English
|
Advertisement / Annons: |
Nebula |
| Object : | NGC 2244 |
| Coordinates/Direction : | RA: 06h31m, DEC: +04o56' |
| Object size : | 24' |
| Object magnitude : | 4.8 |
| More to know : |
Wikipedia: https://en.wikipedia.org/ wiki/ NGC_7822 https://en.wikipedia.org/ wiki/ Rosette_Nebula |
NGC 7023 Iris Nebula 2024-03-06, processed 2024
(Click on image and get a full resolution image in a new window)
|
| Date : | 2021-12-24 |
| Time (UT) : | 21:22 - 22:15 |
| Mount : | SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019) |
| Guide : | QHY5 camera with 400 mm f/6.3 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 by EQMOD, camera by APT, guide by PHD2, focuser by USB-focus, ASCOM Windows PC |
| Exp. time : | 43x30 seconds = 22 minutes, iso1600, dithering mode |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | synthetic bias, flat, photometric color calibration |
| 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 : | This open cluster sit inside the Rosette Nebula. The nebulosity from the nebula is impossible to se from light polluted environment but the open cluster is visible. The size of the nebula is 80' and the open cluster 24', the Moon is 30' as a comparison. This night was cold, -9o C, the coldest I have tested the equipment at is -15o C. |
|
| Go Back |