| Object : | Chi Draconis, spectroscopic double star, another name of it, HD170153 |
| Coordinates/Direction : | RA: 18h22m, DEC: +72o43' |
| Object size : | Double star separation 30 mas |
| Object magnitude : | Primary 5.6, Secondary 2-84 to 2.98 |
| More to know : |
Double Star, Wikipedia:
https://en.wikipedia.org/ wiki/ Double star
Chi Draconis:
https://en.wikipedia.org/ wiki/ Chi Draconis
|
| Date : | 2023-03-15 |
| Time (UT) : | 20:49 to 21:40 |
| Mount : | Skywatcher EQ6 Pro controlled by EQMOD and
KStars Ekos/Indi |
| 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, external focus motor,
Pentax 645 project page |
| Corrector/Barlow : | - |
| Field (FOV) : | 6.8x4.5 degree, before cropping |
| Filter : | none |
| camera : | Canon 6D, temperature +7 C. Controlled by
KStars Ekos/Indi |
| Film/CCD : | Raw |
| Exp. time : | 60x30 seconds, iso1600 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | flat calibration, no darks, synthetic bias, photometric color calibration |
| Weather : | clear sky, temperature 0 C |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
This binary star is a spectroscopic double star.
Which means that it it looks like one star but with spectroscopy it can be seen that it's a double star system.
The two stars have a separation as we have between our Earth to the Sun.
Zoom into the image above, can you recognize any object ?
|
| Date : | 2023-03-15 |
| Time (UT) : | 20:49 to 21:40 |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
A crop around the binary star, it needs a super telescope to resolve these two stars.
The purple color of the star is because the green channel is oversaturated.
Later I can correct for this with new software. |
| Date : | 2023-03-15 |
| Time (UT) : | 20:49 to 21:40 |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
At the right edge there is a weak object,
NGC 6434,
found it to be a spiral galaxy with magnitude 13.2.
There are many more objects in the full field image.
Look here at the plate solved image by Astrometry:
Chi Draconis plate solved.
It opens in a new window. |
English
(Click on the image to get one in full resolution in a new window)
