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| From Astro picts by tanguy |
-point or observe directly the sun without a full aperture sun filter: destroy fast your eye/scope
-or point your scope to objects too close to the sun: light can be catch and focused inside the telescope tube, destroying it... or catch your eyes and destroy them too...
-keep your finder caps to avoid head burns....
Also use a UV/IR before the eyepiece, as your scope collects also UV/IR scattered in the 'blue' sky, it will avoid fast aging of your eyes.
Daylight astro is mainly observing sky objects with a magnitude higher than daylight itself, so it's mainly:
-Sun
-Moon
-planets: Venus, Mercure, Jupiter, Saturn
-artificial satellites
Sun and moon are easy targets, they are also needed to:
-initialize your coordinate system
-usefull to tune focus
Typical sun observing session is:
-installing the scope (keeping it aperture closed)
-levelling and orienting the mount (compass+level)
-installing sun and UV/IR filters on a long focal eyepiece
-pointing the sun using the tube shadow
-reaching focus
-well... observe!!!!!
To reach some planets, you have 2 options, using:
-absolute coordinates
-relative coordinates from the sun or the moon: easy to do, but you need to start from your reference, so never forget the filter
For the first one, you need to initialize the coordinate system: it depends on what you have:
-classical setting circles: if your mount is equatorial and motorized, you just need to set the DA date.
-digital setting circles: it's trickier as some computer software need two points to initialize... so if you have only the sun or the moon you still need the classical setting circles.
Once you have pointed your scope, check the sun is far enough before removing the sun filter.
Pro an cons for daylight observing:
pros:
- some objects need it...
- no light pollution!!!
- avoid observing Mercure/Venus close to the horizon with bad seeing
- fun
- Halpha observing next step!!!!!
cons:
-sunburns
-heatwaves
Tips:
-cover your scope with with clothes to delay heatwaves inside/front of your scope
-How to reach focuse with trees too close: plane tacks or clouds!!!
-before each time you move you scope (observing or packing, unpacking), check twice if you need the sun filter or the cap!!!!!!!
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| From Astro picts by tanguy |
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| From Astro picts by tanguy |
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| From Astro picts by tanguy |
