Re: OT - Any idea about this optical gadget?
GREAT! Exact same thing. Thanks very much to all the Sherlocks on the list. Here are images showing how it is used: https://www.shelyak.com/produit/handheld-spectroscope/?lang=en Now that I have a hand spectroscope myself it is time to find something to scope. Bulent, feeling a lot better. - http://patoloji.gen.tr http://celasun.wordpress.com/ http://www.flickr.com/photos/bc_the_path/ http://photo.net/photodb/user?user_id=2226822 http://www.pentaxphotogallery.com/artists/bulentcelasun Postmaster , 8 Mar 2019 Cum, 17:39 tarihinde şunu yazdı: > > Mark Roberts wrote: > > >>https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 > > > >I have no idea what it is but it's fascinating! If you have no luck on > >the PDML try posting it at https://old.reddit.com/r/whatisthisthing/ > > I posted it myself and within 10 minutes got this reply: > https://www.google.com/search?q=Rayner+hand+Spectroscope=isch=firefox-b-1=1024=611=1=N36CXPxQipGCB7vLp4AJ > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT - Any idea about this optical gadget?
Well done, Sherlock! Alan C On 08-Mar-19 04:39 PM, Postmaster wrote: Mark Roberts wrote: https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 I have no idea what it is but it's fascinating! If you have no luck on the PDML try posting it at https://old.reddit.com/r/whatisthisthing/ I posted it myself and within 10 minutes got this reply: https://www.google.com/search?q=Rayner+hand+Spectroscope=isch=firefox-b-1=1024=611=1=N36CXPxQipGCB7vLp4AJ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT - Any idea about this optical gadget?
Mark Roberts wrote: >>https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 > >I have no idea what it is but it's fascinating! If you have no luck on >the PDML try posting it at https://old.reddit.com/r/whatisthisthing/ I posted it myself and within 10 minutes got this reply: https://www.google.com/search?q=Rayner+hand+Spectroscope=isch=firefox-b-1=1024=611=1=N36CXPxQipGCB7vLp4AJ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT - Any idea about this optical gadget?
They both look full spectrum. The "thickness" of the bands seem to be the same. The only difference is perhaps a slight darkening of the blue end. Fluorescent microscopes supply a rather precise wavelength light for certain studies. The specific wavelength is ensured by filters. I wonder whether a device like this might be used to check the quality of the light source. As they age, they fail to produce the required intensity of certain wavelengths before the others. Bulent - http://patoloji.gen.tr http://celasun.wordpress.com/ http://www.flickr.com/photos/bc_the_path/ http://photo.net/photodb/user?user_id=2226822 http://www.pentaxphotogallery.com/artists/bulentcelasun Toine , 8 Mar 2019 Cum, 12:25 tarihinde şunu yazdı: > > Maybe a spectrophotometer. If you point it up towards a blue sky maybe the > rainbow isnt full spectrum and the second one is full spectrum? > > On Thu, 7 Mar 2019, 19:55 Bulent Celasun, wrote: > > > I've found this tubular thing (9 - 22 cm in length, about 2 cm in > > diameter) in a thrift store. > > > > There is a single lens in each end. > > > > It has moveable parts like a mirror that rotates 360 degrees around > > the tube. During part of this travel it faces an oval hole on tube's > > wall where one can see a tiny prism inside which can intersect the > > tubular axis by moving a lever from outside. > > > > Directing the gadget toward a light source and looking at from the > > less populated end of the "tube" I see a typical rainbow. (Light > > travelling from one end to the other crossing the prism inside). > > > > Moving the lever properly while light reflecting from the mirror > > enters inside (and is reflected to cross the prism) makes two adjacent > > rainbows visible at the far end of the tube. > > > > Oh well! I am not sure if I was able to describe it... > > > > Anyway, I ask just out of curiosty. > > Has anyone ever seen something like this? > > > > https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 > > > > Bulent > > - > > http://patoloji.gen.tr > > http://celasun.wordpress.com/ > > http://www.flickr.com/photos/bc_the_path/ > > http://photo.net/photodb/user?user_id=2226822 > > http://www.pentaxphotogallery.com/artists/bulentcelasun > > > > -- > > PDML Pentax-Discuss Mail List > > PDML@pdml.net > > http://pdml.net/mailman/listinfo/pdml_pdml.net > > to UNSUBSCRIBE from the PDML, please visit the link directly above and > > follow the directions. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT - Any idea about this optical gadget?
