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Re: CatchingPhotons - Basic tutorials for astronomy and astr

PostPosted: Fri Apr 10, 2020 10:47 pm
by AstroChris
https://youtu.be/go3ETbptTS8

Hey folks,
this video will be about different types of night time photography.
No matter whether you choose a simple tripod and a DSLR or a small tracking mount, or the sturdy and heavy tracking mounts for DSOs. You should know the basic vocabularies and how everything connects with things like:
x star movement
x focal length
x exposure time
x polar alignment
and tracking.
So a lot to explore: Let’s get started!
Greetings
Chris

Re: CatchingPhotons - Basic tutorials for astronomy and astr

PostPosted: Wed May 06, 2020 2:54 pm
by AstroChris
https://youtu.be/5dJtRFbkGCg

Hey folks,
in today's video we will take a look at the most important part of our gear:

--The Mount--

I do stress that a lot in this video – but I can’t stress this enough:

A proper and solid mount – capable of carrying your scope with ease – will not only be useful. It will be essential to your ongoing journey to the skies. Never underestimate that.
You might have bought a good optic on top. But if your mount can’t serve it well, every image will be lost and no data can be acquired. So: prioritize the mount over the optic!

In this video ee will unveil different mount types – how they work and how to use them.
It will be about: ALT/AZ Mounts vs EQ Mounts

In the end you will hopefully be able to judge the overwhelming variety of mounts out there.
Clear skies everyone and till next time here on catchingphotons!

Chris

Re: CatchingPhotons - Basic tutorials for astronomy and astr

PostPosted: Tue May 12, 2020 10:36 am
by AstroChris
Image
https://youtu.be/FIEycMkZcDw
Hey folks,

today's video will be all about the technical term seeing:

What factors influence our observation session?
How do different seeing conditions look like?

For discussing this topic I took three images of Venus:
x one with bad seeing
x one with intermediate seeing and
x one with quite good seeing.

1st:
Image
2nd:
Image
3rd:
Image

I think its funny to compare the images and the raw-data-videos with each other.

What do you think? :-)

Greetings
Chris

Re: CatchingPhotons - Basic tutorials for astronomy and astr

PostPosted: Sun Jun 14, 2020 7:39 pm
by AstroChris
Image

https://youtu.be/BL31BMg8fLg

Hey folks,

today’s video is about the term stacking.
We will cover the basic principles of stacking – including the basic math and statistics behind it. Why are some images noisy and others are not? Thereby we will talk about random photons, the law of large numbers, distribution patterns….

How long should the total integrated exposure time be? And how long a single light frame?

For visual representation I wrote a python-script creating a virtual sensor with virtual photons representing virtual physical objects.
I took the idea from Astrostace: https://www.youtube.com/channel/UC8sYnv ... fuZedmzeKg
Definitely check out her channel!

I hope you enjoy this video! Clear skies everyone!
Chris

Re: CatchingPhotons - Basic tutorials for astronomy and astr

PostPosted: Mon Jun 29, 2020 9:12 pm
by AstroChris
Image

https://youtu.be/RvLl936NG5U

Hey folks,

today we want to compare two subtopics of astronomy: Deep Sky Imaging vs Planetary Imaging.
Those two sub-topics don’t have very much in common – except taking images under the dark night sky. And because of the inherent difference of those two sub-topics there are professional amateur astronomers totally devoted to the one or the other section.

We will learn what the specific properties of DSO or Planetary imaging are, what differences there are concerning the hard- and software and so on and so forth.

I hope you enjoy the video and I hope it will help you getting those two sub-topics sorted out.

Clear skies everyone and till next time here on catchingphotons!
Chris