| 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 |
| Date : | 2023-10-04 to 2023-10-12 |
| Time (UT) : | - |
| Mount : | SkyWatcher HEQ5 controlled by Astroberry |
| Guide : | Ekos internal guider in dithering mode, 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) : | 6.8x4.5 degree, before cropping |
| Filter : | none |
| camera : | Canon 6D, controlled by Astroberry software |
| Film/CCD : | Raw |
| Exp. time : | 154x60 seconds, iso1600 |
| 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 class 9 |
| Comment : |
A new attempt with 2.5 hours exposure from three nights to bring the noise down.
Better but far from okay. |
| Date : | 2023-10-05 |
| Time (UT) : | 21:07 to 22:22 |
| Mount : | SkyWatcher HEQ5 controlled by Astroberry |
| Guide : | Ekos internal guider in dithering mode, 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) : | 6.8x4.5 degree, before cropping |
| Filter : | none |
| camera : | Canon 6D, controlled by Astroberry software |
| Film/CCD : | Raw |
| Exp. time : | 60x60 seconds, iso1600 |
| 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 class 9 |
| 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. |
| Date : | 2023-09-30 |
| Time (UT) : | 20:31 to 21:46 |
| Mount : | SkyWatcher HEQ5 controlled by Astroberry |
| Guide : | Ekos internal guider in dithering mode, 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) : | 6.8x4.5 degree, before cropping |
| Filter : | none |
| camera : | Canon 6D, controlled by Astroberry software |
| Film/CCD : | Raw |
| Exp. time : | 60x60 seconds, iso1600 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | cal bias, flat, photometric color calibration |
| Weather : | clear sky, Moon |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
Last September the spiral galaxy NGC 2403 was in correct position for a photo. It's an outlaying member to the M81 group. |
| Date : | 2023-09-30 |
| Time (UT) : | 20:31 to 21:46 |
| Comment : |
It's a small galaxy for my wide angle optic of 300 mm. |
English
(Click on the image and get the full resolution one in a new window)
(Click on the image and get the full resolution one in a new window)
(Click on the image and get the full resolution one in a new window)