>... spectroscope Highly likely. Can be part of a laboratory equipment. Strangely (for me) both ends of the tube seems to be made for eye-viewing. Perhaps this was used just part of a quality control /inspection process, rather than for measurements. Bulent - http://patoloji.gen.tr http://celasun.wordpress.com/ http://www.flickr.com/photos/bc_the_path/ http://photo.net/photodb/user?user_id=2226822 http://www.pentaxphotogallery.com/artists/bulentcelasun David Mann , 8 Mar 2019 Cum, 12:19 tarihinde şunu yazdı: > > I'm wondering if it's some sort of spectroscope. > > Cheers, > Dave > > > On Mar 8, 2019, at 7:01 PM, Bulent Celasun wrote: > > > > MArk, Matthew, > > > > Thank you both for your interest and help. > > I am pleased you also found this gadget intriguing. > > > > First, I must correct a typo for future generations who will look into > > this case: > >> I've found this tubular thing (9 - 22 cm in length, > > It is 9-11 cm in length. > > > > Matthew, your suggestion looks very promising I should say. > > The gadget is conceptually similar. It is just smaller. > > Also the ends of the tube seems to be designed for human eyes > > (consideration of viewing point). > > The image is just a band of rainbow. > > It may well be an "off axis guider" for another system. > > Perhaps, a microscope! > > I will look into this and if I find anything to satisfy our curiosity, > > I'll share it. > > > > Thanks again, > > > > Bulent > > > > - > > http://patoloji.gen.tr > > http://celasun.wordpress.com/ > > http://www.flickr.com/photos/bc_the_path/ > > http://photo.net/photodb/user?user_id=2226822 > > http://www.pentaxphotogallery.com/artists/bulentcelasun > > > > Matthew Hunt , 7 Mar 2019 Per, 23:30 tarihinde şunu yazdı: > >> > >> The tiny prism makes me think of an off-axis guider for a telescope (the > >> prism functions as a mirror, diverting some of the light near the edge of > >> the field-of-view to an eyepiece or guide camera, while most of the light > >> goes to the main camera). > >> > >> See: > >> http://www.atscope.com.au/astrophoto.html > >> Specifically, the section "Photographing Galaxies, Nebulae, Globular > >> Clusters etc." > >> > >> On Thu, Mar 7, 2019 at 1:55 PM Bulent Celasun > >> wrote: > >> > >>> I've found this tubular thing (9 - 22 cm in length, about 2 cm in > >>> diameter) in a thrift store. > >>> > >>> There is a single lens in each end. > >>> > >>> It has moveable parts like a mirror that rotates 360 degrees around > >>> the tube. During part of this travel it faces an oval hole on tube's > >>> wall where one can see a tiny prism inside which can intersect the > >>> tubular axis by moving a lever from outside. > >>> > >>> Directing the gadget toward a light source and looking at from the > >>> less populated end of the "tube" I see a typical rainbow. (Light > >>> travelling from one end to the other crossing the prism inside). > >>> > >>> Moving the lever properly while light reflecting from the mirror > >>> enters inside (and is reflected to cross the prism) makes two adjacent > >>> rainbows visible at the far end of the tube. > >>> > >>> Oh well! I am not sure if I was able to describe it... > >>> > >>> Anyway, I ask just out of curiosty. > >>> Has anyone ever seen something like this? > >>> > >>> https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 > >>> > >>> Bulent > >>> - > >>> http://patoloji.gen.tr > >>> http://celasun.wordpress.com/ > >>> http://www.flickr.com/photos/bc_the_path/ > >>> http://photo.net/photodb/user?user_id=2226822 > >>> http://www.pentaxphotogallery.com/artists/bulentcelasun > >>> > >>> -- > >>> PDML Pentax-Discuss Mail List > >>> PDML@pdml.net > >>> http://pdml.net/mailman/listinfo/pdml_pdml.net > >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and > >>> follow the directions. > >>> > >> -- > >> PDML Pentax-Discuss Mail List > >> PDML@pdml.net > >> http://pdml.net/mailman/listinfo/pdml_pdml.net > >> to UNSUBSCRIBE from the PDML, please visit the link directly above and > >> follow the directions. > > > > -- > > PDML Pentax-Discuss Mail List > > PDML@pdml.net > > http://pdml.net/mailman/listinfo/pdml_pdml.net > > to UNSUBSCRIBE from the PDML, please visit the link directly above and > > follow the directions. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT - Any idea about this optical gadget?
