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en:ost:ccds:astrofotografie [2016/10/26 01:16] – [Photography with the Webcam] rhainich | en:ost:ccds:astrofotografie [2021/06/21 13:16] (current) – [Photography with a DSRL] rhainich | ||
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====== Astro photography ====== | ====== Astro photography ====== | ||
- | The OST can, of course, be used for astro photography. Since two of our [[en: | + | The OST can, of course, be used for astro photography. Since three of our [[en: |
The images can be found in our [[en: | The images can be found in our [[en: | ||
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| | ||
* useful webpages: | * useful webpages: | ||
- | * [[ttp://www.calsky.com/|CalSky]] | + | * [[https://telescopius.com | Telescopius]] |
* [[http:// | * [[http:// | ||
* further websites can be found [[en: | * further websites can be found [[en: | ||
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==== Filter choice ==== | ==== Filter choice ==== | ||
- | There are several different | + | There are several different [[en: |
==== Exposure times ==== | ==== Exposure times ==== | ||
* extend here -- maybe a small galery | * extend here -- maybe a small galery | ||
- | * [[http:// | + | * [[http:// |
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*Flatfields | *Flatfields | ||
- select the same filter as used for the " | - select the same filter as used for the " | ||
- | - attach (carefully!) the flatfield foil (from the lab room , 1.113) and switch it on (power supply in the locker in the dome) | + | - attach (carefully!) the flatfield foil (from the lab room , 2.009) and switch it on (power supply in the locker in the dome) |
- please note, the flatfield foil must evenly illuminate the whole aperture of the telescope | - please note, the flatfield foil must evenly illuminate the whole aperture of the telescope | ||
- | - take a number of exposures with short exposure times (around 3 seconds), prevent the CCD from overflowing | + | - take a number of exposures with short exposure times (around 3 seconds), prevent the camera chip from overflowing |
| | ||
==== Data reduction / Stacking ==== | ==== Data reduction / Stacking ==== | ||
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===== Photography with a DSRL ===== | ===== Photography with a DSRL ===== | ||
- | We have a Canon EOS 700D, which is a digital (single) reflex camera (DSLR). This camera allows for very short exposure times (until 1/4000s), while our CCDs only allow for a minimal exposure time of 0.09s. Accordingly, | + | We also have a Canon EOS 700D, which is a digital (single) reflex camera (DSLR). This camera allows for very short exposure times (until 1/4000s), while our CCDs only allow for a minimal exposure time of 0.09s. Accordingly, |
Interesting objects are e.g.: | Interesting objects are e.g.: | ||
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* the Moon | * the Moon | ||
* comets | * comets | ||
+ | |||
+ | We also have an article on [[en: | ||
+ | |||
+ | <WRAP center round info 60%> | ||
+ | **Our new camera, the QHY600M, is a CMOS camera and therefore also allows much shorter exposure times than the old CCD cameras and on the other hand does not have the disadvantages of a DSLR camera, such as a high dark current. More about this when we have more experience... :-).** | ||
+ | </ | ||
==== Lucky imaging how-to ==== | ==== Lucky imaging how-to ==== | ||
This part will hopefully be filled soon... | This part will hopefully be filled soon... | ||
- | ===== Photography with the webcam | + | ===== Photography with a video camera |
* we own one of these, too ;-) | * we own one of these, too ;-) | ||
\\ | \\ | ||
**To be continued...** | **To be continued...** |