Recover a tiny BF, it's possible if ?

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Geremia Forino
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Recover a tiny BF, it's possible if ?

Post by Geremia Forino » Fri Aug 21, 2015 3:49 pm

I was curious to know if someone has got to try, a small BF 5mm - 6mm placed directly on the chip of the camera ? i have a BF-600 from Lunt that I would like to use and, a LU075M camera with chip 5,79 mm 4,89 mm, this would be covered entirely by the BF600 which is 6mm and avoid vignetting in the system but.....this will work ?
Last edited by Geremia Forino on Sat Aug 22, 2015 8:14 am, edited 1 time in total.

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marktownley
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Re: Recover a tiny BF, it's possible if..

Post by marktownley » Fri Aug 21, 2015 4:49 pm

Yes, that will work.
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Geremia Forino
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Re: Recover a tiny BF, it's possible if..

Post by Geremia Forino » Fri Aug 21, 2015 5:09 pm

Thanks Mark, as always, always ready to clarify ideas,
now I have to find a way to extract, without damage, the BF from diagonal, I would keep it reversible for use with Lunt35.

if you have any link that would help me, I appreciate it


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Re: Recover a tiny BF, it's possible if..

Post by marktownley » Fri Aug 21, 2015 8:54 pm

take a close up picture of it so we can see what we're working with...
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Geremia Forino
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Re: Recover a tiny BF, it's possible if..

Post by Geremia Forino » Sat Aug 22, 2015 12:25 am

was easier than I thought, this is the BF and the Lumenera LU075M, with bf inserted and ready for testing on the sun. I expect to see some speckle, due to dust, but I will solve this if the test will be positive.
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bf1.jpg
bf.jpg

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Re: Recover a tiny BF, it's possible if ?

Post by DJD » Sat Aug 22, 2015 9:27 am

Interesting idea, hope it works out. How is the BF5 held
in place on the chip? Will Newton's Rings be an issue ?
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Geremia Forino
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Re: Recover a tiny BF, it's possible if ?

Post by Geremia Forino » Sat Aug 22, 2015 9:51 am

do not consider how current is placed BF, is unsafe for the camera chip and has too many distortions in the image, Newton rings included, with a good flat I solved (see image) but I want to make the system more stable, maybe a Barrel that is drawn into the 1.25 adapter down to the camera chip.

picture of LS35 mode and first light from BF-Camera at 3920mm focal
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sistem.jpg
first light.jpg
first light.jpg (119.81 KiB) Viewed 1179 times

Geremia Forino
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Re: Recover a tiny BF, it's possible if ?

Post by Geremia Forino » Sun Aug 23, 2015 7:59 am

Coronado works very accuracy, the BF of Lunt is irregular and this makes a little more difficult to manage it in front of a sensor. A dear friend turner is now working on a barrel in which the BF will be inserted and screwed in the C-Mout thread of 640 pixels camera, at the same time, we are thinking on a system that can make it tilting in order to correct an eventual effect of Newtons rings

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