Maybe a spectrophotometer. If you point it up towards a blue sky maybe the rainbow isnt full spectrum and the second one is full spectrum? On Thu, 7 Mar 2019, 19:55 Bulent Celasun, wrote: > I've found this tubular thing (9 - 22 cm in length, about 2 cm in > diameter) in a thrift store. > > There is a single lens in each end. > > It has moveable parts like a mirror that rotates 360 degrees around > the tube. During part of this travel it faces an oval hole on tube's > wall where one can see a tiny prism inside which can intersect the > tubular axis by moving a lever from outside. > > Directing the gadget toward a light source and looking at from the > less populated end of the "tube" I see a typical rainbow. (Light > travelling from one end to the other crossing the prism inside). > > Moving the lever properly while light reflecting from the mirror > enters inside (and is reflected to cross the prism) makes two adjacent > rainbows visible at the far end of the tube. > > Oh well! I am not sure if I was able to describe it... > > Anyway, I ask just out of curiosty. > Has anyone ever seen something like this? > > https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 > > Bulent > - > http://patoloji.gen.tr > http://celasun.wordpress.com/ > http://www.flickr.com/photos/bc_the_path/ > http://photo.net/photodb/user?user_id=2226822 > http://www.pentaxphotogallery.com/artists/bulentcelasun > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT - Any idea about this optical gadget?
I'm wondering if it's some sort of spectroscope. Cheers, Dave > On Mar 8, 2019, at 7:01 PM, Bulent Celasun wrote: > > MArk, Matthew, > > Thank you both for your interest and help. > I am pleased you also found this gadget intriguing. > > First, I must correct a typo for future generations who will look into > this case: >> I've found this tubular thing (9 - 22 cm in length, > It is 9-11 cm in length. > > Matthew, your suggestion looks very promising I should say. > The gadget is conceptually similar. It is just smaller. > Also the ends of the tube seems to be designed for human eyes > (consideration of viewing point). > The image is just a band of rainbow. > It may well be an "off axis guider" for another system. > Perhaps, a microscope! > I will look into this and if I find anything to satisfy our curiosity, > I'll share it. > > Thanks again, > > Bulent > > - > http://patoloji.gen.tr > http://celasun.wordpress.com/ > http://www.flickr.com/photos/bc_the_path/ > http://photo.net/photodb/user?user_id=2226822 > http://www.pentaxphotogallery.com/artists/bulentcelasun > > Matthew Hunt , 7 Mar 2019 Per, 23:30 tarihinde şunu yazdı: >> >> The tiny prism makes me think of an off-axis guider for a telescope (the >> prism functions as a mirror, diverting some of the light near the edge of >> the field-of-view to an eyepiece or guide camera, while most of the light >> goes to the main camera). >> >> See: >> http://www.atscope.com.au/astrophoto.html >> Specifically, the section "Photographing Galaxies, Nebulae, Globular >> Clusters etc." >> >> On Thu, Mar 7, 2019 at 1:55 PM Bulent Celasun >> wrote: >> >>> I've found this tubular thing (9 - 22 cm in length, about 2 cm in >>> diameter) in a thrift store. >>> >>> There is a single lens in each end. >>> >>> It has moveable parts like a mirror that rotates 360 degrees around >>> the tube. During part of this travel it faces an oval hole on tube's >>> wall where one can see a tiny prism inside which can intersect the >>> tubular axis by moving a lever from outside. >>> >>> Directing the gadget toward a light source and looking at from the >>> less populated end of the "tube" I see a typical rainbow. (Light >>> travelling from one end to the other crossing the prism inside). >>> >>> Moving the lever properly while light reflecting from the mirror >>> enters inside (and is reflected to cross the