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Galaxies |
| 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, 2024-09-12
(Click on image to get the wide angle image in full resolution in a new window)
|
| Date : | 2024-09-12 |
| Time (UT) : | 00:46 - 01:57 |
| Mount : | SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019) |
| Guide : | ASI120 camera with off-axis |
| Lens/telescope : | Pentax 645 FA 300 mm ED f/4 (medium format lens) |
| Corrector/Barlow : | - |
| Field (FOV) : | 6.8x4.5o (full frame) before crop |
| camera : | Nikon D800, QE=0.56, full frame, 36 Mpixel, 14 bit |
| camera temperature: | - , no temperature sensor |
| Film/CCD : | Raw, NEF |
| Filter : | none |
| Control system: | Mount, camera, focus, guide (Ekos) controlled by Astroberry (KStars/Ekos Linux, 64-bit) |
| Exp. time : | 58x60 seconds at ISO400, dithering every 3d |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | calibration flat and photometric color |
| Weather : | temperature +14o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : | This really exciting, new equipment. A Nikon D800 camera and a medium format Pentax 645 FA 300mm f/4 ED lens. More pixels, lower static pattern, better optic correction. |
M81 & M82, 2024-01-05
(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 to 90o, 165o to 185o, Alt: 20o to 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, 2023-09-18 to 2023-10-15
(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, 2023-09-18 to 2023-10-15
|
| 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
(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, 2023-04-15
(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
(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
|
| 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
(Click on image to get one in full resolution in a new window)
|
| 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
|
| Date : | 2019-01-19 |
| Comment : | Need a lot more exposure time on this object, at least one hour. |
M82 clos up 2019-01-19
|
| 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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