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Anyone have a spectroscope?

  • michaeloconnell
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16 years 8 months ago #66669 by michaeloconnell
Replied by michaeloconnell on topic Re: Anyone have a spectroscope?
Ah...

The lens is a 40mm f/10 lens in a plastic cell and so the whole thing would be quite thick/long - about 50mm approx.

The 140mm filter is also set in a plastic cell with total diameter of 160mm approx. I could remove the plastic from that one though, but that one isn't as critical as the 40mm one I was hoping to do.

ah well...

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16 years 8 months ago #66670 by dave_lillis
Replied by dave_lillis on topic Re: Anyone have a spectroscope?
John,
You could run your own little industry testing filters, you'll be getting brown envelopes from manufacturers persuading you to pass their filters. :lol:
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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16 years 8 months ago #66671 by johnomahony
Replied by johnomahony on topic Re: Anyone have a spectroscope?

Ah...

The lens is a 40mm f/10 lens in a plastic cell and so the whole thing would be quite thick/long - about 50mm approx.

The 140mm filter is also set in a plastic cell with total diameter of 160mm approx. I could remove the plastic from that one though, but that one isn't as critical as the 40mm one I was hoping to do.

ah well...


Might get away with it but the lens may distort the throughput signal. Any chance of posting a picture of the assembly?
The Lord giveth, the Revenue taketh away. (John 1:16)

www.flickr.com/photos/7703127@N07/

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16 years 8 months ago #66672 by johnomahony
Replied by johnomahony on topic Re: Anyone have a spectroscope?

John,
you'll be getting brown envelopes from manufacturers persuading you to pass their filters. :lol:


I'm not swallowing one of those 2" filters ........... :twisted:
:wink:
The Lord giveth, the Revenue taketh away. (John 1:16)

www.flickr.com/photos/7703127@N07/

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