prism) makes two adjacent >>> rainbows visible at the far end of the tube. >>> >>> Oh well! I am not sure if I was able to describe it... >>> >>> Anyway, I ask just out of curiosty. >>> Has anyone ever seen something like this? >>> >>> https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 >>> >>> Bulent >>> - >>> http://patoloji.gen.tr >>> http://celasun.wordpress.com/ >>> http://www.flickr.com/photos/bc_the_path/ >>> http://photo.net/photodb/user?user_id=2226822 >>> http://www.pentaxphotogallery.com/artists/bulentcelasun >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> PDML@pdml.net >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> to UNSUBSCRIBE from the PDML, please visit the link directly above and >>> follow the directions. >>> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT - Any idea about this optical gadget?
MArk, Matthew, Thank you both for your interest and help. I am pleased you also found this gadget intriguing. First, I must correct a typo for future generations who will look into this case: >I've found this tubular thing (9 - 22 cm in length, It is 9-11 cm in length. Matthew, your suggestion looks very promising I should say. The gadget is conceptually similar. It is just smaller. Also the ends of the tube seems to be designed for human eyes (consideration of viewing point). The image is just a band of rainbow. It may well be an "off axis guider" for another system. Perhaps, a microscope! I will look into this and if I find anything to satisfy our curiosity, I'll share it. Thanks again, Bulent - http://patoloji.gen.tr http://celasun.wordpress.com/ http://www.flickr.com/photos/bc_the_path/ http://photo.net/photodb/user?user_id=2226822 http://www.pentaxphotogallery.com/artists/bulentcelasun Matthew Hunt , 7 Mar 2019 Per, 23:30 tarihinde şunu yazdı: > > The tiny prism makes me think of an off-axis guider for a telescope (the > prism functions as a mirror, diverting some of the light near the edge of > the field-of-view to an eyepiece or guide camera, while most of the light > goes to the main camera). > > See: > http://www.atscope.com.au/astrophoto.html > Specifically, the section "Photographing Galaxies, Nebulae, Globular > Clusters etc." > > On Thu, Mar 7, 2019 at 1:55 PM Bulent Celasun > wrote: > > > I've found this tubular thing (9 - 22 cm in length, about 2 cm in > > diameter) in a thrift store. > > > > There is a single lens in each end. > > > > It has moveable parts like a mirror that rotates 360 degrees around > > the tube. During part of this travel it faces an oval hole on tube's > > wall where one can see a tiny prism inside which can intersect the > > tubular axis by moving a lever from outside. > > > > Directing the gadget toward a light source and looking at from the > > less populated end of the "tube" I see a typical rainbow. (Light > > travelling from one end to the other crossing the prism inside). > > > > Moving the lever properly while light reflecting from the mirror > > enters inside (and is reflected to cross the prism) makes two adjacent > > rainbows visible at the far end of the tube. > > > > Oh well! I am not sure if I was able to describe it... > > > > Anyway, I ask just out of curiosty. > > Has anyone ever seen something like this? > > > > https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 > > > > Bulent > > - > > http://patoloji.gen.tr > > http://celasun.wordpress.com/ > > http://www.flickr.com/photos/bc_the_path/ > > http://photo.net/photodb/user?user_id=2226822 > > http://www.pentaxphotogallery.com/artists/bulentcelasun > > > > -- > > PDML Pentax-Discuss Mail List > > PDML@pdml.net > > http://pdml.net/mailman/listinfo/pdml_pdml.net > > to UNSUBSCRIBE from the PDML, please visit the link directly above and > > follow the directions. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT - Any idea about this optical gadget?
