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Digiscoping with Fujinon 40x150ED

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#1 Andresin150

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Posted 22 April 2011 - 03:45 PM

It’s been some time since I got the opportunity to do some daytime observing with the big Fujis. Now we are in Holidays, so I decided to try again and post my impressions of its optics.
I’ve been interested in some sort of imaging system and looked first for the Pecten Eye cam, made specifically for this binos, but after some emails, I found that its cost is higher than a Fluorite Kowa, so I dropped the idea immediately. First I tried to attach a High resolution (2mpx) web cam, but it didn´t work well (and resulted in a waste of money).
On Wednesday I found a camera shop that had a Celestron camera adapter for up to 2” eps, and curiosity got me and went for it. Now I needed a small digital camera. Two blocks from there I found a nice Sony, and it turned out to be 14.1 mpx, full HD, panoramic photos, very nice!, etc…. many times better than the Pecten specs, and many times cheaper.
I had to do an “elevator” for the adapter; the camera lens was still too low at its highest position. Night shots have been impossible due to very bad weather (my future target is Saturn), but today’s morning allowed me some clearer day shots of the small town “La Calera”, 6km from my house (Google Earth). Cold weather resulted positive since it almost eliminated heat waves from the images.
The objective of this post is to share with all of you the setup, and the excellent color correction of this binoculars and its sharp image to the edge, so I took the photographs without any zoom, to capture the edge. I found, with a more rigorous observation, that purple fringing as in an achromatic system is seen due to misplacing of the eyes, which is easier due to the medium sized exit pupil (3.75mm). Centering eyes completely steady is not easy, but with the very steady camera/adapter setup you can see that color on dark objects against a white sky does not appear evident.
Please imagine these images as seen through a 68 deg AFOV. Not as good as the original pictures due resizing, but they show the point.
It was fun to watch in my TV real time video of town people and cars activity!

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#2 Andresin150

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Posted 22 April 2011 - 03:54 PM

with TV connection...

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#3 Andresin150

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Posted 22 April 2011 - 03:56 PM

la Calera Town 6km away...

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#4 Andresin150

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Posted 22 April 2011 - 03:58 PM

la Calera Town 6km away (2)

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#5 Andresin150

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Posted 22 April 2011 - 04:01 PM

and a small wooden electric post 170m (aprox) away...

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#6 Andresin150

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Posted 22 April 2011 - 04:07 PM

all the images where taken behind a 10mm laminated glass, sorry, too cold outside :)

#7 Mark9473

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Posted 22 April 2011 - 04:10 PM

Great shots, great set-up!

At this point I'd like to ask you to go and dig into the archived section of the Cloudy Days forum, and find the epic thread about what it takes to read a car's license plate 5 miles way.

Then show us how close you get :grin:

#8 Andresin150

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Posted 22 April 2011 - 04:32 PM

Well, at 40x and 6km I was very far from reading a car plate. I tried zooming in but the image degraded too much so it didn't work either.
I think it can be done by zooming in a very good/clear/focused High res image, but in real time I don't know.

#9 KennyJ

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Posted 22 April 2011 - 04:35 PM

Andre ,

Thanks for the most enjoyable series of posts in a thread that I've seen here in a long time !

The shots remind me of several I posted over on the Cloudy Days forum about two years ago .

I just use a relatively simple / humble point and shoot Panasonic Lumix camera through my TeleVue 76 with TeleVue 32mm Plossl eyepiece , or occasionally with 18mm TeleVue Radian , which at least offers a wider A.F.O.V of around 60 degrees compared with the T.V Plossl .

Kenny

#10 Andresin150

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Posted 22 April 2011 - 05:12 PM

thanks for your kind comments Kenny!
I never searched cloudy days, what an interesting place!
I posted a "panorama picture" I took earlier, this cheap new camera is awesome!

