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Galaxies
Messier 81 & 82


Object : M81
Coordinates/Direction : RA: 09h55m, DEC: +69o03'
Object size : 26.9' x 14.1'
Object magnitude : 6.94
More to know : Wikipedia:
https://en.wikipedia.org/ wiki/ Messier 81
Object : M82
Coordinates/Direction : RA: 09h55m, DEC: +69o40'
Object size : 11.2' x 4.3'
Object magnitude : 8.41
More to know : Wikipedia:
https://en.wikipedia.org/ wiki/ Messier 82

M81 & M82

Galaxy Messier 81 & M82, 2024 (Click on image to get the wide angle image in full resolution in a new window)
Date : 2024-01-05
Time (UT) : 18:42 - 19:55
Mount : SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019)
Guide : ASI120 camera with 400 mm f/6.3 lens
Lens/telescope : TS130 APO f/7 910mm, 3" focuser
Corrector/Barlow : 3" field flatter, x1. T48 connector to camera
Field (FOV) : 2.25 x 1.5o (full frame) before crop
camera : Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature: About 6o C above surrounding temperature
Film/CCD : Raw, Cr2
Filter : none
Control system: Mount, camera, focus, guide (Ekos) controlled by Astroberry (KStars/Ekos Linux)
Exp. time : 28x60 seconds at ISO1600, dithering mode
Image process tool : Siril, Gimp, Irfanview
Processing : calibration dark, flat and photometric color
Weather : some clouds, quarter Moon, temperature -11o C
Site : Sweden, Stockholm, Hagsätra. Bortle 9
Free view Az: 20o-90o, 165o-185o, La: 20o-55o
Comment : One of three object I took this first night with the TS130 APO refractor. Lot of problem with clouds and had to erase most of the photo I took. With result, very noisy. M81 in center and M82 at top.

M81 219 minutes exposure

Galaxy Messier 81, 2023 (Click on image to get the wide angle image in full resolution in a new window)
Date : 2023-09-18 to 2023-10-15
Time (UT) : -
Mount : SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019)
Guide : 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) : 6.8x4.5o (full frame) before crop
camera : Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature: About 6o C above surrounding temperature
Film/CCD : Raw, Cr2
Filter : none
Control system: Mount, camera, focus, guide (Ekos) controlled by Astroberry (KStars/Ekos Linux)
Exp. time : 219x60 seconds at ISO1600, dithering mode
Image process tool : Siril, Gimp, Irfanview
Processing : cal dark, flat and photometric color
Weather : clear sky and no Moon
Site : Sweden, Stockholm, Hagsätra Bortle class 9
Comment : Collected all M81 images I had and got almost 4 hours of exposure time.

M82 219 minutes exposure

Galaxy Messier 82, 2023
Date : 2023-09-18 to 2023-10-15
Time (UT) : -
Comment : M82 galaxy. I will soon have my big refractor up and running, three times the focal length and twice the opening.

M81 & M82 2023-09-17

M81 & M82 galaxies, 2023 (Click on image to get the wide angle image in full resolution in a new window)
Date : 2023-09-17
Time (UT) : 23:39 to 00:59
Mount : SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019)
Guide : 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) : 6.8x4.5o (full frame) before crop
camera : Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature: About 6o C above surrounding temperature
Film/CCD : Raw, Cr2
Filter : none
Control system: Mount, camera, focus, guide (Ekos) controlled by Astroberry (KStars/Ekos Linux)
Exp. time : 60x60 seconds at ISO1600, dithering mode
Image process tool : Siril, Gimp, Irfanview
Processing : cal dark, flat and photometric color
Weather : clear sky and no Moon
Site : Sweden, Stockholm, Hagsätra Bortle class 9
Comment : Compare this photo with the one below, half the sub exposure time and taken from heavy light polluted sky. Still, not too bad.