The tiny prism makes me think of an off-axis guider for a telescope (the prism functions as a mirror, diverting some of the light near the edge of the field-of-view to an eyepiece or guide camera, while most of the light goes to the main camera). See: http://www.atscope.com.au/astrophoto.html Specifically, the section "Photographing Galaxies, Nebulae, Globular Clusters etc." On Thu, Mar 7, 2019 at 1:55 PM Bulent Celasun wrote: > I've found this tubular thing (9 - 22 cm in length, about 2 cm in > diameter) in a thrift store. > > There is a single lens in each end. > > It has moveable parts like a mirror that rotates 360 degrees around > the tube. During part of this travel it faces an oval hole on tube's > wall where one can see a tiny prism inside which can intersect the > tubular axis by moving a lever from outside. > > Directing the gadget toward a light source and looking at from the > less populated end of the "tube" I see a typical rainbow. (Light > travelling from one end to the other crossing the prism inside). > > Moving the lever properly while light reflecting from the mirror > enters inside (and is reflected to cross the prism) makes two adjacent > rainbows visible at the far end of the tube. > > Oh well! I am not sure if I was able to describe it... > > Anyway, I ask just out of curiosty. > Has anyone ever seen something like this? > > https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 > > Bulent > - > http://patoloji.gen.tr > http://celasun.wordpress.com/ > http://www.flickr.com/photos/bc_the_path/ > http://photo.net/photodb/user?user_id=2226822 > http://www.pentaxphotogallery.com/artists/bulentcelasun > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT - Any idea about this optical gadget?
Bulent Celasun wrote: >I've found this tubular thing (9 - 22 cm in length, about 2 cm in >diameter) in a thrift store. > >There is a single lens in each end. > >It has moveable parts like a mirror that rotates 360 degrees around >the tube. During part of this travel it faces an oval hole on tube's >wall where one can see a tiny prism inside which can intersect the >tubular axis by moving a lever from outside. > >Directing the gadget toward a light source and looking at from the >less populated end of the "tube" I see a typical rainbow. (Light >travelling from one end to the other crossing the prism inside). > >Moving the lever properly while light reflecting from the mirror >enters inside (and is reflected to cross the prism) makes two adjacent >rainbows visible at the far end of the tube. > >Oh well! I am not sure if I was able to describe it... > >Anyway, I ask just out of curiosty. >Has anyone ever seen something like this? > >https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 I have no idea what it is but it's fascinating! If you have no luck on the PDML try posting it at https://old.reddit.com/r/whatisthisthing/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
OT - Any idea about this optical gadget?
I've found this tubular thing (9 - 22 cm in length, about 2 cm in diameter) in a thrift store. There is a single lens in each end. It has moveable parts like a mirror that rotates 360 degrees around the tube. During part of this travel it faces an oval hole on tube's wall where one can see a tiny prism inside which can intersect the tubular axis by moving a lever from outside. Directing the gadget toward a light source and looking at from the less populated end of the "tube" I see a typical rainbow. (Light travelling from one end to the other crossing the prism inside). Moving the lever properly while light reflecting from the mirror enters inside (and is reflected to cross the prism) makes two adjacent rainbows visible at the far end of the tube. Oh well! I am not sure if I was able to describe it... Anyway, I ask just out of curiosty. Has anyone ever seen something like this? https://www.flickr.com/photos/bc_the_path/sets/72157707409395914 Bulent - http://patoloji.gen.tr http://celasun.wordpress.com/ http://www.flickr.com/photos/bc_the_path/ http://photo.net/photodb/user?user_id=2226822 http://www.pentaxphotogallery.com/artists/bulentcelasun -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
