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Galaxy |
| Object : | NGC 2403, Caldwell 7 Galaxy |
| Coordinates/Direction : | RA: 07h36m, DEC: +65o36' |
| Object size : | 22' x 12' |
| Object magnitude : | 8.9 |
| More to know : |
Wikipedia: https://en.wikipedia.org/ wiki/ NGC 2403 |
NGC 2403, 2024-09-14
(Click on the image and get the full resolution one in a new window)
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| Date : | 2024-09-14 |
| Time (UT) : | 22:04 - 23:06 |
| 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 : | 59x60 seconds, iso400, dithering every 3th |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | flat, photometric color calibration |
| Weather : | clear sky, temperature +14o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : | One more image with the Nikon D800 camera and the Pentax FA lens. |
NGC 2403 long exposure, 2023-10-04 to 2023-10-12
(Click on the image and get the full resolution one in a new window)
|
| Date : | 2023-10-04 to 2023-10-12 |
| Time (UT) : | - |
| 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 : | 154x60 seconds, iso1600, dithering mode |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | crop, resize, level, cal dark, bias, flat, photometric color calibration |
| Weather : | clear sky |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : | A new attempt with 2.5 hours exposure from three nights to bring the noise down. Better but far from okay. |
NGC 2403 2023-10-05
(Click on the image and get the full resolution one in a new window)
|
| Date : | 2023-10-05 |
| Time (UT) : | 21:07 to 22:22 |
| 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 : | 60x60 seconds, iso1600, dithering mode |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | crop, resize, level, cal dark, bias, flat, photometric color calibration |
| Weather : | clear sky |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : | A new attempt at a night without the Moon. I really need my bigger refractor for this object. There ore other objects, even smaller to examine in the full resolution image. Have a look here at the plate solved image: NGC 2403 Astrometry plate solved. |
NGC 2403 2023-09-30
(Click on the image and get the full resolution one in a new window)
|
| Date : | 2023-09-30 |
| Time (UT) : | 20:31 to 21:46 |
| 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 : | 60x60 seconds, iso1600, dithering mode |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | cal bias, flat, photometric color calibration |
| Weather : | clear sky, Moon |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : | Last September the spiral galaxy NGC 2403 was in correct position for a photo. It's an outlaying member to the M81 group. It's a small galaxy for my wide angle optic of 300 mm. |
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