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Galaxy
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| Object : | NGC 6503 |
| Coordinates/Direction : | RA: 17h49m, DEC: +70o08' |
| Object size : | 7.1' x 2.4' |
| Apparent magnitude : | 10.2 |
| Distance : | 18 Mly |
| No solar mass : | - |
| Type : | SAB |
| Discovered by : | Arthur von Auwers, year 1854 |
| Find in constellation : | Draco |
| More to know : |
Wikipedia: https://en.wikipedia.org/ wiki/ NGC_6503 |
NGC 6503 galaxy, 2026-03-10, crop
(Click on image and get one in full resolution in a new window)
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| Date : | 2026-03-10 |
| Time (UT) : | 21:43 to 22:40 |
| Mount : | SkyWatcher EQ6 Pro, Beltdrive (DIY 2019), OnStep driver (DIY 2025) |
| Guide : | QHY5 camera with off-axis |
| Lens/telescope : | TS130 APO f/7 910mm, 3" focuser |
| Corrector/Barlow : | 3" field flatter, 1.0x |
| Field (FOV) : | 2.25 x 1.5o (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 : | 23x120 seconds, iso400, dithering mode |
| Image process tool : | Siril, GraXpert, SyQon, Gimp, Irfanview |
| Processing : | flat, drizzle, photometric color calibration, background, stretch |
| Weather : | Moon phase 57%, Temperature +6o C, 63% rel Humidity |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : | The galaxy only 7'x2' still some structure can be seen on the galaxy. |
NGC 6503 galaxy, 2023-04-01, crop
(Click on image and get one in full resolution in a new window)
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| Date : | 2023-04-01 |
| Time (UT) : | 21:43 to 22:40 |
| 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 (set to f/4) |
| 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, iso1600, dithering mode |
| Image process tool : | Siril, GraXpert, SyQon, Gimp, Irfanview |
| Processing : | flat, drizzle, photometric color calibration, background, separation galaxy and stars, desaturate, synthetic stars, stretch |
| Weather : | Moon phase 79%, Temperature +5o C, -% rel Humidity |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : | This photo was taken before I adjusted the tilt on camera/lens. I used desaturate and star synthetic to correct the stars. There are many objects in the background, see here: NGC 6503 plate solvedopens in a new window. |
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