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Orion Nebula

O

olyinaz

Guest
Captured with the G1 on a Celestron 11" telescope using a Hyperstar lens (which turns the telescope into a 560mm f/2 optic mathematically but it's stopped down a bit by the central obstruction, namely the camera, up front). 25sec exposure at 100iso.





Cheers,
Oly
 

Brian Mosley

New member
Wow, incredible to think this was taken from the surface of the earth! don't you suffer from light polution? and with longer exposures, how do you remove the effects of movement of the earth?

Really fascinating stuff, but I feel that I'd have to move way into the country to escape the light polution here.

Thanks for sharing

Brian
 

GDI

Member
Captured with the G1 on a Celestron 11" telescope using a Hyperstar lens (which turns the telescope into a 560mm f/2 optic mathematically but it's stopped down a bit by the central obstruction, namely the camera, up front). 25sec exposure at 100iso.





Cheers,
Oly
That is very impressive for a single 25 second exposure, low noise. And good tracking - which mount is it?

Now you just need to remove the G1's IR filter to capture the H-alpha,!
 
O

olyinaz

Guest
Thanks guys!

Brian: I use a telescope mount that rotates with the Earth thus removing that item from issue. Even so I struggle with more than 30 sec. exposures because my mount isn't accurate enough to prevent the stars starting to elongate into ovals (which looks terrible - this is called mount error and correcting for it requires more gear that I've yet to buy). And Brian, don't despair due to your location - I've seen absolutely stunning Hyperstar images right out of Manhattan NYC that were taken with the use of filters that block the wavelengths of light noise pollution. Remember, it doesn't matter what you can see, it only matters what the chip can see through the filters with 30 sec. or more of exposure!

GDI: You said it bro! I think that the G1 is an absolute natural for modifying for astro imaging. I really hope that someone offers that service on this camera because if they do I'll likely have it done and then replace this G1 with a G1HD or perhaps whatever Olympus comes out with.

Thanks again all. I'll post more as I'm able (I caught Bodes and the Cigar last night as well) but I've got to run and the processing is just horribly time consuming on these dang things.

Best,
Oly
 

Jack

Sr. Administrator
Staff member
Oly,

I am in awe... Seriously, these are among the very best astral captures I have ever seen.
 

wolverine

New member
Great shots. Andromeda too. I have a 9.25 inch scope I need to try this on. Encouraging to see what is possible. Frank
 

mazor

New member
Wow with a 25 second exposure, and the stars have not shifted, is the telescope on some sort of calibrated motor?

Mazor
 
O

olyinaz

Guest
Mazor: Yes, I have the telescope on an equatorial mount such that it rotates with the earth which keeps the stars from shifting. This is actually pretty easy to accomplish with what's known as a "clock drive" for the mount.

Best,
Oly
 
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