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Da Moon!

moon telescope astro photo

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#1 PeterPP

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Posted 18 June 2016 - 12:11 AM

All this talk lately of telescopes I thought I dust off my old newt

Here's a couple of shots from tonight, both are the full uncropped image from the 7d-mkii.

 

 Image 1: 7d-mkii at prime focus of a 200mm f/5 (1000mm f/l) Newtonian (about 20x compared to a 50mm lens),  rough polar align and motorized GEM mount 

ISO100 1/500 

Telescope effectively becomes a 1000mm f/5 lens

 

 

 Image 2: 7d-mkii with eyepiece projection using a 10mm Super Plössl eyepiece on a 200mm f/5 (1000mm f/l) Newtonian (about 100x compared to a 50mm lens),  rough polar align and motorized GEM mount, note the image is slightly blurred, the EQ5 GEM mount could not hold the OTA steady enough.

ISO 1600 1/320 (eyepiece projection gobbles up light)

With the 10mm eyepiece projection the telescope effectively becomes a rather very dim and very shaky 5000mm lens

 

I'll attach a pic of the setup tomorrow when there is some light to take its pic.  :P

The combo of gem mount, counter weights and OTA weigh in around the 100 pound mark, not easy to cart around.

Attached Files


Peter
 


#2 Roderick

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Posted 18 June 2016 - 07:11 AM

Massive John !  I mean Peter.

Great explanation as to why its so difficult to get sharp high magnification shots of the mooo-in (as we pronounce it ;))



#3 PeterPP

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Posted 18 June 2016 - 08:02 AM

Yes at high magnification the focal length gets really long, and the effective f/stop gets very small, annoying combination when you want to freeze things.

 

Actually maybe trying to use the Sony nex instead of a heavy DSLR might improve the mounts ability to hold things still a bit.

But I don't have a Sony E-mount to T-mount adapter (yet).


Peter
 


#4 John W

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Posted 18 June 2016 - 09:32 AM

Cool shots. Very interesting, thanks for sharing.



#5 Roderick

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Posted 18 June 2016 - 10:15 AM

Sorry Peter, I misnamed you! :unsure:



#6 geedee

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Posted 18 June 2016 - 01:59 PM

Good try on a difficult subject Peter. Sure beats any pic I have tried of the Moon..



#7 mjrmillard69

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Posted 18 June 2016 - 06:34 PM

Yep...makes me want a telescope even more lol.

 

Michael



#8 David Pavlich

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Posted 18 June 2016 - 09:30 PM

That's some nice work!!

 

David


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#9 PeterPP

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Posted 18 June 2016 - 11:36 PM

Oup's,  :P

 But I don't have a Sony E-mount to T-mount adapter (Ordered one has not arrived yet).

 

Wife had me moving furniture all day, and when she asked me to order a set of Harry Potter books from Amazon

as a gift I could not resist adding a little something to the order.   :)

 

Failed miserably at today's attempt to get the full moon against a blue sky background.

Sky went and filled with clouds for the evening.


:) NP, different,  I often get called Paul by mistake, at least so far no one has tried Mary.  :lol:

 

Sorry Peter, I misnamed you! :unsure:


Peter
 


#10 Roderick

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Posted 19 June 2016 - 08:32 AM

Swish ! :D

Top musical reference there B)






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