What can you observe with the Bresser Pollux 150×1400?
Can you use it to observe Uranus, Neptune, or even Pluto? Can you use it to photograph deep sky objects?
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Neptun/Uranus is possible, with an eyepiece with a focal length of 7mm or less, you also achieve an enlargement with which these planets are actually more than just a blue point.
Pluto… Rather less, he’s too small and he gets hardly any sunlight at the back to reflect and is still very dark.
There needs a little more than just a telescopic tube. To photograph, DSOs is the most important first time a precise tracking that your telescope + accessories wears.
Then, of course, you need a camera to allow the corresponding exposure times
Connecting various adapters to the camera with the telescope (comactor, focal reducer, spacer rings, bayonet adapter)
Ideally also an autoguider to be able to correct small errors of tracking (necessary for longer exposure times)
Achja and at the end it needs a PC to stack the raw data and get a finished image.
But can you also be exposed without a follow-up?
The longer your focal length is, the shorter the exposure time must be.
Otherwise, from your star, only strokes will be made.
For comparison:
I exposed the above picture of the western fog with 60s/frame. (For other pictures I also exposed up to 600s, i.e. 10 minutes /frame)
With my telescope I would be limited to 0.2s without tracking.
Even with the ISO attack, there is too little for many DSO… With a shorter focal length and more open glare you can try on Orionnebel or Andromeda galaxy, which also work without tracking.
Do you have to expose uranus and neptune observations? If so, how long? Would it work without any follow-up?
I focus more on the inner planets like venus jupiter mars and saturn. Rest comes after. And then there are still deep sky objects. It’s all so exciting! Although noteworthy is difficult to observe.
If a bit smaller, with 500mm but still very detailed + around the whole constellation Orion are so many fogs that you get several at once with shorter focal lengths.
Orionnebel?
About 500mm focal length gets these objects format-filling on the cam sensor.
The Andromeda galaxy is about as large in the night sky as the moon.
And what magnification for Andromeda galaxie orionnebel?
Depending on the camera and your focal length, you can calculate it, the first video tutorial is also on it.
How long can you be exposed without any follow-up?
20-30 seconds can not be exposed without tracking.
And basically, more is better at the exposure time.
Here is a tutorial for Orion without tracking https://youtu.be/iuMZG-SyDCU
And once with follow-up https://youtu.be/Qb1ceFM-DkQ
So 20-30 sec? If so, do you need a follow-up?
Planets are relatively bright, so you can easily work with very short exposure times … So short that you usually make videos easy.
With planets you can easily work without tracking.
However, star clusters need longer exposure times as well as fog and galaxies.
Thank you. And I have a 203×1000. What does it look like?
is it better?
Do you have to expose planets? And can you photograph star clusters without tracking?
Thank you very much.
the above picture looks btw full of hammer, if I caught such a thing, I would fall out of power before joy and fascination.
Don’t pluto. Anything else.