#11 brentwood

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Posted 22 April 2011 - 07:56 PM

Great shots Andre. I thought how great it must be to have such a great instrument, and then I saw that you had another one just there on the floor! :)
I was intrigued by your statement that it was "too cold to go outside". I see though that La Calera is quite high up in the mountains, but that your forecast is high 18C, low 8C, which is pretty warm. When our temperature gets UP to 8C, we normally switch from long sleeve shirts to short sleeves!

#12 Andresin150

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Posted 22 April 2011 - 08:41 PM

I guess that since I dont have below zero winters, i've became not tolerant to very cold climates. ;) the truth is today was windy and rainy too, and that makes the cold feel colder (and didnt want to change my pjs) In my country, not even the coldest places are as cold as winter in the States

#13 ronharper

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Posted 22 April 2011 - 11:26 PM

Andre,
Thanks for this sample of what the big Fujinon can do. The telephone pole shot is impressively free from color fringing, even more so considering the magnification. Now, please tell us the poles were really that curved, and we're not just seeing excessive pincushion!
Ron

#14 daniel_h

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Posted 23 April 2011 - 03:20 AM

Good work andrea, the bird shots need to come next..

#15 Andresin150

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Posted 23 April 2011 - 04:28 AM

Hi Ron, yes, the poles where that curved! What surprised me the most was the incredible sharpness to the edge. I'll do the same test with the 25x mt's later.

#16 Andresin150

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Posted 23 April 2011 - 11:06 AM

For scale comparison, I took a similar image (la Calera Town 6km away (2)) but at 25x with the Mt's. Note sharpness almost to the edge.

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#17 Andresin150

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Posted 23 April 2011 - 11:15 AM

for comparison purposes: Note, as expected, the 25x is a bit brighter than the 40x image

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#18 Vondragonnoggin

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Posted 23 April 2011 - 11:22 AM

That's a great comparison pic for magnification. Quite a significant jump. I did notice the edge differences in the two pics out of the 40x - looks like the first pic is more representative of actual edge correction, while the second pic appears to have maybe been a slight off axis positioning maybe (the slightly hazy appearance)? Talking about the 40x only here.

#19 Andresin150

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Posted 23 April 2011 - 11:32 AM

Vond, you are right. Setting up the camera is not easy because the camera focus and tries to correct the image by itself, so my main indicator was just to see most of the edge as a not defocused line. Setting up the 25x is easier due the bigger exit pupil; more positioning space. Also, for the camera, the image changes automatically from landscape to macro when it detects the proximity of the glass of the EP. Finally, resolution is hard to notice in a 2.5" screen :)

#20 ronharper

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Posted 23 April 2011 - 11:00 PM

Andre,
I am not surprised that the Fujinons are this good. I own the mighty 6x30 FMTR-SX, almost as rare as the 40x ED. I am still willing to swap, any time. You don't know what you're missing.

Your windows are awesome, too. Why go outside?
Ron

#21 Andresin150

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Posted 24 April 2011 - 08:54 AM

Ron, considering similar excellent optics, it sure would be nice having those 8.5 deg FOV instead of my lousy 1.7deg! :)
besides, mine didn't came with a neck strap :roflmao:

#22 RHoward42

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Posted 24 April 2011 - 04:18 PM

And to think, i was really happy with my Fuji 10x50 mounted on my Bogen tripod with 128 head.
Rick

#23 Andresin150

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Posted 24 April 2011 - 08:10 PM

I took some pics two hours ago. The first, a very steep and rugged mountain at the left, I´m not totally sure, Google Earth is not very complete here, but I think it is 22km away.

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#24 Andresin150

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Posted 24 April 2011 - 08:16 PM

the 3d effect was amazing, unfortunately the images took that away.....
This next pic is a zoomed in photo (using the 4x optical camera zoom) of the same mountain. It actually looked like that trough the binoculars, if you imagine the first photo as in a 68 deg AFOV

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#25 Andresin150

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Posted 24 April 2011 - 08:20 PM

Finally a photo of an energy tower just 200 meters from my terrace. I like the sharpness of this one a lot, but resizing doesn't make justice to it!. All this images were taken outside, no window in the middle :)

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