M81 & M82 close up 2023-04-15

M81 & M82 galaxy, 2023 Sweden (Click on image to get the wide angle image in full resolution in a new window)
Date : 2023-04-15
Time (UT) : 20:37 to 21:58
Mount : SkyWatcher HEQ5, belt modified, low rider
Guide : 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) : 6.8x4.5o (full frame) before crop
camera : Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature: About 6o C above surrounding temperature
Film/CCD : Raw, Cr2
Filter : none
Control system: Mount, camera, focus, guide (Ekos) controlled by Astroberry (KStars/Ekos Linux)
Exp. time : 32x120 seconds at ISO1600, dithering mode
Image process tool : Siril, Gimp, Irfanview
Processing : cal dark, flat and photometric color
Weather : clear sky and no Moon
Site : Sweden, Stockholm, Björnö Nature reservation. Bortle class 4
Comment : The central part of the image. With a little more image processing there should be possible to bring out the colors better. Now I'm very eager to get my big APO refractor working again, three times the focal length and almost twice the opening.

M81 & M82 2023-02-19

M81 & M82 galaxies, 2023 (Click on image to get one in full resolution in a new window)
Date : 2023-02-19
Time (UT) : 21:35 to 22:46
Mount : SkyWatcher HEQ5, belt modified, low rider
Guide : 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) : 6.8x4.5o (full frame) before crop
camera : Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature: About 6o C above surrounding temperature
Film/CCD : Raw, Cr2
Filter : none
Control system: Mount, camera, focus, guide (Ekos) controlled by Astroberry (KStars/Ekos Linux)
Exp. time : 30x120 seconds at ISO1600, dithering mode
Image process tool : Siril, Gimp, Irfanview
Processing :  cal dark & flat
Weather : clear sky and no Moon, no white snow on the ground
Site : Sweden, Stockholm, Björnö Nature reservation. Bortle class 4
Comment : This evening it was a perfect clear sky and dark to with no Moon. I only got time to take photos of one object. I choose a galaxy pair, the M81 & M82, objects I don't have a clear view to from the balcony. The clear sky really gave good result, lot of details in the image even if it was shot with only 300 mm focal length. There are even more galaxies, look at the high resolution photo.

M81 & M82 close up 2023-02-19

M81 & M82 galaxy, 2023 Sweden
Date : 2023-04-15
Time (UT) : 21:35 to 22:46
Comment : A crop around the center with its three galaxies, M81, M82 and NGC 3077. Perfect clear sky this night and that give result. Even if the lens is a short 300 mm a lot of details are there. Now I'm eager to get my big refractor rebuilt to this standard. I have already started with that, the focuser is waiting for a driver board.

M81 & M82 2019-01-19

M81 & M82 galaxies, 2019
Date : 2019-01-19
Time (UT) : 17:50 to 18:06
Mount : SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019)
Guide : QHY5 camera with 400 mm f/6.3 lens
Lens/telescope : TS130 APO f/7 910mm, 3" focuser
Corrector/Barlow : 3" field flatter, x1. T48 connector to camera
Field (FOV) : 2.25 x 1.5o (full frame) before crop
camera : Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature: About 6o C above surrounding temperature
Film/CCD : Raw, Cr2
Filter : none
Control system : Mount by EQMOD, camera by APT, guide by PHD2, focuser by USB-focus, ASCOM Windows PC
Exp. time : 21x30 seconds at ISO1600, dithering mode
Image process tool : AstroImageJ, Fitswork, Irfanview
Processing : level, cal flat, dithering no bias dark noise filter
Weather : clear with some clouds drifting by
Site : Sweden, Stockholm, Hagsätra. Bortle class 4
Comment : My first photo of these two galaxies, could hardly see them between all obscurations which make it a short exposure time. Down left is a weak galaxy, NGC 3077.

M81 close up 2019-01-19

M81 galaxy, 2019
Date : 2019-01-19
Comment : Need a lot more exposure time on this object, at least one hour.

M82 clos up 2019-01-19

M82 galaxy, 2019
Date : 2019-01-19
Comment : Taken from a darker place and with longer exposure you will see a red streak crossing the galaxy.
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