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Constellation
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| Object : | Constellation Draco |
| Coordinates/Direction : | RA: 17h--m, DEC: +65o--' |
| Object size : | 76 stars |
| Object magnitude : | - |
| More to know : |
Constellation Draco, Wikipedia: https://en.wikipedia.org/ wiki/ Draco |
Constellation Draco 2024:
Credit: CdC / Skychart
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| Date : | 2024-03-07 |
| Comment : | Sometimes it's difficult to get ideas of what objects to take photography on. This time I chose to take photos of the stars in the constellation Draco and investigate what objects there are in its surroundings. The red rectangle is the field of my photography equipment, a 300 mm lens with a full frame camera. It's centered on each stars with a circle. |
1. Star Phi Draconis:
(Click on image to get a full resolution in a new window)
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| Date : | 2024-03-07 |
| Time (UT) : | 21:34 to 22:54 |
| Mount : | SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019) |
| 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 : | 59x60 seconds, iso1600, dithering mode |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | flat calibration, no darks, synthetic bias, photometric color calibration |
| Weather : | clear sky, temperature +3o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : |
The star Phi Draconis in center.
It's a 4.22 magnitude stars with a small variation with a period of 1.7 days.
There are many more objects in the full field image.
Look here at the plate solved image by Astrometry:
Phi Draconis plate solved.
It opens in a new window. Here are some of the deep sky objects you will find: Most of them are galaxies. |
2. Star Eta Draconis:
(Click on image to get a full resolution in a new window)
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| Date : | 2024-03-07 |
| Time (UT) : | 19:34 to 20:55 |
| Mount : | SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019) |
| 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 : | flat calibration, no darks, synthetic bias, photometric color calibration |
| Weather : | clear sky, temperature +3o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : |
Eta Draconis, a 2.73 magnitude star.
There are many more objects in the full field image.
Look here at the plate solved image by Astrometry:
Eta Draconis plate solved.
It opens in a new window. Here are some of the deep sky objects you will find:
Most of them are galaxies. |
3. Star Theta Draconis:
(Click on image to get a full resolution in a new window)
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| Date : | 2024-03-11 |
| Time (UT) : | 20:18 to 21:40 |
| Mount : | SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019) |
| 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 : | 59x60 seconds, iso1600, dithering mode |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | flat calibration, no darks, synthetic bias, photometric color calibration, desaturate stars |
| Weather : | clear sky, temperature +3o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : |
Theta Draconis, a 4.01 magnitude star.
It's a binary star at a 68 light years distance.
This time I used the function "Desaturate Stars", it's used to restore the stars original shape before saturated.
I'm not sure if I can say they look better, from a diffuse pink center to a smaller strong red dot.
There are many more objects in the full field image.
Look here at the plate solved image by Astrometry: Theta Draconis plate solved.
It opens in a new window. Here are some of the deep sky objects you will find:
Most of them are galaxies. |
4. Star Iota Draconis:
(Click on image to get a full resolution in a new window)
|
| Date : | 2024-03-17 |
| Time (UT) : | 18:31 to 20:55 |
| Mount : | SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019) |
| 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 : | 60x30 seconds + 60x60 seconds = 90 minutes, iso1600, dithering mode |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | flat calibration, synthetic bias, photometric color calibration |
| Weather : | clear sky, temperature -2o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : |
Iota Draconis, a 3.3 magnitude star.
In 2002 they found a planet orbiting it. I have split the exposure in two sets, one of 30 seconds and the other at 60 seconds. Maybe this handle the strong stars better than using the Desaturate function.
There are many more objects in the full field image.
Look here at the plate solved image by Astrometry: Iota Draconis plate solved.
It opens in a new window. Here are some of the deep sky objects you will find: Most of them are galaxies. |
5. Star Zeta Draconis:
(Click on image to get a full resolution in a new window)
|
| Date : | 2024-03-17 |
| Time (UT) : | 21:04 to 22:17 |
| Mount : | SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019) |
| 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 = 59 minutes, iso1600, dithering mode |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | flat calibration, synthetic bias, photometric color calibration |
| Weather : | clear sky, temperature -2o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : |
Zeta Draconis, a 3.2 magnitude star.
It's a binary star at a 330 light years distance.
There are many more objects in the full field image.
Look here at the plate solved image by Astrometry: Zeta Draconis plate solved.
It opens in a new window. Here are some of the deep sky objects you will find: Most of them are galaxies, Dra objects are stars. |
6. Star Delta Draconis:
(Click on image to get a full resolution in a new window)
|
| Date : | 2024-03-17 |
| Time (UT) : | 22:36 to 23:41 |
| Mount : | SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019) |
| 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 : | 47x60 seconds = 47 minutes, iso1600, dithering mode |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | flat calibration, synthetic bias, photometric color calibration |
| Weather : | clear sky, temperature -4o C |
| Site : | Sweden, Stockholm, Hagsätra.
Bortle 9 Free view Az: 20o to 90o, 165o to 185o, Alt: 20o to 55o |
| Comment : |
Delta Draconis, a 3.1 magnitude star. It's a yellow bright star t a 97 light years distance.
There are many more objects in the full field image.
Look here at the plate solved image by Astrometry:
Delta Draconis plate solved.
It opens in a new window. Here are some of the deep sky objects you will find: Only one deep sky object around this star. |
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