English
|
Advertisement / Annons: |
Galaxy |
| Object : | M108 (NGC 3556) |
| Coordinates/Direction : | RA: 11h11m, DEC: +55o40' |
| Object size : | 8.7' x 2.2' |
| Apparent magnitude : | 10.0 |
| Distance : | 14.1 Mly |
| No solar mass : | 1.25e14 |
| Type : | SB |
| Discovered by : | Pierre Mechan, year 1781 |
| Find in constellation : | Ursa Major |
| More to know : |
Wikipedia: https://en.wikipedia.org/ wiki/ Messier 108 |
M108, 2024-11-18
|
| Date : | 2024-11-18 |
| Time (UT) : | 22:03 to 23:56 |
| Mount : | SkyWatcher EQ6 Pro, Beltdrive (DIY 2019) |
| Lens/telescope : | Pentax 645 FA 300 mm ED f/4 (set to f/4) |
| 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 KStars/Ekos Linux, 64-bit (2024) |
| Exp. time : | 90x60 seconds at ISO400 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | flat, astrometric col calibrated |
| Weather : | Moon Phase 91%, clear sky, -1o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : | Another night, more exposures but almost full Moon. |
M108, 2024-10-30
(Click on image to get one in full resolution in a new window)
|
| Date : | 2024-10-30 |
| Time (UT) : | 21:24 to 22:24 |
| Mount : | SkyWatcher EQ6 Pro, Beltdrive (DIY 2019) |
| Lens/telescope : | Pentax 645 FA 300 mm ED f/4 (set to f/4) |
| 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 KStars/Ekos Linux, 64-bit (2024) |
| Exp. time : | 48x60 seconds at ISO400 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | flat, astrometric col calibrated |
| Weather : | clear sky, +7o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : | A weak galaxy 28'000'000 light years away. It cover an angle of only 8' and need a long focal length telescope to get some details out from it. |
|
| Go Back |