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Planetary Nebula |
| Object : | M76, Little Dumbbell Nebula |
| Coordinates/Direction : | RA 01h42m, Dec +51o 34' |
| Object size : | 2.7'x1.8' |
| Object magnitude : | 10.1 |
| More to know : |
Wikipedia: https://en.wikipedia.org/ wiki/ Little Dumbbell Nebula |
M76, 2024-09-30
(Click on image and get one in full resolution in a new window)
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| Date : | 2024-09-30 |
| Time (UT) : | 19:53 to 20:49 |
| Mount : | SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019) |
| 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 : | 59x60 second, ISO400 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | flat, photometric color calibration |
| Weather : | some clouds, temperature +7o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : | Less than half the focal length compare with the one below. The camera has almost twice as many pixels. Not that big difference between the photos. |
M76, 2015-08-22
(Click on image and get one in full resolution in a new window)
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| Date : | 2015-08-22 |
| Time (UT) : | 23:16 to 00:22 |
| Mount : | SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019) |
| Lens/telescope : | TS130 APO f/7 910mm (682mm, f/5.2), 3" focuser |
| Corrector/Barlow : | Riccardi 2.5" field flatter, x0.75. T48 connector to camera |
| Field (FOV) : | 3.0 x 2.0o (full frame) before crop |
| camera : | Canon 5D Mk I, QE=0.25, full frame, 12 Mpixel, 12 bit |
| camera temperature: | About 3o 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 : | 26x120 second, ISO800 |
| Image process tool : | DSS, Fitswork, Irfanview |
| Processing : | crop, resize, stretch, flatten |
| Weather : | clear, temperature +9o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : | One of few 120 seconds exposure I have from my old Canon EOS 5D Mk I camera. It was a big moment when I bought this camera used, my first full frame camera. |
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