Canon 6D, controlled by APT
Film/CCD : Raw
Exp. time : 24x60 seconds, iso1600
Image process tool : AstroImageJ, Fitswork, Irfanview
Processing : demosaic, no cal dark&bias, only dithering median stacking, flat cal, crop, level, gamma
Weather : clear
Site : Sweden, Stockholm, Hagsätra. Bortle class 9
Comment : M94 is a galaxy discovered 1781 by the French astronomer Pierre Mechain. It needs a lot of more exposure, many hours and longer focal length. Interesting to see the weak halo around the arms of the galaxy, it's also arms of the galaxy.
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